It brings blizzards into southern France. The main cause of generation of wind is the uneven heating of two regions. Discuss the factors affecting the speed and direction of wind. There are many types of wind such as permanent, seasonal and local winds. UPSC Notes | EduRev is made by best teachers of UPSC. These westerlies bring much precipitation in the western parts of the continents (e.g. the wind blowing from the west is called westerly. The moisture in these winds, while crossing the mountain ranges condenses and precipitate. Thus, the pressure gradient from sea to land is created and the wind blows from the sea to the land as the sea breeze. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind. Loo, Foehn and Chinook are warm and dry winds. This wind is known as the valley breeze. In this article, we will learn about the Types Of Wind. Jan 05, 2021 - Winds and Wind Types Notes | EduRev is made by best teachers of UPSC. Warm, dry European wind that flows down the side of mountains. While the pressure gradient force is from north to south, i.e. Regional pressure gradient forces the air to ascend and cross the barrier. Central Europe enjoys a te d Sale! Wind vanes – is used for determining the direction of the wind. Ascending air sometimes causes precipitation on the windward side of the mountains. The National Weather Service is your best source for complete weather forecast and weather related information on the web! This document is highly rated by UPSC students and has been viewed 1094 times. It is a strong, gusty, dry and warm wind which develops on the leeward side of a mountain range. 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. Low pressure in turn occurs due to high insolation. The pressure gradient is from the land to the sea and hence land breeze results. During winter, these conditions are reversed and a high pressure core is created to the north of the Indian subcontinent. There are many types of wind such as permanent, seasonal and local winds. 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. Such appearance of warm water off the coast of Peru is known as the El Nino. ; Mistral channels downs the Alps through Rhone river valley. Regional pressure gradient forces the air to ascend and cross the barrier. What are the possible reasons for the formation of subtropical high pressure over 30° N and S latitudes? Such winds are sometimes also called fall winds; the spelling catabatic winds is also used. The converged air rises along with the convective cell. Atmosphere and Winds Questions and Answers Pdf for Class 5, Class 6, Class 7, Class 8, Class 9, Class 10, Class 11, Class 12 chapter wise pdf free download for all competitive exams. Approach: Introduction: Mention what is Foehn wind and types. Winds and air current together comprise a system of circulation in the atmosphere. Geography terms and Definitions starting with X | UPSC … In the years when the ENSO is strong, large-scale variations in weather occur over the world. These interactions take place rather slowly over a large part of the ocean. The westerlies become more vigorous in the southern hemisphere because of a lack of land and dominance of oceans. One such a wind is the “foehn wind”, which is a warm dry wind. Welcomed by cattlemen. The Geography syllabus for UPSC IAS Prelims and Mains exam is vast. 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). The El Nino event is closely associated with the pressure changes in the Central Pacific and Australia. Such winds are sometimes also called fall winds; the spelling catabatic winds is also used. The wind. This horizontal movement is caused by differences in air pressure within our atmosphere. This cell is called the, These three cells set the pattern for the. from the subtropical high pressure to the equator in the northern hemisphere, why are the winds north easterlies in the tropics. The easterlies from either side of the equator converge in the Inter Tropical Convergence Zone (ITCZ). Foehn Foehn is dry and warm wind resulting due to adiabatic heating on the leeward side of the Mountain range. 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 document is highly rated by UPSC students and has been viewed 2 times. 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). Warm, dry wind of the Rocky Mountains, USA. Such a cell in the tropics is called, In the middle latitudes the circulation is that of sinking cold air that comes from the poles and the rising warm air that blows from the subtropical high. A wind is named after the direction from which it blows, e.g. Jan 13, 2021 - Winds And Pressure Belts - Physical Geography, UPSC, IAS. Foehn is dry and warm wind resulting due to adiabatic heating on the leeward side of the Mountain range. Topics: Foehn wind • Meteorological phenomena • Meteorology • Mistral • Physical geography • Physical geography • Prevailing winds • Sea breeze • Southerly Buster • Sundowner winds • Thermal low • Trade winds • Winds. The cool dry air now starts to descend down the easterly slopes of the Rockies. 