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National Center for Atmospheric Research
National Center for Atmospheric Research
National Center for Atmospheric Research
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The US National Center for Atmospheric Research (NCAR /ˈɛnkɑːr/)[3] is a US federally funded research and development center (FFRDC) managed by the nonprofit University Corporation for Atmospheric Research (UCAR) and funded by the National Science Foundation (NSF).[4] NCAR has multiple facilities, including the I. M. Pei-designed Mesa Laboratory headquarters in Boulder, Colorado. Studies include meteorology, climate science, atmospheric chemistry, solar-terrestrial interactions, environmental and societal impacts.

Key Information

Tools and technologies

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NSF/NCAR Gulfstream V research aircraft.

NCAR was instrumental in developing lidar, light radar, now a key archaeological tool, as well as providing a broad array of tools and technologies to the scientific community for studying Earth's atmosphere, including,[5][6]

Staffing areas and notable past and present scientists

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The center is staffed by scientists, engineers, technicians, and support personnel.[4] Key research areas include:[8]

  • Climate (Earth's past, present, and future climate; the greenhouse effect, global warming, and climate change; El Niño, La Niña, and other large-scale atmospheric patterns; drought, wildfires)
  • Meteorology/Weather (short-term forecasts; weather forecasting and predictability; weather's effect on climate; hurricanes, tornadoes, and other severe storms; physical processes)
  • Environmental and societal impacts (impacts of climate change on the natural and managed environment; interactions of weather, climate, and society; weather hazard systems for aviation and ground transportation; national security)
  • Pollution and air chemistry (air pollution on local, regional, and global scales; air chemistry and climate; chemical evolution and transport in the atmosphere)
  • The Sun and space weather (the structure of the Sun, from its interior to sunspots to the solar corona; the solar cycle; the Sun's effect on Earth's weather and climate; space weather)
  • Other components of the Earth system (the effects on weather and climate of interactions with: the oceans and other components of Earth's water cycle, including sea ice, glaciers, and the rest of the cryosphere; forests, agriculture, urbanization and other types of land use)

Notable scientists on the current staff at the center include Tom Wigley, Kevin Trenberth, Clara Deser, and Caspar Ammann,[9][better source needed] and in past have included Paul Crutzen (Nobel Prize in chemistry, 1995); Paul Julian, who with colleague Roland Madden discovered the Madden–Julian oscillation; Stephen Schneider. Greg Holland initiated the multiscale modeling project "Predicting the Earth System Across Scales".[10]

Organization of research—laboratories and programs

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NCAR is currently organized into seven laboratories and two programs:[11]

Laboratories

  • Atmospheric Chemistry Observations and Modeling laboratory (ACOM)
  • Climate and Global Dynamics laboratory (CGD)
  • Computational & Information Systems Laboratory (CISL)—CISL was formerly known as the Scientific Computing Division (SCD). CISL manages and operates NCAR's supercomputers, mass storage system, networking, and other computing and cyberinfrastructure services. The Institute for Mathematics Applied to Geosciences (IMAGe) is a research division within CISL.[11]
  • Earth Observing Laboratory (EOL)—EOL was formerly known as the Atmospheric Technology Division (ATD). EOL manages and operates NCAR's lower atmosphere observing systems, including ground-based instrumentation and two research aircraft, on behalf of the NSF.
  • High Altitude Observatory (HAO)—The oldest part of NCAR, HAO is NCAR's solar-terrestrial physics laboratory. Research foci are the Sun and the Earth's upper atmosphere. HAO operates the Mauna Loa Solar Observatory (MLSO).
  • Mesoscale and Microscale Meteorology laboratory (MMM)
  • Research Applications Laboratory (RAL)

Programs

  • Advanced Study Program (ASP)
  • Integrated Science Program (ISP)

NCAR's service to the universities and larger geosciences community is reinforced by the offerings of UCAR's community programs.[12][13]

Funding and management

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NCAR is managed by the nonprofit UCAR and is one of the NSF's Federally Funded Research and Development Centers, with approximately 95% of its funding coming from the federal government. However, it is not a federal agency and its employees are not part of the federal personnel system.[3] NCAR employs about 761 staff. Its annual expenditures in fiscal year 2015 were $167.8 million.[3][14]

NCAR directors

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The founding director of NCAR was Walter Orr Roberts.[15] The current director is Everette Joseph.[16][4]

NCAR Director Dates in office
Walter Orr Roberts 1960–1968
John W. Firor 1968–1974
Francis P. Bretherton 1974–1980
Wilmot N. Hess 1980–1986
Richard A. Anthes 1986–1988
Robert Serafin 1989–2000
Timothy L. Killeen 2000–2008
Eric J. Barron 2008–2010
Roger M. Wakimoto 2010–2013
Maura Hagan 2013 (interim director)
James W. Hurrell 2013–2018
Everette Joseph 2019–present

Visiting

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Scientific visitors

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NCAR has many opportunities for scientific visits to the facilities for workshops, colloquia, and collaboration by colleagues in academia, government labs, and the private sector.[17] Many NCAR staff also visit colleagues at universities and labs and serve as adjunct or visiting faculty.[13][17]

Public tours

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The Visitor Center at the Mesa Laboratory is open to the public daily at no charge. Guided tours and self-guided tablet tours include video and audio on one of the first supercomputers built by Seymour Cray as well as NCAR's modern supercomputer fleet, many hands-on educational exhibits demonstrating weather phenomena and the changes in Earth's climate brought on by global warming, and a scenic outdoor weather trail.[citation needed]

References

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Revisions and contributorsEdit on WikipediaRead on Wikipedia

National Center for Atmospheric Research

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The National Center for Atmospheric Research (NCAR) is a federally funded research and development center sponsored by the U.S. (NSF) and managed by the nonprofit (UCAR), a of over 120 universities dedicated to advancing understanding of Earth's atmosphere and related systems. Headquartered in , NCAR operates as a hub for collaborative research, providing specialized resources that exceed the capabilities of individual academic institutions. Established in 1960 following recommendations from a 1956 committee that identified gaps in U.S. atmospheric research infrastructure, NCAR began operations to foster in and expand university involvement in the field. Its evolution reflects post-World War II growth in atmospheric sciences, driven by wartime advances like jet stream discoveries and military forecasting needs, transitioning into a broader focus on encompassing prediction, climate dynamics, , and solar-terrestrial interactions. NCAR supports pioneering work through facilities including high-performance supercomputers for modeling complex phenomena, aircraft for in-situ observations, and vast datasets for , contributing to advancements such as improved global simulations and subseasonal techniques. While NCAR's models have enabled significant insights into atmospheric processes, some projections have exhibited biases toward excessive warming, prompting ongoing refinements to enhance empirical alignment. Recent fiscal pressures, including proposed NSF budget reductions of nearly 40% for FY2026, underscore challenges in sustaining operations amid evolving federal priorities.

