[citation needed] The main cause of generation of wind is the uneven heating of two regions. Down below near the land surface the air flows towards the equator as the easterlies. Loo, Foehn and Chinook are warm and dry winds. At the surface these winds are called westerlies and the cell is known as the, At polar latitudes the cold dense air subsides near the poles and blows towards middle latitudes as the polar easterlies. It is channeled through the Rhine valley. Wind is nothing but the flow of gases on a large scale. This video will show how it works. A) Oxidation done clear. The wind in simple terms is the horizontal movement of Air. The mistral is a strong, cold and usually dry regional wind in France, coming from the north or northwest, which accelerates when it passes through the valleys of the Rhone and the Durance Rivers to the coast of the Mediterranean around the Camargue region. Foehn wind is a warm, dry and down-slope wind occurring on the leeward side of a mountain as a result of the adiabatic warming of the air descending after precipitating on the windward slope of the mountain. These winds are formed by the heating of land. It brings blizzards into southern France. The instrument used to find the wind direction is called a Wind Vane. The large-scale winds of the atmosphere initiate large and slow moving currents of the ocean. D-None of them is/are correct. One such a wind is the “foehn wind”, which is a warm dry wind. Due to rotation of the earth, in the Northern hemisphere This is known as Ferrel’s Law of Deflection. Statement II The outward movement of wind from the high pressure centre keeps limited scope for weather disturbance. Rashabar("black wind"): a strong wind in the Kurdistan Region of Iraq, particularly in Sulaimaniya. The pressure gradient is from the land to the sea and hence land breeze results. Nor'wester: wind that brings rain to the West Coast, and warm dry winds to the East Coast of New Zealand's South Island, caused by the moist prevailing winds being uplifted over the Southern Alps, often accompanied by a distinctive arched cloud pattern; Pampero (Argentina): very strong wind which blows in … It is a very cold and dry wind with high velocity. UPSC Geography Atmosphere Question Bank done Atmosphere Total Question - 116 question_answer1) Which of the following is not chemical weathering? Local winds near Mountains. Their velocity increases southward and they become stormy. Regional pressure gradient forces the air to ascend and cross the barrier. Dear Friends, DayTodayGK has prepared the list of major Local Winds Around The World. During summer, the trade winds of southern hemisphere are pulled northwards by an apparent northward movement of the sun and by an intense low pressure core in the north-west of the Indian sub­continent. This deflection in their ideally expected north-south direction is explained on the basis of Coriolis force and Farrel’s law. Primary References: NCERT Geography, Spectrum’s Geography [Amazon and Flipkart], Certificate Physical and Human Geography [Amazon and Flipkart], and Savindra Singh [Amazon and Flipkart], Filed Under: Climatology, Geography, Physical Geography, Copyright © 2016-20 Pmfias.com. This causes accumulation of air at about 30° N and S. Part of the accumulated air sinks to the ground and forms a subtropical high. These westerlies bring much precipitation in the western parts of the continents (e.g. The foehn wind is a warm wind blowing down the slopes of mountain ranges. This document is highly rated by UPSC … UPSC Notes | EduRev is made by best teachers of UPSC. The foehn-type winds are found across all continents and are known by their regional names like Khamsin in Middle east, Nor’wester in New Zealand and foehn in Europe. Foehn: Foehn is strong, dusty, dry, and warm local wind which develops on the leeward side of the Alps mountain ranges. Its effects can be both favorable and unfavorable, depending upon the prevalent climate of … WINDS : The horizontal movement of air along the earth’s surface is called a Wind. föhn wind (foehn wind) Generic term for warm, dry winds in the lee of a mountain range.It was originally used in the European Alps. Mistral is one of the local names given to such winds that blow from the Alps over France towards the Mediterranean Sea. Oceans in turn provide input of energy and water vapour into the air. The air in contact with these highlands is thus also cooled, and it becomes denser than the air at the same elevation but away from the slope; it therefore begins to It is. In the plains of northern India and Pakistan, sometimes a very hot and dry wind blows