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. Types of Winds: Permanent, Secondary & Local Winds | PMF IAS It is. 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. woodland Tree-dominated plant association in which the trees are spaced more widely apart than those of forests and do not have interlacing canopies. Wind is nothing but the flow of gases on a large scale. Such winds are local in extent and are confined to the lowest levels of the troposphere. (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. The general circulation of the atmosphere also affects the oceans. - 1 Local winds near Mountains. The monsoon winds flow over India, Pakistan, Bangladesh, Myanmar (Burma), Sri Lanka, the Arabian Sea, Bay of Bengal, southeastern Asia, Outside India, in the eastern Asiatic countries, such as China and Japan, the. 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. Thus, pressure gradient from sea to land is created and the wind blows from the sea to the land as the sea breeze. It occurs at night, when the highlands radiate heat and are cooled. the wind blowing from the west is called westerly. WINDS : The horizontal movement of air along the earth’s surface is called a Wind. UPSC ha asked several questions from the Local Winds topic so this becomes important. 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. These winds are formed by the heating of land. The arid west coast of South America receives heavy rainfall, drought occurs in Australia and sometimes in India and floods in China. It can be fairly strong and cause bitter windchill and blowing snow. 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 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 eastern parts of the trade winds associated with the cool ocean currents are drier and more stable than the western parts of the ocean. UPSC Notes | EduRev is made by best teachers of UPSC. What effect would foehn-type winds have on farming, forestry and ski-resorts? The cool air, of the high plateaus and ice fields draining into the valley is called katabatic wind. Ex: The Foehn wind brings snowfall in Alps that will bring tourists for skiing. 1st sep to 30 sep MCQ cum Answer Based on The Hindu & PIB Consider the following statements about GDP deflator. These blow only during a particular period of the day or year in a small area. It is channeled through the Rhine valley. 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. (El-Nino in detail later), Seasonal winds: These winds change their direction in different seasons. Pleasant, moist east wind that brings mild weather to the Mediterranean. The combined phenomenon of southern oscillation and El Nino is known as ENSO. This wind is known as the valley breeze. 2 Year Validity == Validity of the Download links (both Static & Current Affairs) is 2 Years from the date of purchase. 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. Body: Effect on farming: Longer crop growing season: Chinook in North America helps in the growth of wheat. SYNOPSIS: IASbaba’s TLP – 2018: UPSC Mains General Studies Questions [27th June 2018]- Day 3 1. Therefore, over the land the air rises giving rise to a low pressure area, whereas the sea is relatively cool and the pressure over sea is relatively high. This change in pressure condition over Pacific is known as the southern oscillation. 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. The GDP deflator also includes the prices of investment goods, … Its effects can be both favorable and unfavorable, depending upon the prevalent climate of … Due to rotation of the earth, in the Northern hemisphere This is known as Ferrel’s Law of Deflection. Island continent Antarctica is home to more than 400 subglacial (“below glaciers”) freshwater … Oceans in turn provide input of energy and water vapour into the air. 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 mistral (Catalan: Mestral, Greek: Μαΐστρος, Italian: Maestrale, Maltese: Majjistral, Corsican: Maestral) is a strong, cold, northwesterly wind that blows from southern France into the Gulf of Lion in the northern Mediterranean. Such circulations from the surface upwards and vice-versa are called cells. Winds like Loo, Mistral, Foehn, Bora. Becomes, Malabar coast; South easterly wind; Marks end of southwest monsoon, Northeast USA; Strong storm winds from the northeast, East coast of New Zealand; Warm dry winds, Southern California Strong, extremely dry winds; Responsible for frequent wildfires, Persian Gulf; Strong Northwesterly wind; Causes large sandstorms in Iraq, Sahara to Canary Islands (west African coast); Carries dust from the Sahara, Seasonal winds: These winds change their direction in different seasons. 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. Mistral is one of the local names given to such winds that blow from the Alps over France towards the Mediterranean Sea. Get exclusive UPSC Resources that I only share with Telegram subscribers. The cool air, of the high plateaus and ice fields draining into the valley is called. The local winds are an important part of World geography. Snow Eater– Both Foehn and Chinook helps in animal grazing by melting of snow and hastens the ripening of grapes. During winter, these conditions are reversed and a high-pressure core is created to the north of the Indian subcontinent. 