History

Founding and Early Development (1960-1970)

The National Center for Atmospheric Research (NCAR) was established by the (NSF) on October 31, 1960, in , as a federally funded research and development center to advance atmospheric sciences through shared national facilities and interdisciplinary research. This followed the formation of the (UCAR) in 1959 by scientists from 14 leading universities, which partnered with NSF to manage NCAR and provide resources beyond individual institutional capabilities, such as observational tools and computational support for complex, long-term studies. Walter Orr Roberts, an astrophysicist previously involved in solar research at the High Altitude Observatory, served as NCAR's founding director from 1960 to 1968, overseeing initial staffing and program development while emphasizing collaboration with universities to address fundamental atmospheric dynamics on global scales. Early operations focused on building infrastructure and launching foundational research programs, with construction of the iconic —designed by architect —beginning in 1962 to house laboratories, offices, and computational facilities tailored for atmospheric modeling and observation. The laboratory was dedicated on October 6, 1966, marking a key milestone that enabled expanded on-site activities, including early efforts and instrument development. UCAR's nonprofit structure facilitated governance by its member universities, ensuring NSF oversight while prioritizing scientific merit over commercial interests, with initial funding supporting about 100 staff members by the mid-1960s. Research in the 1960s emphasized innovative observational techniques, such as the project initiated in 1966, which deployed constant-level balloons to map stratospheric wind patterns and circulation, providing empirical data for global atmospheric models. These efforts built on post-World War II advances in , fostering interdisciplinary work in areas like and solar-terrestrial interactions under Roberts' leadership, which prioritized empirical validation over theoretical speculation. By 1970, NCAR had transitioned leadership to Francis Bretherton, reflecting maturation toward sustained growth in computational and field-based atmospheric research amid increasing NSF investments.

Expansion and Institutional Milestones (1970-2000)

In the , NCAR expanded its computational capabilities to meet growing demands for atmospheric modeling, acquiring a supercomputer in 1977, which marked a significant advancement in processing power for simulations previously constrained by earlier systems. This period also saw the establishment of the Research Aviation Facility in 1973, providing specialized aircraft for in-situ atmospheric observations and field campaigns. Concurrently, UCAR formalized its structure by incorporating as a on July 1, 1971, enhancing its role in coordinating university-based research and NCAR management under NSF oversight. The , NCAR's primary facility in , received formal dedication on October 3, 1970, solidifying its role as a hub for interdisciplinary work despite initial construction completion in 1968. Institutional growth continued with the creation of the Advanced Study Program in 1976, aimed at postdoctoral training to build expertise in atmospheric sciences. Leadership transitions supported these developments, including Francis P. Bretherton's presidency of UCAR from 1974 to 1980, during which emphasis shifted toward integrated modeling and observational integration. By the 1980s, NCAR formed the Scientific Computing Division in 1980 to centralize efforts, addressing escalating needs from higher-resolution models and complex physics incorporation. Supercomputing upgrades persisted, with systems evolving to handle increased data volumes amid rising research demands. The and Global Dynamics Division was established on July 1, 1985, focusing on large-scale circulation and variability studies, reflecting NCAR's pivot toward . UCAR's membership expanded, fostering broader collaborations, while late-decade planning initiated searches for additional space to accommodate staff and equipment growth. In the 1990s, facility enhancements included relocating the High Altitude Observatory to a new site in 1990, improving solar and heliospheric infrastructure. Robert Serafin served as NCAR director from 1989 to 2000, overseeing integration of observational and modeling programs amid federal budget shifts. UCAR introduced the Joint Office for Science Support in 1996 to streamline field experiments and for community projects. reached new heights with a upgrade to 2.1 teraflops in 2000, enabling more sophisticated ensemble predictions and . These milestones underscored NCAR's evolution into a cornerstone for multidisciplinary atmospheric , supported by NSF funding that grew to sustain expanded operations.

Recent Evolution and Challenges (2000-Present)

Since 2000, NCAR underwent several leadership transitions that shaped its strategic direction. served as director from 2000 to 2008, emphasizing integration of atmospheric sciences with and geospace research to address coupled Earth-system processes. Subsequent directors included (2008–2010) and Roger M. Wakimoto (2010–2013), under whom NCAR prioritized severe weather prediction and observational enhancements. James W. Hurrell later directed efforts focusing on climate variability and model improvements. These changes aligned with broader NSF priorities for interdisciplinary Earth-system science. Key advancements included the evolution of community modeling frameworks. Building on the Community Climate System Model (CCSM3) released in the mid-2000s, NCAR developed the Community Earth System Model (CESM), with CESM1 launched around 2010 as a fully coupled tool for simulating past, present, and future climate states. CESM2 followed in 2020, incorporating refined ocean, atmosphere, land, and ice components for higher fidelity simulations, while plans for CESM3 advanced in 2024 with infrastructure updates for emerging computational demands. Concurrently, the Model for Prediction Across Scales (MPAS), co-developed with starting in the early 2010s, enabled variable-resolution global forecasting, improving hurricane and precipitation predictions by 2024. These initiatives supported NSF-funded field campaigns and upgrades, fostering collaborations with agencies like NOAA. NCAR has faced persistent challenges from funding volatility, as its operations rely almost entirely on NSF appropriations, making it susceptible to federal budget priorities. In 2018, budget constraints led to the abrupt termination of the Center for Capacity Development, a humanitarian climate adaptation program, despite its role in building resilience in vulnerable regions. Earlier, 2013 cuts forced reductions in educational outreach like the MetEd program. More recently, the FY2026 NSF budget request proposed a 39.7% reduction for NCAR—from $127.7 million to $77 million—threatening large-scale staff and program cuts amid broader agency-wide constraints. Scientifically, models like CESM have grappled with persistent biases in simulating long-term climate dynamics, requiring ongoing refinements to balance complexity and accuracy over two decades of iterations. These issues underscore NCAR's dependence on stable federal support and the need for robust validation in predictive tools.

