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South wind
South wind
South wind
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A south wind is a wind that originates in the south and blows in a northward direction.[1]

Words used in English to describe the south wind are auster, buster (a violent south gale), föhn/foehn (alps), ghibli (Libya with various spellings), friagem (a cold south wind blowing into Brazil from the Antarctic), khamsin (a hot spring wind in Egypt, with various spellings), kona (stormy southwest wind in Hawaii), notus/lodos (see mythology below for origin) and sirocco (North Africa).

Mythology

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In Greek mythology, Notus was the god of the south wind and bringer of the storms of late summer and autumn.[2]

In Roman mythology the south wind was represented by Auster.

In Egyptian mythology, Shehbui is the god of the south wind.[3] He was depicted as a man with the head of a lion.

In Native American Iroquois tradition, the south wind is brought by the Fawn, and has a warm and gentle temperament reminiscent of the sweet flowers, babbling brooks, and the voices of birds of summer.[4]

In Basque mythology, Egoi was a minor deity associated with the south wind.[5]

See also

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References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

South wind

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from Grokipedia
A south wind, also known as a southerly wind, is a wind that originates from the south and blows in a northward direction. In , wind directions are named according to the point from which the wind is blowing, so a south wind corresponds to an approximate direction of 180 degrees on the meteorological . South winds are significant in global weather patterns, particularly in the where they typically advect warm air northward from subtropical regions, resulting in rising temperatures and increased in affected areas. This warm air often precedes warm fronts, contributing to formation, , and milder conditions ahead of advancing low-pressure systems. In the , the effects are generally reversed, with south winds bringing cooler air from higher latitudes. Regionally, south winds take on distinct characteristics and names due to local and . For instance, the (or Scirocco) is a hot, dusty south or southeastern wind originating in the Desert that affects the Mediterranean Basin, often causing heatwaves and reduced visibility during its passage. Other notable examples include the in and the , a dry, warm south wind that can reach force in spring, and the Solano in , a humid south-to-southeasterly flow that brings moisture from the Atlantic. Culturally and historically, south winds have been personified in mythology and . In ancient tradition, the south wind is embodied by (or Notos), one of the wind gods and son of and , depicted as a bringer of late-summer storms, humidity, and agricultural disruption. Biblical references also portray the south wind as a symbol of warmth and change, such as in passages describing its role in bringing warmth or heralding seasonal shifts. These representations highlight the south wind's enduring influence on human perception of weather and environment.

Definition and Terminology

Basic Definition

A south wind, in meteorology, is defined as a wind that originates from the south and blows northward, with its direction reported relative to using a 360-degree compass system where south corresponds to 180 degrees. This convention applies universally to all winds, distinguishing a south wind from other cardinal winds—such as northerly (from the north), easterly (from the east), and westerly (from the west)—based solely on the compass direction from which the air mass flows. These directional distinctions arise from horizontal pressure gradients, where higher atmospheric pressure in the southern region relative to the north drives air movement northward, balanced by other forces like the Coriolis effect. South winds, like all winds, are measured for both speed and direction using specialized instruments. Anemometers quantify wind speed by detecting air flow over rotating cups or ultrasonic sensors, while wind vanes indicate direction by aligning with the prevailing flow through a pivoting arrow or fin. Speed is often classified using the Beaufort scale, an empirical system developed in the 19th century that correlates velocity with observable effects; for instance, a light breeze (Beaufort force 2) ranges from 4 to 7 knots (approximately 7 to 13 km/h). This fundamental definition provides the basis for meteorological analysis, though regional naming variations exist in different cultures and languages.