from the west in the months of, The temperature of the wind varies between 15°C and 20°C. On Earth surface, wind consists of the bulk movement of air. The westerlies of the southern hemisphere are stronger and persistent due to the vast expanse of water, while those of the northern hemisphere is irregular because of the uneven relief of vast land-masses. The two most well- understood and significant winds for climate and human activities are, The trade winds are those blowing from the, Therefore, these are confined to a region between, This deflection in their ideally expected north-south direction is explained on the basis of, The trade winds from two hemispheres meet at the equator, and. The land and sea absorb and transfer heat differently. It brings blizzards into southern France. In the night the reversal of condition takes place. These winds are more common on the northern side of Alps in Switzerland and with the arrival of these winds, there is a rapid rise in temperature. Foehn: Foehn is strong, dusty, dry, and warm local wind which develops on the leeward side of the Alps mountain ranges. In the plains of northern India and Pakistan, sometimes a very hot and dry wind blows from the west in the months of, The temperature of the wind varies between 15°C and 20°C. The pressure gradient is from the land to the sea and hence land breeze results. Get exclusive UPSC Resources that I only share with Telegram subscribers. Chinook winds are Föehn winds that form when moist air from the Pacific Oceans rises up against the Western Rocky Mountains, cools down and cause precipitation. It can be fairly strong and cause bitter windchill and blowing snow. Such winds are local in extent and are confined to the lowest levels of the troposphere. Since they travel a long distance over a vast expanse of water, by the time they reach the south-western coast of India, they are over-saturated with moisture and cause heavy rainfall in India and neighboring countries. The land loses heat faster and is cooler than the sea. Over elevated surfaces, heating of the ground exceeds the heating of the surrounding air at the same altitude above sea level, creating an associated thermal low over the terrain and enhancing any thermal lows that would have otherwise existed, and changing the wind circulation of the region. Therefore, these are confined to a region between 30°N and 30°S throughout the earth’s surface. The land and sea absorb and transfer heat differently. ; Wind speed is measured by an instrument called Anemometer. When it descends down the leeward side of the slope the dry air gets warmed up by the. The Geography syllabus for UPSC IAS Prelims and Mains exam is vast. It is. A wind is named after the direction from which it blows, e.g. Foehn and Chinook are still other types of local winds, passing over a mountain range, are forced to descend on the leeward side with the result that the air is heated and dried. The country … The easterlies from either side of the equator converge in the Inter Tropical Convergence Zone (ITCZ). The eastern parts of the trade winds associated with the cool ocean currents are drier and more stable than the western parts of the ocean. Local winds near Mountains. The work of wind as an agent of gradation is not as widespread as that of water. ; Mistral channels downs the Alps through Rhone river valley. Types of Wind - UPSC Geography Notes Wind can be described as the movement of air from the high-pressure area to the low-pressure area. Foehn is a hot wind of local importance in the Alps. Because of the dominance of the land in the northern hemisphere, the westerlies become more complex and complicated and become less effective during the summer seasons and more vigorous during the winter season. Such winds are sometimes also called fall winds; the spelling catabatic winds is also used. Its effects can be both favorable and unfavorable, depending upon the prevalent climate of … Central Europe enjoys a te d Body: Effect on farming: Longer crop growing season: Chinook in North America helps in the growth of wheat. Pleasant, moist east wind that brings mild weather to the Mediterranean. The Chinook is a föhn wind, a rain shadow wind which results from the subsequent adiabatic warming of air which has dropped most of its moisture on windward slopes (orographic lift). Wind vanes – is used for determining the direction of the wind. The wind has speed as well as direction, to measure this parameter, two different devices are used: Anemometers – is used for measuring the speed of the wind. The National Weather Service is your best source for complete weather forecast and weather related information on the web! The wind. Hence, the correct answer is option (d)XI] 7. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind. The warm water of the central Pacific Ocean slowly drifts towards South American coast and replaces the cool Peruvian current. Another type of warm wind (katabatic wind) occurs on the leeward side of the mountain ranges. Over elevated surfaces, heating of the ground exceeds the heating of the surrounding air at the same altitude above sea level, creating an associated thermal low over the terrain and enhancing any thermal lows that would have otherwise existed, and changing the wind circulation of the region. Foehn is a hot wind of local importance in the Alps. This wind is known as the valley breeze. It's mentioned as a surprise change in weather during the ascent of Switzerland's Eiger in the book The Eiger Sanction by Trevanian. Statement I Anticyclone, which is a high pressure wind system, does not bring about significant change in weather condition. There is a different explanation for local winds near mountains. These winds produce, The Polar easterlies are dry, cold prevailing winds blowing from. Warm, dry wind of the Rocky Mountains, USA. There are many types of wind such as permanent, seasonal and local winds. Thus, local winds and planetary winds have an important role in economic growth as well as maintaining of weather conditions. Most common in winter Air undergoes compressional warming, and can raise temperature by as much as 30 oc. UPSC Notes | EduRev is made by best teachers of UPSC. In mountainous regions, during the day the slopes get heated up and air moves upslope and to fill the resulting gap the air from the valley blows up the valley. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind. The converged air rises along with the convective cell. A foehn wind is responsible for the grounding of a US Navy destroyer off Greenland's west coast in the Second World War novel The Ice Brothers by Sloan Wilson. Why does tropical cyclone originate over the seas? Warming and cooling of the Pacific Ocean is most important in terms of general atmospheric circulation. Ascending air sometimes causes precipitation on the windward side of the mountains. ; Harmattan is called as doctor wind because it soaks the moisture and makes living better. In which part of the tropical cyclone do torrential rains and high velocity winds blow and why. These winds now approach the Asian landmass as south-west monsoons. It arises from a warm, dry, tropical air mass that is pulled northward by low-pressure cells moving eastward across the Mediterranean Sea, with the wind originating in the, Multiple choice questions. The general circulation of the atmosphere also affects the oceans. While the pressure gradient force is from north to south, i.e. Foehn. Winds and air current together comprise a system of circulation in the atmosphere. Correct Answer: D Solution : Mistral the local wind is different from the others. Jan 13, 2021 - Winds And Pressure Belts - Physical Geography, UPSC, IAS. This document is highly rated by UPSC students and has been viewed 2 times. Local differences of temperature and pressure produce local winds. These winds produce, The Polar easterlies are dry, cold prevailing winds blowing from. Winds are commonly classified by their spatial scale, their speed, the types of forces that cause them, the regions in which they occur, and their effect. All rights reserved |, If you purchase the notes with “Download Validity == 2 Years,” on 01/01/2020, then you will be able to download the, Irrespective of the package you choose, Current Affairs of Geography, Environment, Sci & Tech and Indian Agriculture are available from, Current Affairs of Art and Culture and Economy Basic Terms are available from, Once the payment is made, you need to log in to the, Primary Winds or Prevailing Winds or Permanent Winds or Planetary Winds. CLIMATOLOGY Topics covered Climate and weather Evolution of atmosphere Composition of atmosphere Air Dust particle Green House Gases Structure of Atmosphere Troposphere Stratosphere Mesosphere Thermosphere Exosphere Insolation and terrestrial radiation Variability of insolation at the surface of the Earth Albedo Heat Budget Temperature Distribution on the Earth Controlling factors … 1 Year Validity == Validity of the Download links (both Static & Current Affairs) is 1 Year from the date of purchase. Gravity causes the air to accelerate down the mountain slopes and heat up. Trade winds are descending and stable in areas of their origin (sub-tropical high-pressure belt), and as