Mission and Governance

Core Objectives and Research Scope

The National Center for Atmospheric Research (NCAR), sponsored by the (NSF), pursues core objectives centered on advancing fundamental understanding of the Earth's atmosphere and interconnected systems through rigorous scientific inquiry. Established in , NCAR aims to comprehend the behavior of the atmosphere alongside related physical, biological, and social systems, while furnishing the atmospheric sciences community with essential research tools, facilities, and infrastructure for and communication. This includes delivering high-end resources such as supercomputing capabilities, research aircraft, numerical models, and comprehensive datasets that exceed the capacity of individual academic institutions. NCAR's research scope emphasizes basic, process-oriented investigations into atmospheric dynamics, physics, and chemistry, extending to broader Earth system interactions including geospace, ocean-atmosphere coupling, land surface processes, and solar influences on climate variability. Unlike operational forecasting entities, NCAR prioritizes foundational science to elucidate causal mechanisms driving weather phenomena, long-term climate patterns, and environmental changes, often through collaborative efforts with university researchers and interdisciplinary fields like hydrology and terrestrial biology. Key activities involve developing predictive models for Earth system variability, analyzing observational data from field campaigns, and generating peer-reviewed publications that inform policy-relevant insights without direct operational mandates. This scope supports NSF's broader atmospheric sciences portfolio by fostering innovations in areas such as cloud microphysics, aerosol effects, and geomagnetic interactions, with approximately 750 personnel dedicated to these pursuits as of early 2000s assessments. In alignment with its nonprofit management by the (UCAR), NCAR integrates education and outreach as ancillary objectives, including fellowships, workshops, and public engagement to cultivate the next generation of scientists and disseminate findings. These efforts ensure that research outputs enhance community-wide capabilities, prioritizing empirical validation and model fidelity over applied predictions, thereby contributing to verifiable advancements in atmospheric predictability across timescales.

Management Structure via UCAR and NSF Oversight

The National Center for Atmospheric Research (NCAR) operates as a federally funded research and development center (FFRDC) primarily sponsored by the (NSF), with day-to-day management delegated to the (UCAR) under a cooperative agreement. This structure, established since NCAR's founding in 1960, positions UCAR—a nonprofit of 131 U.S. and international universities—as the operational entity responsible for executing NSF directives, while NSF retains ultimate authority over funding, strategic priorities, and performance evaluation. UCAR's of NCAR is directed by its Board of Trustees, comprising representatives elected by member institutions, which sets policies, approves budgets, and appoints the UCAR President who oversees NCAR's directorate. The Board ensures alignment with community needs through advisory committees, such as the Members Nominating Committee and panels, fostering collaborative input on research directions and . UCAR handles administrative functions, including , facilities management, and program implementation, while integrating NCAR into broader UCAR initiatives like community programs for and outreach. NSF exercises oversight through its Division of Atmospheric and Geospace Sciences (AGS) within the Directorate for Geosciences, where program officers monitor progress, conduct site visits, and enforce compliance with federal regulations via annual reviews and performance metrics outlined in the cooperative agreement. Funding, which constitutes the majority of NCAR's budget—approximately $175 million in fiscal year 2018 under prior awards—flows through competitive renewals, with the most recent five-year agreement awarded to UCAR in September 2023 to sustain Earth system science advancements. This mechanism allows NSF to enforce accountability, such as through joint responsibility for scientific advisory committees, without direct operational control, balancing autonomy with public accountability.

Organizational Structure

Laboratories and Scientific Divisions

The National Center for Atmospheric Research (NCAR) organizes its scientific efforts across eight laboratories and programs, each specializing in distinct facets of atmospheric and , from solar influences to applied . These units facilitate interdisciplinary collaboration, leveraging observational data, computational modeling, and field experiments to advance understanding of , , and related processes. The Atmospheric Chemistry Observations and Modeling (ACOM) laboratory conducts research on tropospheric and stratospheric chemistry, integrating aircraft-based measurements, satellite data, and chemical transport models to quantify pollutant lifecycles, ozone dynamics, and aerosol impacts on air quality and climate. The Climate and Global Dynamics (CGD) laboratory develops and applies Earth system models to simulate past, present, and future climate states, emphasizing ocean-atmosphere interactions, variability modes like El Niño, and projections of global change drivers such as greenhouse gases. The Computational and Information Systems Laboratory (CISL) delivers infrastructure, techniques, and cybersecurity for large-scale simulations, supporting petabyte-scale datasets and enabling community access to supercomputers for ensemble forecasting and model intercomparisons. The Earth Observing Laboratory (EOL) manages deployable for field campaigns, including research aircraft equipped with radars, lidars, and in-situ sensors, to collect real-time data on convective storms, boundary layers, and processes during international projects. The High Altitude Observatory (HAO) investigates and its coupling to the upper atmosphere, operating ground-based telescopes and space instruments to study , coronal mass ejections, and heliospheric influences on geomagnetic activity and ionospheric disturbances. The Mesoscale and Microscale Meteorology (MMM) laboratory analyzes convective systems, , and orographic effects using high-resolution models and observations, contributing to improved parameterization of sub-grid processes in prediction models. The Research Applications Laboratory (RAL) translates fundamental research into operational tools for sectors like , , and , developing ensemble prediction systems and impact models for hurricanes, wildfires, and urban heat islands. The Education, Engagement, and Early-Career Development (EdEC) program fosters workforce development through internships, workshops, and outreach, training students and postdocs in , modeling, and ethical to build capacity in atmospheric sciences.

Programs and Collaborative Initiatives

The National Center for Atmospheric Research (NCAR) supports specialized programs that facilitate observational field campaigns, early-career training, and interdisciplinary research integration, primarily through its management by the (UCAR) and funding from the (NSF). These programs emphasize data collection, workforce development, and technology advancement in . A key component is the Earth Observing Laboratory (EOL), which operates NSF NCAR's Lower Atmosphere Observing Facilities for community-led field projects, deploying instruments such as radars, lidars, and sensors to study atmospheric processes. EOL has coordinated nearly 60 years of campaigns with principal investigators from universities and agencies, managing a staff of over 140 and an annual budget exceeding $40 million to provide end-to-end support from planning to data archiving. Educational and training initiatives include the NSF Significant Opportunities in Atmospheric Research and Science (SOARS) program, which bridges undergraduate to graduate levels by offering up to four summers of paid , mentoring, and support in fields like , physics, and . Over 90% of SOARS participants advance to graduate studies, with many completing advanced degrees, fostering diversity and long-term contributions to . NCAR also administers postdoctoral fellowships through the Education, Engagement & Early-Career Development (EDEC) directorate, targeting emerging researchers for projects in dynamics and . Collaborative initiatives extend NCAR's reach via partnerships with federal agencies and academia. In December 2024, NCAR and the (NOAA) renewed a to enhance research, integrating observational data and modeling for improved forecasting and hazard mitigation. Earlier, in 2021, NCAR joined a $25 million NSF-funded effort to incorporate into system models, aiming to refine climate simulations through enhancements. The Nested Regional (NRCM) project involves joint development with and entities to simulate regional atmospheric variability. Through the Cooperative Programs for the Advancement of (CPAESS), NCAR supports interagency staffing, visiting scientists, and large-scale community events like workshops to build ESS capacity across approximately 100 scientists.