Regional Names and Etymologies

In English, the term "south wind" derives from sūþwind, a of sūþ (south) and (wind), reflecting its straightforward directional origin. Another historical English term is "auster," borrowed directly from Latin auster, which denoted the south wind and carried connotations of warmth and moisture. The Latin word auster denoted the south wind and personified its god, the Roman equivalent of Greek . The etymology of auster traces to Proto-Indo-European *h₂éwsteros, from *h₂ews- ("dawn"), making it with words for "east." The Greek nótos, from which derives, has an etymology of unclear origin. Across regions, south winds receive distinct names tied to local climates and linguistics. In the Mediterranean, the — a hot, dust-laden wind blowing northward from — originates from the Italian scirocco, an alteration of the Arabic dialectal šlōq (southeast wind), itself derived from sharq meaning "east," reflecting its initial easterly trajectory before veering southerly. Similarly, the , a dry, sand-filled southerly wind affecting and , derives its name from khamsīn (fifties), referring to the approximately 50 days it blows in spring, from the period between and in some traditions. In Libya, the ghibli denotes a hot desert wind descending from the highlands to the coast; its name comes from ghiblī (southern), a variant of standard qiblī, meaning "of the south" or "toward the " (the direction of ). Further afield, the föhn in the European Alps describes a warm, dry downslope wind often originating from southerly airflow; the term stems from German Föhn, tracing back to phōnno, which is linked to Latin Fāonius (or Favonius), the god of the gentle , adapted over time to describe similar warming effects from southern directions. In , the kona wind refers to a stormy, rain-bearing southerly or southwesterly flow during winter; "kona" is a Hawaiian term meaning "leeward," indicating winds from the sheltered, south-facing sides of the islands opposite the prevailing trades. These names illustrate how south winds are linguistically shaped by geographic, cultural, and seasonal contexts, evolving from ancient directional concepts to region-specific descriptors.

Meteorological Aspects

Physical Characteristics

In mid-latitudes, south winds often transport warm air from subtropical regions northward, typically associated with maritime tropical (mT) air masses that originate over warm ocean waters. These air masses are characterized by high temperatures, often exceeding 20°C (68°F) at the surface, due to from lower latitudes where solar heating is more intense. The accompanying humidity is elevated, as the moist air from subtropical highs promotes conditions conducive to . South winds exhibit variable speeds depending on synoptic conditions, generally ranging from 5 to 20 knots (2.6 to 10.3 m/s) in prevailing scenarios driven by moderate gradients. During systems, such as mid-latitude cyclones, gusts can exceed 50 knots (25.7 m/s), contributing to turbulent conditions. Vertical , a key dynamic feature, is defined by ΔVΔz\frac{\Delta V}{\Delta z}, where VV represents and zz denotes above the surface; this shear often intensifies near the top of the , with typical bulk values of 15-20 m/s over the 0-6 km layer in unstable environments supporting development. Associated weather phenomena vary with convergence and stability; south winds can foster when moist air flows over cooler land or sea surfaces, reducing visibility to less than 1 km in coastal zones. In regions of low-level convergence, such as ahead of warm fronts, they supply and that fuel thunderstorms, with updrafts enhanced by conditional . Conversely, under divergent from subtropical highs, south winds may lead to clear skies and stable conditions. The Coriolis effect deflects these winds to the right in the and to the left in the , altering their trajectories relative to pressure gradients.