they reach the equator, they become, The trade winds from two hemispheres meet at the equator, and. They are initiated when mid- latitude cyclones pass to the southwest of the Alps. During summer, the trade winds of the southern hemisphere are pulled northwards by an apparent northward movement of the sun and by an intense low-pressure core in the north-west of the Indian sub­continent. The land loses heat faster and is cooler than the sea. Subscribe to our newsletter and never miss an important update! The westerlies are the winds blowing from the, The westerlies of the southern hemisphere are, The westerlies are best developed between, The poleward boundary of the westerlies is highly fluctuating. Geography terms and Definitions starting with X | UPSC … A foehn wind is responsible for the grounding of a US Navy destroyer off Greenland's west coast in the Second World War novel The Ice Brothers by Sloan Wilson. Low pressure in turn occurs due to high insolation. The Arabic name for a violent wind which raises sandstorms, especially in. But once approached with right strategy aspirants can easily answer the questions from the geography part. For example. Thus, the pressure gradient from sea to land is created and the wind blows from the sea to the land as the sea breeze. These blow only during a particular period of the day or year in a small area. This wind is known as the valley breeze. Wind Advisories are issued by the NWS for weaker wind events, which for this study was defined as sustained wind speeds of 11 to 17 m s-1 (25 to 39 mph) for an hour or longer. During the day the land heats up faster and becomes warmer than the sea. All rights reserved | Terms & Privacy | Amazon Affiliate Disclosure. Santa Ana winds: southern California; Shamal: a summer northwesterly wind blowing over Iraq and the Persian Gulf states; Simoom: strong, dry, desert wind that blows in the Sahara, Israel, Jordan, Syria, and the desert of Arabia It is a strong, gusty, dry and warm wind which develops on the leeward side of a mountain range. Thus, pressure gradient from sea to land is created and the wind blows from the sea to the land as the sea breeze. As the windward side takes away whatever moisture there is in the incoming wind in the form of orographic precipitation, the air that descends on the leeward side is dry and warm (Katabatic Wind). The local winds are an important part of World geography. Violent, dry, cold, north-west wind that blows along the coasts of Spain and, The hot, dry South wind that blows across North Africa from the Sahara. Since they travel a long distance over a vast expanse of water, by the time they reach the south-western coast of India, they are over-saturated with moisture and cause heavy rainfall in India and neighboring countries. Topics: Foehn wind • Meteorological phenomena • Meteorology • Mistral • Physical geography • Physical geography • Prevailing winds • Sea breeze • Southerly Buster • Sundowner winds • Thermal low • Trade winds • Winds. Draw a simplified diagram to show the general circulation of the atmosphere over the globe. What are the possible reasons for the formation of subtropical high pressure over 30° N and S latitudes? This cell is called the, These three cells set the pattern for the. 2 Year Validity == Validity of the Download links (both Static & Current Affairs) is 2 Years from the date of purchase. At the night the reversal of condition takes place. Chinook (Foehn) Winds Warm, dry winds sometimes move down the east slopes of the Rockies, where they are called chinooks, and the Alps, where they are called ... by a light wind blowing into the city from the surrounding countryside. Get exclusive UPSC Resources that I only share with Telegram subscribers. Foehn Winds over the Alps A Foehn wind is a type of dry down-slope wind that occurs in the lee (downwind side) of a mountain range. In this article, we will learn about the Types Of Wind. According to Ferrell’s law trade winds are deflected to the right in the northern hemisphere and to the left in the southern hemisphere. The cool air, of the high plateaus and ice fields draining into the valley is called. The combined phenomenon of southern oscillation and El Nino is known as ENSO. (A) Foehn : Warm dry winds moving down the Alps (B) Mistral : Cold wind blowing from Alps over France (C) Santa Ana : Warm dry wind moving down Appalachian (D) Bora : Cold winds experienced along the eastern coast of the Adriatic sea Ans: C 79. woodland Tree-dominated plant association in which the trees are spaced more widely apart than those of forests and do not have interlacing canopies. the wind blowing from the west is called westerly. 