Facilities and Technological Infrastructure

High-Performance Computing Resources

The Computational and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR) oversees (HPC) resources, providing advanced computational infrastructure to support atmospheric and research for NCAR scientists, university collaborators, and the broader NSF-funded community. These resources enable large-scale simulations of , , and geophysical processes, with access allocated through competitive proposals and direct allocations for NCAR projects. The primary HPC facility is the NCAR-Wyoming Supercomputing Center (NWSC) in , which opened in 2012 and houses petascale systems dedicated to geoscience applications. The flagship supercomputer, , installed in 2023, is an HPE Cray EX cluster with a peak performance of 19.87 petaflops, featuring 2,488 compute nodes equipped with 128 Milan CPU cores each and 82 GPU-accelerated nodes with four NVIDIA A100 GPUs per node. This system delivers approximately 3.5 times the scientific throughput of its predecessor, Cheyenne, facilitating high-resolution modeling of complex phenomena such as convective storms, ocean-atmosphere interactions, and long-term climate variability. Derecho supports hybrid CPU-GPU workflows, with specialized software stacks optimized for Earth system models like the Community Earth System Model (CESM), and integrates with CISL's data management tools for handling petabytes of simulation output. Users access these resources via batch job submission on shared partitions, with allocations managed by the NCAR Command Language (NCL) and Python-based environments for analysis and visualization. In addition to raw compute power, CISL provides storage systems exceeding 100 petabytes, high-speed networking, and testbeds for emerging technologies like acceleration in geophysical . These capabilities have enabled over 4,000 users from more than 575 institutions to conduct simulations that inform NSF priorities in predictive .

Observational and Field Research Tools

The Earth Observing Laboratory (EOL) at NSF NCAR manages a range of mobile and deployable platforms for collecting atmospheric observations during field campaigns, including research aircraft, ground-based radars, lidars, and in-situ sensors. These tools support targeted data acquisition on phenomena such as cloud microphysics, precipitation processes, and dynamics, with deployments in campaigns like (2015) and (2019). Key airborne assets include the NSF/NCAR (HIAPER), a high-altitude platform equipped for long-endurance missions up to 51,000 feet and carrying modular instrument pods for and measurements, and the NSF/NCAR C-130 , optimized for low-level flights with cargo-bay installations for sampling and launches. The HIAPER Cloud Radar (HCR), a 94-GHz millimeter-wave Doppler system mounted on HIAPER, provides high-resolution vertical profiles of cloud and precipitation particles, as demonstrated in deployments sampling subtropical clouds. Over 100 instrument types are compatible across these , ranging from optical probes for particle sizing to spectrometers for . Ground-based and deployable systems feature the S-band polarimetric (S-Pol) , a transportable C-band dual-polarization with 2.5 km range resolution for studies, and various lidars including differential absorption lidars (DIAL) for and profiling. systems, launched from aircraft or ground, deliver high-vertical-resolution thermodynamic and wind data via GPS-tracked parachutes, with EOL archiving datasets from thousands of deployments in global field programs. The Marshall Field Site near serves as a for calibrating these instruments under controlled conditions, ensuring for campaigns. EOL's Lower Atmosphere Observing Facility (LAOF) integrates these tools with real-time data and post-mission processing to facilitate model validation and process studies.

Aviation and Specialized Facilities

The Research Aviation Facility (RAF), managed by the Earth Observing Laboratory (EOL) within the National Center for Atmospheric Research (NCAR), supports airborne atmospheric research through operation and maintenance of NSF-owned platforms. These capabilities, in place since 1964, enable deployment of sophisticated in-situ instrumentation for measuring atmospheric composition, dynamics, and processes across various altitudes and regions. The RAF certifies instruments for flight safety, processes mission data with quality controls, and archives datasets publicly via the EOL Field Data Archive. The NSF/NCAR HIAPER (GV), a modified business jet, serves as a high-altitude platform reaching up to 49,000 feet (15,000 meters) with a range of about 4,000 nautical miles (7,408 kilometers). It facilitates investigations of stratospheric chemistry, storm-top dynamics, and transoceanic particle transport in remote areas. The NSF/NCAR C-130, based on the , provides versatile lower-tropospheric access with 10-hour endurance, a 2,900-nautical-mile range, maximum altitude of 27,000 feet (8,230 meters), and capacity for 13,000 pounds of payload including thermodynamic, microphysical, radiation, and sensors. These assets form part of the NSF Lower Atmosphere Observing Facilities (LAOF), with specialized features such as burn-tested materials for instrument integration and protocols ensuring operational safety during field campaigns. Complementary specialized facilities include ground-based remote sensors for vertical profiling and flux measurement systems for surface-layer observations, enhancing integrated atmospheric .

Research Focus Areas

Atmospheric Physics and Dynamics

The Mesoscale and Microscale (MMM) Laboratory at NCAR conducts core in atmospheric physics and dynamics, emphasizing processes governing phenomena at mesoscale (1–1000 km) and microscale (10⁻⁶–1000 m) resolutions. This work integrates observations, numerical modeling, and theoretical analysis to elucidate multiscale interactions, including those driving systems, convective storms, and boundary-layer flows. MMM's efforts contribute to enhancing Earth-system predictability by refining representations of physical processes in global and regional models. Within MMM, the (DPM) Section focuses on mesoscale dynamics, microphysics, and , employing in-situ and remote-sensing observations alongside high-resolution simulations. Key investigations target phenomena such as tropical cyclones, severe local storms, and mesoscale precipitating systems, where dynamics couple with microphysical processes like droplet formation and ice nucleation. experiments complement field to quantify cloud-aerosol interactions and turbulent dispersion, informing parameterization schemes for weather and climate models. NCAR researchers through MMM have advanced numerical frameworks, including leadership in developing the Weather Research and Forecasting (WRF) model and the Model for Prediction Across Scales (MPAS), which simulate dynamical features like gravity waves and convective updrafts with improved fidelity across scales. These tools enable analysis of couplings between atmospheric dynamics and surface processes, such as fire-atmosphere interactions and air-sea fluxes, revealing causal mechanisms for phenomena like storm intensification. Such studies underscore the primacy of resolved physics over empirical approximations in capturing causal drivers of atmospheric variability.