Global and Regional Patterns

South winds contribute significantly to global atmospheric circulation, particularly within the trade wind belts and monsoon systems. In the trade wind regime, southerly components in the Southern Hemisphere arise from the southeast trade winds, which converge toward the Intertropical Convergence Zone (ITCZ) and facilitate moisture transport across the tropics. During the Southern Hemisphere summer, the ITCZ migrates southward, enhancing southerly flows as low-pressure areas draw warm air equatorward from subtropical highs, promoting convective activity and rainfall patterns. In monsoon systems, south winds drive seasonal reversals, such as the cross-equatorial southerly flow in the Indian Ocean that supplies moisture to the South Asian summer monsoon, intensifying precipitation over the subcontinent. Regionally, south winds exhibit distinct formation mechanisms and impacts. In the Mediterranean Basin, the sirocco—a hot, often dusty south or southeast wind—forms when depressions over the region pull Saharan air northward, often carrying fine dust particles that degrade air quality and deposit sediments across southern Europe. These events typically occur in spring and autumn, with dust transport linked to pressure gradients between North African highs and Mediterranean lows. In North America, southerly low-level jets (LLJs) emerge during spring, channeling warm, humid air from the Gulf of Mexico northward at speeds exceeding 25 knots, which destabilizes the atmosphere and fuels severe weather outbreaks including supercell thunderstorms and tornadoes. This southerly advection is driven by nocturnal boundary layer decoupling and synoptic ridges aloft. Around Antarctica, southerly katabatic winds originate from the cold interior plateau, where radiative cooling densifies air that drains downslope under gravity toward coastal areas, reaching speeds up to 20 meters per second and shaping the region's hyper-arid climate. These winds flow radially outward from the elevated ice sheet, converging in glacial valleys before accelerating over the ocean. Seasonally, south winds are more prevalent in the winter hemispheres, where they enable warm air by transporting milder equatorial air poleward, counteracting and influencing mid-latitude temperature gradients. In the winter, southerlies ahead of advancing cyclones promote veering winds and rising temperatures, while in the winter, similar patterns moderate austral cold snaps. Anthropogenic has been linked to alterations in patterns, including poleward shifts in extratropical storm tracks since the 1980s, with medium confidence in continued trends. For instance, projections for North American LLJs indicate increased (up to 20% in some regions) by mid-century, potentially enhancing moisture transport and . In south Asian regions, warming is projected to intensify precipitation by approximately 4% per degree Celsius of global warming, based on models. As of 2025, ongoing observations continue to monitor these trends, with recent studies (2022-2024) confirming amplified variability linked to warming.

Mythology and Folklore

Greco-Roman Tradition

In , (Νότος, Nótos) was the god personifying the south wind, one of the four principal or directional wind deities. He was the son of the Titan , god of the dusk star, and , the goddess of dawn, making him the brother of (north wind), (west wind), and (east wind). embodied the hot, humid, and often destructive gusts associated with late summer and early autumn, bringing heavy rains, thunderstorms, and the melting of snow in higher latitudes. Notus was particularly feared for his role in unleashing violent storms that could devastate agriculture, earning him a reputation as a bringer of crop destruction and seasonal turmoil. In artistic depictions from vase paintings and later Roman mosaics, he appeared as a bearded, winged male figure, often with dark or black wings to symbolize the ominous, rain-laden nature of his winds, sometimes pouring water from a or . As one of the , resided in the mythical realm of Aeolia, a in the near the (modern ), where the winds were confined under the stewardship of , king of the winds. His interactions with his brothers highlighted contrasts in temperament, with Notus's stormy ferocity standing in opposition to Zephyrus's gentle breezes, reflecting broader mythological tensions among the winds over seasonal dominance. In , was equated with Auster, the deity of the south wind, who shared similar attributes as a harbinger of wet, tempestuous weather and agricultural peril. Auster was invoked in literature as a powerful, destructive force; in Vergil's , he unleashes a massive storm in the Mediterranean, scattering Aeneas's fleet and symbolizing divine wrath against the Trojan hero's journey. Like his Greek counterpart, Auster was localized to southern regions in Roman cosmology, often depicted in art with dark wings and rain-bearing imagery, reinforcing his role in the cycle of seasonal rains and floods.