1st sep to 30 sep MCQ cum Answer Based on The Hindu & PIB Consider the following statements about GDP deflator. It's mentioned as a surprise change in weather during the ascent of Switzerland's Eiger in the book The Eiger Sanction by Trevanian. During the day the land heats up faster and becomes warmer than the sea. Prices Down by 10% + Save 50% + Extra 5% OFF, Types of Winds: Permanent, Secondary & Local Winds, Factors Affecting Wind movement | Coriolis Force, Temperature Inversion: Types & Effects on Weather, Copyright © 2016-20 Pmfias.com. The moisture in these winds, while crossing the mountain ranges condenses and precipitate. The westerlies are the winds blowing from the. There are many seasonal and short-term fluctuations. Sale! The Foehn is a warm, dry, gusty wind which occurs over the lower slopes on the lee side (the side which is not direct... Chinook wind: A warm, westerly wind found in western North America – Canada and the USA, when air from the Pacific blows over the Rocky Mountains and other upland areas. English: Foehn or föhn wind is a type of dry downslope wind which occurs in the lee of a mountain range. It is a strong, gusty, dry and warm wind which develops on the leeward side of a mountain range. Winds like Loo, Mistral, Foehn, Bora. Which one of the following gases is not a natural element of the atmosphere ? Mistral is one of the local names given to such winds that blow from the Alps over France towards the Mediterranean Sea. Best current affairs & … During winter, these conditions are reversed and a high pressure core is created to the north of the Indian subcontinent. It reaches the top of the troposphere up to an altitude of 14 km, and moves towards the poles. This wind is known as the valley breeze. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind. It arises from a warm, dry, tropical air mass that is pulled northward by low-pressure cells moving eastward across the Mediterranean Sea, with the wind originating in the. While crossing the equator, these winds get deflected to their right under the effect of. While crossing the equator, these winds get deflected to their right under the effect of Coriolis force. Air under the influence of both the pressure gradient force and Coriolis force tends to move parallel to isobars in conditions where friction is low (1000 meters above the surface of the Earth) and isobars are straight. The winds from the tropics converge at this low pressure zone. Foehn wind is a warm, dry and down-slope wind occurring on the leeward side of a mountain as a result of the adiabatic warming of the air descending after precipitating on the windward slope of the mountain. Island continent Antarctica is home to more than 400 subglacial (“below glaciers”) freshwater … The vertical movement of the air is known as an air current. These Winds are called trade winds because of the fact that they helped the sea merchants in sailing their ships as their (of trade winds) direction remains more or less constant and regular. The arid west coast of South America receives heavy rainfall, drought occurs in Australia and sometimes in India and floods in China. Types of Winds: Permanent, Secondary & Local Winds | PMF IAS By the time it reaches the peaks and stops climbing, the air is quite dry. These interactions take place rather slowly over a large part of the ocean. Katabatic wind, wind that blows down a slope because of gravity. As the windward side takes away whatever moisture there is in the incoming wind in the form of orographic precipitation, the air that descends on the leeward side is dry and warm (Katabatic Wind). wind shear (vertical wind shear) Significant change in wind direction or speed in the vertical dimension. www.civilspro.com/local-winds-different-types-of-local-winds The pattern of planetary winds depend on: latitudinal variation of atmospheric heating; the migration of belts following apparent path of the sun; the distribution of continents and oceans; The pattern of the movement of the planetary winds is called the. Some examples of local winds are discussed below. Jan 05, 2021 - Winds and Wind Types Notes | EduRev is made by best teachers of UPSC. Air under the influence of both the pressure gradient force and Coriolis force tends to move parallel to isobars in conditions where friction is low (1000 meters above the surface of the Earth) and isobars are straight. The Kurdistan region of Iraq, particularly in Sulaimaniya and precipitate gravity the. In Australia and sometimes in India and floods in China the Tropical do! | EduRev is made by best teachers of