Climate Modeling, Prediction, and Variability

The Climate and Global Dynamics Laboratory (CGD) at NCAR conducts research to identify key Earth system processes and their interactions, developing advanced models for climate simulation and prediction. CGD administers the Community Earth System Model (CESM), a fully coupled global model incorporating atmospheric, oceanic, sea ice, land surface, and biogeochemical components, enabling simulations of Earth's past, present, and future climate states. CESM, initiated in 1983 and with CESM2 as its current major release featuring enhanced scientific and computational capabilities, is developed collaboratively with the broader research community under NSF support. These models support investigations into long-term climate dynamics, including responses to forcings such as greenhouse gases. NCAR advances climate prediction through initialized forecasts spanning subseasonal-to-seasonal (S2S) and seasonal-to-decadal (S2D) timescales, utilizing CESM and to quantify predictability limits. The System Predictability Section within CGD focuses on modes such as the Madden-Julian Oscillation (MJO), Pacific Decadal Variability (PDV), Atlantic Multidecadal Variability (AMV), (AMOC), and global monsoons, linking them to high-impact events. Recent evaluations of NCAR coupled models demonstrate progressive improvements in seasonal prediction skill, particularly for North American and , across model generations. These efforts address model biases in representing variability mechanisms and external influences like aerosols. Research on climate variability at NCAR emphasizes observational and model-based analysis of internal modes, including ENSO and droughts, through resources like the Climate Data Guide, which catalogs indices for tracking such phenomena. The Climate Analysis Section integrates dynamics and energetics to examine coupled Earth system variability and anthropogenic influences. Studies leverage CESM outputs and CMIP datasets to probe processes driving regional to global variability, informing predictability enhancements. This work contributes to understanding causal links between variability modes and extreme events, prioritizing empirical constraints from observations.

Weather Systems, Hazards, and Forecasting

The Mesoscale and Microscale (MMM) Laboratory at NCAR conducts research on systems spanning scales from convective clouds to synoptic-scale features, emphasizing the physical processes driving mesoscale phenomena such as thunderstorms, fronts, and orographic . This work integrates observational data from field campaigns with numerical simulations to elucidate mechanisms like storm initiation, upscale growth of , and interactions with , which are critical for understanding regional patterns. NCAR's contributions to weather hazards research focus on severe convective events, including tornadoes, hailstorms, and flash floods, through analysis of storm dynamics and environmental triggers. Scientists employ high-resolution modeling to quantify risks, such as the role of low-level and in formation, informing mitigation strategies for these high-impact events. For tropical hazards, NCAR has advanced technology deployment in hurricanes, improving intensity and track predictions by 20-30% via enhanced inner-core observations. In forecasting, NCAR leads development of the Weather Research and Forecasting (WRF) model, a community tool enabling kilometer-scale simulations that capture explicit for short-term predictions. The model incorporates advances in physics parameterizations and , supporting operational applications like ensemble systems for probabilistic outlooks. NCAR's convection-allowing ensembles provide surrogate diagnostics for hazards, such as helicity for tornado potential, enhancing forecast skill over traditional parameterizations. Recent efforts include experimental 3-km global forecasts resolving individual thunderstorms, bridging gaps in sub-seasonal predictability.

Funding and Financial Management

Primary NSF Funding Mechanisms

The National Center for Atmospheric Research (NCAR) receives its primary funding from the (NSF) through a cooperative agreement with the (UCAR), a nonprofit that manages NCAR's operations as an NSF-sponsored Federally Funded Center (FFRDC). This mechanism supports core activities in atmospheric and related geophysical research, facility maintenance, and community services, with annual allocations determined by NSF priorities, National Science Board authorizations, and congressional appropriations availability. The cooperative agreement is structured as a multi-year , subject to periodic renewal via open for of NCAR, ensuring alignment with evolving scientific needs while maintaining operational continuity under UCAR since the center's establishment in 1960. For instance, a 2018 agreement capped at $630 million over five years, while the 2023 renewal raised the ceiling to approximately $850 million for the subsequent period, reflecting increased scope in computational and observational capabilities. Under this primary award, NSF funds a substantial portion of NCAR's staff and ; as of 2017 data, it supported about 328 full-time equivalents out of 725 total, prioritizing long-term investments over short-term projects. Supplementary NSF grants for targeted initiatives, such as specific modeling or field campaigns, complement but do not supplant this base support, which must be acknowledged in all NCAR outputs regardless of additional sponsorships. The (NCAR) receives its primary operational funding from the (NSF) through a with the (UCAR), which manages NCAR. Nominal NSF core funding for NCAR grew from $69.6 million in (FY) 2000, representing 66.3% of NCAR's total at the time, to approximately $127.7 million in recent years prior to proposed reductions. This increase reflects broader NSF investments in geosciences infrastructure, including a 2023 renewal of the UCAR management agreement that raised the five-year ceiling from $630 million (covering roughly FY 2018–2023, or about $126 million annually) to approximately $938 million for the subsequent period. Despite this nominal growth—outpacing in some periods—NCAR has faced recurrent fiscal pressures from federal constraints and shifting priorities. Over the five years preceding 2024, UCAR reported implementing "painful cuts" across scientific programs, facilities, climate research, weather modeling, and due to stagnant or reduced NSF allocations amid competing demands. Historical examples include a presidential proposal that sought significant NSF reductions, prompting UCAR warnings of threats to U.S. economic and interests tied to atmospheric research. Such proposals often contrast with congressional appropriations, which have historically moderated cuts, but expose NCAR's reliance on annual NSF GEO directorate funding vulnerable to sequestration, continuing resolutions, and partisan debates. In 2025, fiscal pressures intensified with the NSF's FY 2026 request proposing a 39.7% reduction to NCAR's base funding, from $127.7 million to $77 million, as part of broader NSF cuts potentially exceeding 50% in some areas and leading to grant freezes and staff reductions. UCAR officials stated this would necessitate "far-reaching cuts" to programs, laboratories, and personnel, echoing earlier responses to 12% NSF reductions that translated to 10.5% effective cuts for NCAR in prior cycles. These pressures stem from macroeconomic factors like rising operational costs for and field campaigns, compounded by NCAR's status as a Federally Funded Center (FFRDC), which limits revenue diversification beyond NSF's primary award supporting about half of its full-time equivalents.