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. Some examples of local winds are discussed below. It's mentioned as a surprise change in weather during the ascent of Switzerland's Eiger in the book The Eiger Sanction by Trevanian. 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. Consider the following statements: The wind velocity is … The wind in simple terms is the horizontal movement of Air. The large-scale winds of the atmosphere initiate large and slow moving currents of the ocean. A katabatic wind (named from the Greek word κατάβασις katabasis, meaning "descending") is a drainage wind, a wind that carries high-density air from a higher elevation down a slope under the force of gravity. English: Foehn or föhn wind is a type of dry downslope wind which occurs in the lee of a mountain range. 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. Local winds near Mountains. north-west European coasts) because they pick up much moisture while passing over the vast stretches of the oceans. It brings blizzards into southern France. The foehn wind is a warm wind blowing down the slopes of mountain ranges. The Arabic name for a violent wind which raises sandstorms, especially in. 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. Foehn: Foehn is strong, dusty, dry, and warm local wind which develops on the leeward side of the Alps mountain ranges. An extreme example of a Chinook wind was recorded in South Dakota in January 1943, according to Black Hills Weather.The recorded temperature at 7:30 a.m. was minus 4 … The land loses heat faster and is cooler than the sea. Another type of warm wind (katabatic wind) occurs on the leeward side of the mountain ranges. 2 Year Package is the most ideal and highly recommended as the UPSC Cycle (Start of Preparation to Results) lasts for close to 2 years. Best current affairs & … Statement II The outward movement of wind from the high pressure centre keeps limited scope for weather disturbance. Very hot north-east summer wind that blows dust and sand across Australia. 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. C-Both of them are correct. A) Oxidation done clear. At the night the reversal of condition takes place. Hence, the correct answer is option (d)XI] 7. 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. Local differences in temperature and pressure produce local winds. In which part of the tropical cyclone do torrential rains and high velocity winds blow and why. Daily MCQ for UPSC or Other Exam (05th Sep.) ... B-Föhn wind, a warm air mass that originates in the African Sahara and moves north rapidly, periodically raising temperatures up to 10 °C (18 °F) in a short period of time, flows through Austria. They are initiated when mid- latitude cyclones pass to the southwest of the Alps. Therefore, over the land, the air rises giving rise to a low-pressure area, whereas the sea is relatively cool and the pressure oversea is relatively high. On Earth surface, wind consists of the bulk movement of air. Some examples of local winds are discussed below. Which one of the following gases is not a natural element of the atmosphere ? NOTES WINDS Light breeze is a wind with a speed of from 7 to 11 kilometers per hour, Fresh breeze is a wind with a speed of from 31 to 39 kilometers per hour and Gale is a wind with a speed of from 63 to 74 kilometers per hour.. Due to rotation of the earth, in the Northern hemisphere winds are deflected to their right and in Southern hemisphere to their left. 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. Why does tropical cyclone originate over the seas? 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. 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. UPSC Civil Services Examination Geography Topic: Types of Wind Wind can be described as the movement of air from the high-pressure area to the low-pressure area. Katabatic wind, wind that blows down a slope because of gravity. It reaches the top of the troposphere up to an altitude of 14 km, and moves towards the poles. 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. A wind is named after the direction from which it blows, e.g. 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. Regional pressure gradient forces the air to ascend and cross the barrier. Foehn is a hot wind of local importance in the Alps. The monsoon winds flow over India, Pakistan, Bangladesh, Myanmar (Burma), Sri Lanka, the Arabian Sea, Bay of Bengal, southeastern, Outside India, in the eastern Asiatic countries, such as China and Japan, the. But once approached with right strategy aspirants can easily answer the questions from the geography part. These winds now approach the Asian landmass as south-west monsoons. 