Other Cultural Representations

In , Shehbui serves as the god of the south wind, often depicted as a winged man with a lion's head, embodying a fierce yet protective force associated with the desert's scorching gusts. He is paired with Qebui, the counterpart deity of the , forming a duo that balances the directional winds in ancient cosmological views, with Shehbui appearing in tomb art as a guardian against malevolent spirits. Among the Iroquois peoples, the south wind is personified by Ne-o-gah, the Fawn spirit, who delivers gentle, warming breezes in springtime, symbolizing renewal and the awakening of nature within their creation narratives. This figure contrasts with the harsher winds of other directions—such as the bear-like —and underscores the Fawn's role in fostering growth and harmony in the seasonal cycle of folklore. In , Egoi functions as a minor deity governing the south winds, closely tied to agricultural rhythms by bringing milder airs that aid crop maturation in the region's . Similarly, Mesopotamian traditions in the Enuma Elish portray the south wind as one of four cardinal directional winds invoked by the god during his battle with , where these winds—alongside north, east, and west—form an inescapable net to aid in cosmic ordering. Native American cultures, such as the Kanza (also known as Kaw), incorporate the south wind into their tribal identity as the "People of the South Wind," reflecting a deep cultural connection to the warming, life-sustaining gusts of the that shaped their migratory and subsistence practices. In Polynesian oral traditions, particularly Hawaiian folklore, the kona winds—stormy southwesterly blows—are featured in tales of turbulent seas and natural forces, often symbolizing disruption or trials faced by voyagers and communities.

Cultural and Symbolic Roles

In Religion and Spirituality

In the , the south wind is frequently depicted as a harbinger of warmth and prosperity, symbolizing divine provision and the predictability of God's natural order. In Job 37:17, it is described as quieting the and warming garments, illustrating its role in bringing comfort and to the land during times of stillness. Similarly, in Luke 12:55, references the south wind as a reliable sign of impending heat, contrasting human discernment of weather with spiritual insight, thereby underscoring themes of divine favor through natural benevolence. Within Native American spiritual traditions, particularly in the context of the , the direction is associated with , summer, and the element (or sun), representing growth and . In modern and esotericism, such as Wiccan practices, the is invoked as an embodiment of the element, channeling energies of transformation, action, and passion during rituals. Practitioners call upon it to ignite willpower and catalyze change, aligning with the directional correspondences where south governs fire's dynamic qualities in circle-casting and elemental magic. This draws on the inherent to empower spells for personal and renewal, emphasizing its role in spiritual workings that seek to burn away stagnation. In , the samum— a scorching south —is referenced in the as "nār as-samūm," or fire of a scorching , symbolizing infernal and divine testing through natural forces. 15:27 describes the creation of from this intense, pestilential fire, portraying it as a manifestation of Allah's power that can bring affliction as a of . Such winds serve as reminders of or punishment, with their destructive heat testing believers' endurance akin to eschatological fires. Hindu Vedic traditions associate southerly monsoon winds with and renewal, celebrated in that invoke rains for agricultural abundance and life's cyclical vitality. The Rigveda's (RV 7.103) praises the onset of monsoon showers—driven by southwest winds—as awakening and , symbolizing prosperity, cattle wealth, and communal rejuvenation through Parjanya's benevolence. These frame the winds as divine agents fostering growth and ritual harmony, tying seasonal to spiritual devotion.

In Literature, Art, and Modern Culture

often contrasts directional winds to explore renewal and destruction, with the south wind occasionally invoked as a warmer, more languid counterpoint to fiercer northerlies. In modern eco-fiction, south winds feature as amplified harbingers of climate disruption, such as in Amitav Ghosh's (2004), where southerly gales intensify cycles, mirroring rising sea levels and ecological imbalance in the . Roman art frequently depicted Auster, the Latin equivalent of , as a figure pouring from a to signify rain-bearing qualities. In painting, ethereal wind figures appear in allegories of spring and renewal. Salvador Dalí's 20th-century drew on fluid, wind-swept forms inspired by Mediterranean siroccos, as seen in The Palace of the Wind (1974), where distorted architectural elements mimic the south wind's erosive, dreamlike distortions. The south wind has influenced modern place names and cultural identities, notably in the etymology of , derived from the Kaw (Kanza) people's name meaning "People of the South Wind," reflecting their historical association with prairie gales in Siouan lore. Weather folklore perpetuates the south wind's rainy reputation through proverbs like "The south wind surely brings a shower," rooted in European and North American traditions observing its moisture-laden approach. In 21st-century media, the —a hot, dusty south wind—symbolizes psychological turmoil, as in films like Sirocco (1951), where its oppressive presence heightens tension and evokes a sense of desert-induced frenzy amid geopolitical strife.

References

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