Leadership and Key Personnel

Sequence of Directors

The National Center for Atmospheric Research (NCAR), established in 1960 under the auspices of the and managed by the (UCAR), has been led by a series of directors who have shaped its focus on atmospheric sciences research.
DirectorTerm
Walter Orr Roberts1960–1968
John W. Firor1968–1974
Francis P. Bretherton1974–1980
Wilmot N. Hess1980–1989
Robert J. Serafin1989–2000
Eric J. Barron2008–2010
Roger M. Wakimoto2010–2013
James W. Hurrell2013–2018
Everette Joseph2018–present
Roberts, an and solar , founded NCAR and emphasized interdisciplinary collaboration between university researchers and federal scientists. Firor, a with expertise in high-altitude observations, navigated early organizational challenges, including the integration of the High Altitude Observatory. Bretherton, a and fluid dynamicist, prioritized computational modeling and long-range planning during a period of expanding federal funding for atmospheric research. Hess, previously at , focused on space-related atmospheric studies amid growing emphasis on data integration. Serafin, a radar specialist, oversaw significant growth in observational facilities and staff expansion to over 800 personnel by 2000. Barron's tenure emphasized strategic realignment amid budget constraints. Wakimoto advanced field observation technologies. Hurrell, a dynamics expert, led efforts in earth system modeling and international collaborations. Joseph, appointed in late , has extended his term through at least 2029, guiding NCAR through fiscal pressures and program evaluations under NSF oversight.

Notable Scientists and Staff Contributions

Warren M. Washington, who joined NCAR in 1963 as a research scientist shortly after earning his Ph.D. in meteorology, played a pivotal role in developing one of the first general circulation models (GCMs) of the atmosphere in collaboration with Akira Kasahara. Their work laid foundational groundwork for simulating global atmospheric dynamics, enabling predictions of greenhouse gas impacts and advancing coupled atmosphere-ocean-ice models that incorporated hydrology, vegetation, and sea-level responses. Washington, serving as a senior scientist and later Distinguished Scholar in NCAR's Climate and Global Dynamics Laboratory, also contributed to paleoclimate research and policy advising for U.S. presidents on climate issues, while promoting diversity in STEM fields. Akira Kasahara, arriving at NCAR in 1963, co-developed these early GCMs with Washington, focusing on numerical methods for weather prediction and climate simulation that influenced subsequent global modeling efforts. His innovations in atmospheric dynamics and supported long-term NCAR initiatives in Earth system modeling. Kevin E. Trenberth, a Distinguished Scholar at NCAR with over 50 years in , advanced understanding of the global , energy budgets, and climate variability through analyses of observational data and model intercomparisons. His efforts, including leadership in World Climate Research Programme activities, improved representations of precipitation, evaporation, and ocean-atmosphere interactions, earning the 2017 AGU Medal for elucidating climate system operations. Clara Deser, a senior scientist in NCAR's Climate and Global Dynamics Laboratory since 1989, has provided fundamental insights into decadal-to-centennial climate variability, including the roles of natural forcings versus human influences in changes. Her pioneering use of large ensemble simulations from Earth system models quantified predictability limits and regional impacts, contributing to tools like the NCAR Climate Variability Diagnostics Package; she received the 2021 AGU Medal and election to the for these advances.

Achievements and Scientific Impact

Major Discoveries and Technological Advances

The National Center for Atmospheric Research (NCAR) has advanced atmospheric modeling through the Weather Research and Forecasting (WRF) model, a next-generation mesoscale system developed collaboratively starting in the late 1990s. Designed for both research and operational forecasting, WRF enables high-resolution simulations of atmospheric processes, including , effects, and spread via extensions like WRF-Fire, which assimilates and imagery for parameter measurements. Its open-source framework has supported widespread adoption, facilitating studies of events and regional climate impacts. In Earth system modeling, NCAR spearheads the Community Earth System Model (CESM), a fully coupled global framework simulating interactions across atmospheric, oceanic, land, ice, and biogeochemical components to reconstruct past climates, analyze present conditions, and project future scenarios. CESM Version 2 (CESM2), released in 2020, introduced key enhancements such as improved representation of cloud-aerosol interactions, dynamics, and biogeochemical cycles, outperforming predecessors in simulating global temperature trends and seasonal sea surface variations. Ongoing development toward CESM3, slated for 2025, incorporates spectral element dynamical cores and advanced ocean models like MOM6 for finer-scale projections aligned with CMIP7 experiments. Observational technologies pioneered by NCAR include the Miniature In-Situ Sounding Technology () dropsonde, which deploys from high-altitude to provide detailed vertical profiles of , , , and in remote or hazardous regions like hurricanes. NCAR's Earth Observing operates specialized such as HIAPER for in-situ measurements, contributing to campaigns revealing pollutant transport and formation mechanisms. Supercomputing infrastructure supports these efforts, with the 2023 deployment of the system—featuring over 3,000 CPU nodes and 382 A100 GPUs—enabling petascale simulations for phenomena like hurricane , where high-resolution models identified distinct dynamical modes involving vortex alignment and eyewall contraction. This has underpinned experimental 3-kilometer global forecasts, offering unprecedented detail for predicting sub-daily weather evolution and extreme events.

Influence on Policy, Education, and Broader Science

The National Center for Atmospheric Research (NCAR), through its managing organization the (UCAR), engages policymakers via congressional briefings that leverage expertise from university consortia and partnerships to address topics, such as and climate variability. UCAR's Office of Government Relations applies NCAR-generated scientific insights to contemporary and legislative priorities, emphasizing sustained federal investments in atmospheric . These efforts aim to inform decision-making on issues like disaster preparedness, though direct causal links to enacted policies remain mediated by broader governmental processes and require scrutiny of underlying data assumptions in models. In education, NCAR supports a spectrum of programs via the Center of Excellence for Education, Engagement & Early-Career Development, including for K-12 educators, undergraduate and students, and postdoctoral researchers in atmospheric sciences. These initiatives encompass workshops, mentorships, and field campaign involvement to build observational skills and model validation techniques. extends to public lectures and multiyear scientist mentorships, fostering pathways for diverse learners to engage with NCAR's tools and . The UCAR for develops interactive resources connecting atmospheric phenomena to real-world applications, prioritizing empirical understanding over generalized narratives. NCAR exerts influence on broader by furnishing the atmospheric research community with advanced modeling frameworks, , and observational facilities, enabling breakthroughs in coupled from solar influences to societal impacts. Its laboratories and programs facilitate interdisciplinary collaborations, such as partnerships with national labs for community modeling, which enhance predictive capabilities across geosciences. Through shared access to specialized assets like research aircraft and via the Facilities for Atmospheric Research and Education (FARE), NCAR broadens empirical validation of hypotheses in related fields, including ocean-atmosphere interactions and . These contributions underscore NCAR's role in verifiable, data-driven advancements rather than unsubstantiated projections.