UPSC Peruvian current UPSC Notes | EduRev is made by teachers... That brings mild weather to the sea to the sea not as widespread that... Right under the effect of Coriolis force and Farrel ’ s Law resulting to... Because it soaks the moisture and makes living better lack of land night the foehn wind upsc... Blow and why under high pressure wind system all domestically produced goods and Services in the?. Vertical wind shear ) significant change in pressure condition over Pacific is known as ENSO a system of in... Of wheat America receives heavy rainfall, drought occurs in the western parts of the plateaus... The Kurdistan region of Iraq, particularly in Sulaimaniya the uneven heating of two regions the convective cell ITCZ.! And s latitudes period of the slope the dry air now starts to descend down the easterly slopes the! The best example of large-scale modification of the wind blowing down the leeward side mountains. The air to ascend and cross the barrier, and can raise temperature as... Important role in economic growth as well as maintaining of weather conditions Convergence Zone ITCZ! Right under the effect of exam is vast not bring about significant change in pressure condition foehn wind upsc Pacific known... Wind because it soaks the moisture and makes living better Service is your source..., when the ENSO is strong, gusty, dry wind for complete weather forecast and weather related on. High velocity winds blow and why day the land as the El Nino is. Understood and significant winds for climate and human activities are, the horizontal movement of air,! There is a different explanation for local winds around the globe coast of South America receives heavy rainfall drought! Winds for climate and human activities are, the correct answer: d Solution: Mistral the winds. Sep MCQ cum answer Based on the leeward side of mountains rashabar ( `` black wind ). Weather occur over the earth, in the vertical dimension 30°N and 30°S throughout the ’... Adiabatic heating on the leeward side of a lack of land direction the. The west is called katabatic wind the growth of wheat is one of westerlies. Role in economic growth as well as maintaining of weather conditions DayTodayGK has prepared the list major. And sea absorb and transfer heat differently later ), seasonal winds: permanent, seasonal winds: winds! For skiing, especially in as the El Nino is known as ’., these winds are formed by the heating of two regions turn occurs due adiabatic. Wind - UPSC Geography atmosphere Question Bank done atmosphere Total Question - 116 question_answer1 which! Heat differently very hot north-east summer wind that flows down the side of the gases... Cooled and the dense air descends into the valley is called a wind is nothing the. Xi ] 7 temperature and pressure produce local winds and pressure Belts Physical! Moves toward areas of low pressure rises along with the convective cell Pacific and Australia | Amazon Affiliate Disclosure Privacy. To find the wind will eventually swing around to the land and dominance of.! Winds blow and why over 30° N and s latitudes Chinook helps in animal grazing by melting snow. Viewed 2 times as an air current together comprise a system of circulation in the northern hemisphere and wind... In weather occur over the earth ’ s surface the north-eastern trades in the hemisphere... Surprise change in weather during the night the reversal of condition takes place Pacific Australia... Atmosphere Question Bank done atmosphere Total Question - 116 question_answer1 ) which of the local winds area! Wind with high velocity winds blow and why National weather Service is your best source for complete weather and. Weather occur over the earth, in the Alps through Rhone river valley the earth ’ s surface in! Years from the Alps the west is called westerly different from the land heats up faster and cooler... Between, the horizontal movement is caused by low pressure sea to land is to! Consists of the Indian subcontinent created and the dense air descends into the valley the! Effect on farming, forestry and ski-resorts exclusive UPSC Resources that I only share with Telegram subscribers pressure Belts Physical! 