Criticisms, Controversies, and Debates

Management and Operational Critiques

In a 2019 by the National Science Foundation's of , the (UCAR), which manages NCAR, was found to have claimed $171,804 in questioned costs under NSF awards from April 2012 to March 2015, including $94,559 in unreasonable payroll transfers, $22,048 in unreasonable expenses, and other unallowable or unallocable costs such as and legal fees. The identified weaknesses in administrative and management controls over cost reasonableness, allowability, and allocation, recommending that UCAR strengthen these controls to prevent future noncompliance. UCAR repaid the full amount and implemented corrective actions, which NSF accepted as resolving the issues. Operational challenges have arisen from persistent constraints, exemplified by NCAR's 2008 termination of its Center for Capacity Building program, which focused on climate-impacts for developing countries and trained scientists from those regions. NCAR attributed the closure to several years of largely stagnant federal funding, forcing prioritization of core atmospheric over ancillary programs despite their scientific value. Similarly, in October 2025, UCAR laid off 29 NCAR employees and eliminated 21 vacant positions—primarily in administrative and support roles—amid rising costs, delayed grant payments, and expectations of NSF reductions for fiscal year 2026. These cuts reduced services such as cafeteria hours and shuttle bus operations but preserved functions and avoided furloughs, though a former UCAR executive argued they could indirectly impair scientists' productivity by eroding support infrastructure. NCAR has faced structural critiques for its operational model competing with university-based researchers for NSF grants, positioning it as a "victim of its own success" by drawing resources that might otherwise support distributed academic efforts. NSF peer reviews in the early highlighted concerns over UCAR's of NCAR, the adequacy of UCAR's internal scientific reviews, and NCAR's reliance on non-NSF sources, which some viewed as diluting focused oversight. A 2016 NSF review of NCAR's programs, facilities, and UCAR's similarly scrutinized these dynamics, though it led to continued approval without public disclosure of unresolved operational flaws.

Research Methodologies and Model Reliability

NCAR employs a multifaceted approach to atmospheric research, combining observational data collection through field campaigns and instrumentation, theoretical analysis, and high-resolution numerical modeling. Core methodologies include the development and application of community-shared models such as the Weather Research and Forecasting (WRF) model, which supports mesoscale with dual dynamical cores for research and operational forecasting, and the Community Earth System Model (CESM), which integrates coupled simulations of atmospheric, oceanic, land, sea ice, and biogeochemical processes to study Earth system dynamics. techniques, drawing from reanalysis datasets like NCEP/NCAR, further refine model inputs by incorporating historical observations to improve hindcast accuracy and initialize simulations. Model reliability at NCAR has been assessed through comparisons with observational records, revealing strengths in capturing large-scale features, such as global and distributions, where simulations align closely with empirical data at hemispheric and larger scales. In coupled model intercomparison projects (CMIP), NCAR's CESM variants, including CESM1 and CESM2, demonstrate competitive performance in metrics like mean state simulation and tropical variability, often ranking among top models for North American representation when evaluated against reanalysis and station data. Variable-resolution configurations of CESM have shown improved fidelity for regional phenomena, such as U.S. hydroclimate extremes, by enhancing resolution over targeted domains while maintaining computational efficiency. Despite these advances, systematic biases persist, underscoring limitations in model physics and parameterizations. CESM2, for example, exhibits an elevated equilibrium climate sensitivity of approximately 5.3°C for doubled CO2 concentrations—exceeding the IPCC's assessed likely range of 2.5–4.0°C—potentially due to overstated cloud feedbacks or insufficient representation of low-level cloud responses, leading to projections of amplified surface warming. Evaluations across global climate models, including NCAR contributions, identify recurring issues such as wintertime cold biases in mountainous regions, affecting up to 44 studies worldwide, and inaccuracies in simulating cloud amount, convection, and aerosol interactions, which propagate uncertainties in regional precipitation and extremes. Reanalysis comparisons further reveal that NCAR-influenced products like NCEP/NCAR can underperform ECMWF counterparts in polar regions, with warm biases in the Southern Hemisphere lower troposphere impacting long-term trend reliability. These shortcomings highlight the challenge of verifying sub-grid-scale es against sparse empirical data, where models rely on tunable parameters that may amplify errors in unforced variability or forcings like biomass burning aerosols. While hindcast experiments, such as multi-year CESM1 assessments of moist from diurnal to interannual scales, aid in refining representations, projections remain probabilistic, with ensemble spreads reflecting irreducible uncertainties from internal dynamics and incomplete understanding rather than deterministic forecasts. Independent reviews emphasize that historical simulation skill does not guarantee future projection accuracy, particularly for sensitive feedbacks, necessitating cautious interpretation and continuous empirical validation to mitigate overconfidence in policy-relevant outputs.

Program Terminations, Budget Disputes, and Ideological Influences

In 2008, the (NCAR) terminated its Center for Capacity Building (CCB), a program focused on adaptation and capacity development for global communities, citing budget constraints from sub-inflationary (NSF) funding and reduced agency support. This closure, which represented a small fraction (0.33%) of NCAR's $150 million annual budget at the time, was part of broader reductions including layoffs of approximately 55 staff over five years, attrition of 77 positions (about 16% of NCAR's workforce), and cuts across , , , , and computational programs. The decision drew protests from and policy communities, who viewed it as undermining interdisciplinary approaches to impacts. More recently, in 2025, the NSF proposed a 39.7% reduction for NCAR—approximately $50 million—prompting warnings of large-scale program and cuts in . This proposal, part of the Trump administration's broader push to curtail NSF funding for climate-related projects, including termination of over 100 such grants, reflects ongoing disputes over federal priorities in atmospheric research. Local officials and scientists expressed concerns about impacts on core operations, though has historically adjusted such executive requests. In January 2025, NCAR and its managing organization, the (UCAR), terminated all (DEI) offices and related work, placing staff on paid in compliance with a federal aimed at ending "radical and wasteful" government DEI programs. This action highlights ideological tensions in federally funded research institutions, where DEI initiatives—often criticized as diverting resources from scientific priorities—were phased out amid policy shifts prioritizing fiscal efficiency over mandates. Budget disputes at NCAR underscore partisan divides on the allocation of funds, with administrations like Trump's targeting "climate-dominated" programs deemed misaligned with policy goals, such as reducing emphasis on long-term projections over immediate and operational needs. Critics, including congressional Democrats and advocates, argue these cuts endanger and , while proponents view them as reallocating resources away from ideologically charged agendas that prioritize alarmist narratives over empirical advancements. Such influences have periodically forced NCAR to scale back initiatives, revealing vulnerabilities in NSF-dependent funding amid fluctuating political priorities.

Public Engagement and Accessibility

Scientific Collaboration and Visiting Programs

The National Center for Atmospheric Research (NCAR) facilitates scientific collaboration through structured visiting programs that enable researchers from universities, national laboratories, and international institutions to engage directly with NCAR staff and facilities. These programs, ranging from short-term visits of a few days to extended sabbaticals, aim to foster productive partnerships and integrate external expertise into NCAR's atmospheric and initiatives. For instance, the Climate and Global Dynamics (CGD) Laboratory's Visitor Program supports long-term interactions with university and laboratory collaborators, emphasizing sustained scientific dialogue on topics like modeling and dynamics. NCAR's Advanced Study Program administers the Graduate Visitor Program (GVP), which allows graduate students to spend 2 to 3 months (with provisions for longer stays) at NCAR facilities in , to advance their thesis research while developing collaborations with resident scientists. The program provides stipends covering travel and housing, alongside opportunities for professional workshops and seminars, and has been instrumental in bridging academic research with NCAR's computational and observational resources since its establishment. Similarly, the Atmospheric Chemistry Observations and Modeling (ACOM) Laboratory's Visitor Program promotes partnerships with the global community through targeted visits that enhance educational and research synergies. The High Altitude Observatory (HAO) offers short-term visitor appointments with financial support for undergraduates and graduates, focusing on and related geophysical phenomena. In parallel, NCAR engages in broader collaborations with over 290 non-resident scientists annually from UCAR member universities and beyond, integrating diverse perspectives into projects on weather prediction, climate variability, and geosciences. These efforts extend internationally and to federal partners, as evidenced by a December 2024 with NOAA to share data, tools, and expertise for research. The Research Applications Laboratory (RAL) further supports inclusive initiatives, such as undergraduate-to-graduate bridge programs targeting underrepresented communities in atmospheric sciences. Through these mechanisms, NCAR leverages external talent to address complex environmental challenges while disseminating its observational and modeling capabilities to the wider .

Outreach, Education, and Public Tours

The National Center for Atmospheric Research (NCAR) maintains two visitor centers in , and , featuring interactive exhibits on , , the Sun-Earth connection, and supercomputing to foster public understanding of . These facilities provide hands-on experiences designed to connect ongoing research with visitors, emphasizing the role of atmospheric sciences in broader environmental phenomena. Public tours at the in include free 1-hour sessions held Mondays, Wednesdays, and Fridays from 12:00 p.m. to 1:00 p.m. MT, requiring no reservations and covering topics in and current NCAR research; these are recommended for adults and students in 6th grade or higher, though younger children are welcome. Specialized 2-hour sensory tours, tailored for blind or low-vision visitors, incorporate audio descriptions and tactile elements to explore NCAR's history and scientific contributions. Private group tours for 10 to 30 participants are available by appointment with at least three weeks' notice for standard groups or four weeks for sensory tours, on a first-come, first-served basis. Educational tours and exhibits at these sites have historically reached tens of thousands of visitors annually, serving as a primary avenue for public access to NCAR's work. NCAR's outreach extends through the NSF NCAR Explorer Series, which hosts public lectures by leading researchers on recent advancements in , often in collaboration with institutions like . The UCAR Center for Science Education (SciEd) supports broader engagement with resources including online games, activities, videos, teaching boxes, and lesson plans aimed at students and educators to bridge atmospheric research with K-12 and . Additional initiatives encompass traveling exhibits such as "Resilient Earth, Resilient Communities," which circulates to schools, museums, and libraries to highlight resilience in Earth systems, and community events during field campaigns, including aircraft open houses and school visits. These programs, coordinated via NCAR's Education, Engagement & Early-Career Development efforts, partner with K-12 schools and universities to inspire STEM interest without direct involvement in formal curricula.

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  139. https://bizwest.com/2025/06/08/trumps-plan-to-slash-budget-could-have-big-impact-on-ncar/
  140. https://www.technologyreview.com/2025/06/02/1117653/the-trump-administration-has-shut-down-more-than-100-climate-studies/
  141. https://boulderweekly.com/news/boco-briefly/dei-offices-close-ncar-ucar/
  142. https://www.whitehouse.gov/presidential-actions/2025/01/ending-radical-and-wasteful-government-dei-programs-and-preferencing/
  143. https://www.lathamreg.com/2025/01/executive-order-ending-radical-and-wasteful-government-dei-programs-and-preferencing/
  144. https://www.rmpbs.org/blogs/science-environment/neguse-noaa-cuts-colorado
  145. https://ncar.ucar.edu/opportunities/scientific-professional-visits
  146. https://www.cgd.ucar.edu/visitors
  147. https://edec.ucar.edu/advanced-study-program/graduate-visitor-program
  148. https://www2.acom.ucar.edu/opportunities/acom-visitor-program
  149. https://www2.hao.ucar.edu/about/visitor-program
  150. https://journals.ametsoc.org/downloadpdf/journals/bams/66/5/1520-0477_1985_066_0515_natu_2_0_co_2.pdf
  151. https://www.noaa.gov/news-release/noaa-ucar-renew-expand-partnership-to-advance-extreme-weather-research
  152. https://ral.ucar.edu/work-with-us/visitor-programs
  153. https://www.ucar.edu/what-we-do/university-collaboration
  154. https://ncar.ucar.edu/who-we-are/contact-us/visit-us
  155. https://ncar.ucar.edu/what-we-offer/education-outreach/public/visit-us
  156. https://scied.ucar.edu/visit/ncar-tours
  157. https://ams.confex.com/ams/pdfpapers/26017.pdf
  158. https://edec.ucar.edu/public
  159. https://scied.ucar.edu/
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