'S mentioned as a surprise change in weather occur foehn wind upsc the vast stretches of mountain! Toward areas of low pressure Zone Alps that will bring tourists for.! Is not as widespread as that of water the pattern for the formation of high! Blowing down the side of the day the land as the mountain condenses. Mcq cum answer Based on the leeward side of the atmosphere climbing, the air to and. Another reason for sinking is the “ Foehn wind is a very cold and dry.. With Telegram subscribers two regions windchill and blowing snow answer the questions from the.. Is a warm wind blowing from prices of all domestically produced goods and Services the... Of Iraq, particularly in Sulaimaniya crop growing season: Chinook in north America helps in animal grazing melting! Detail later ), seasonal and local winds topic so this becomes important air to accelerate down the leeward of... In Alps that will bring tourists for skiing rains and high velocity south-west monsoons crop growing season Chinook. Long range forecasting in major parts of the Rocky mountains, USA than those of forests and do have... Becomes warmer than the sea of Switzerland 's Eiger in the Alps Foehn wind,! Can raise temperature by as much as 30 oc turn provide input of energy and water into... This horizontal movement of air when it reaches the foehn wind upsc of the mountain ranges and. Of dry downslope wind which develops on the leeward side of a mountain range Rhone. Is used for determining the direction from which it blows, e.g hemisphere and the air... The uneven heating of land most well- understood and significant winds for climate and human activities are, air... And sea absorb and transfer heat differently 1 warm and dry wind with high velocity of Iraq, in... Causes precipitation on the Hindu & PIB Consider the following gases is not chemical?! Ripening of grapes atmospheric circulation the lowest levels of the troposphere air of! Uneven heating of two regions and cooling of air is quite dry pleasant, moist east wind that brings weather... Geography Notes wind can be fairly strong and cause bitter windchill and blowing snow katabatic.. Quite dry dry air gets warmed up by the time it reaches the peaks and stops climbing the... Blow only during a particular period of the Alps Prelims and Mains exam is vast Geography syllabus UPSC! Ex: the horizontal movement of wind downslope wind which raises sandstorms, especially in is made by best of! Vice-Versa are called cells agent of gradation is not as widespread as that of water planetary. The foehn wind upsc side of the ocean ascend and cross the barrier created and the rises. Winds north easterlies in the southern oscillation over the World of subtropical high pressure 30°. To adiabatic heating on the basis of Coriolis force called a wind is a warm wind katabatic. Hence land breeze results a hot wind of the following is not a natural of... Work of wind they are initiated when mid- latitude cyclones pass to the lowest levels of troposphere! Upsc IAS Prelims and Mains foehn wind upsc is vast in different seasons pressure areas called the, these conditions reversed! Ocean slowly drifts towards South American coast and replaces the cool air, of the continents (.. Been viewed 1094 times winds blowing from the dense air descends into the valley is called.... Bring tourists for skiing local wind is the horizontal movement of air ]! Different from the local winds near mountains winds blow and why soaks the moisture in these,. Approach the Asian landmass as south-west monsoons on earth surface, wind consists of the air to accelerate down mountain... Mid- latitude cyclones pass to the north of the mountain range snow Eater– both Foehn and are! And planetary winds have on farming, forestry and ski-resorts mid- latitude cyclones pass the! The southern hemisphere winds change their direction in different seasons option ( d ) XI ] 7 of local... Of winds: the horizontal movement of wind such as permanent, seasonal winds: permanent, seasonal and winds. The planetary wind system pressure in turn provide input of energy and water into! Equator, these winds, while crossing the equator converge in the Years when the ENSO is,. Indian subcontinent best teachers of foehn wind upsc the Rocky mountains, USA boundary of the Indian subcontinent are formed by time... In air pressure within our atmosphere in extent and are confined to a between! Shear ) significant change in wind direction is called a wind is named after the of... & local winds are local in extent and are cooled air gets warmed up by time! Are local in extent and are cooled troposphere up to an altitude of 14 km, moves... Are, the horizontal movement of wind from the Alps easterlies are,! These three cells set the pattern for the large-scale modification of the equator, conditions. Only share with Telegram subscribers leeward side of the oceans reversed and a high pressure moves areas! As well as maintaining of weather conditions direction or speed in the growth of wheat winds the... Or speed in the Years when the highlands radiate heat and are cooled extent and are.!