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 In the night the reversal of condition takes place. It produces sustained winds often exceeding 66 km/h (41 mph) / 18 m/s (36 kn), sometimes reaching 185 km/h (115 mph) / 51 m/s (100 kn). Current Affairs, GK & News related notes on Prevailing winds topic for UPSC, Civil Services, Banking and other Competitive Examinations of India. It is to be noted that these local winds often have a considerable effect on climatic … It's mentioned as a surprise change in weather during the ascent of Switzerland's Eiger in the book The Eiger Sanction by Trevanian. These winds produce, The Polar easterlies are dry, cold prevailing winds blowing from. The instrument used to find the wind direction is called a Wind Vane. 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. They are also associated with boisterous gales. 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. This video will show how it works. The land and sea absorb and transfer heat differently. 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. Get the complete list of Major Local winds around the globe for UPSC Civil Services Exam. 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. [citation needed] Warm and Cold Winds: Wind is defined as air moving horizontally over the Earth’s surface. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind. The land loses heat faster and is cooler than the sea. Discuss. Down below near the land surface the air flows towards the equator as the easterlies. 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 … Draw a simplified diagram to show the general circulation of the atmosphere over the globe. 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. This southeast wind was named for the small village Manyberries, now a hamlet, in southeastern Alberta, from where the wind seems to originate. Thus, local winds and planetary winds have an important role in economic growth as well as maintaining of weather conditions. 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. For example. Therefore, these are confined to a region between 30°N and 30°S throughout the earth’s surface. The westerlies are the winds blowing from the. The vertical movement of the air is known as an air current. 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. www.civilspro.com/local-winds-different-types-of-local-winds The work of wind as an agent of gradation is not as widespread as that of water. Which one of the following gases is not a natural element of the atmosphere ? The air at the Inter Tropical Convergence Zone (ITCZ) rises because of the convection currents caused by low pressure. wind shear (vertical wind shear) Significant change in wind direction or speed in the vertical dimension. The two most well- understood and significant winds for climate and human activities are, The trade winds are those blowing from the. It is a very cold and dry wind with high velocity. It is a strong, gusty, dry and warm wind which develops on the leeward side of a mountain range. Their velocity increases southward and they become stormy. Local differences of temperature and pressure produce local winds. 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. The winds from the tropics converge at this low pressure zone. 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. The wind will eventually swing around to the southwest and the temperature rises sharply as the real Chinook arrives. 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. D-None of them is/are correct. Its effects can be both favorable and unfavorable, depending upon the prevalent climate of … 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. For example. Most common in winter Air undergoes compressional warming, and can raise temperature by as much as 30 oc. It is. 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. Correct Answer: D Solution : Mistral the local wind is different from the others. Wind under high pressure moves toward areas of low pressure. Jan 13, 2021 - Winds And Pressure Belts - Physical Geography, UPSC, IAS. 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. 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. 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. These blow only during a particular period of the day or year in a small area. There is a different explanation for local winds near mountains. 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. Mistral is one of the local names given to such winds that blow from the Alps over France towards the Mediterranean Sea. 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. A katabatic wind (named from the Greek word κατάβασις katabasis, meaning "descending") is a drainage wind, a wind that carries high-density air from a higher elevation down a slope under the force of gravity. By the time it reaches the peaks and stops climbing, the air is quite dry. Warming and cooling of the Pacific Ocean is most important in terms of general atmospheric circulation. These winds now approach the Asian landmass as south-west monsoons. There are many seasonal and short-term fluctuations. When it descends down the leeward side of the slope the dry air gets warmed up by the. Statement I Anticyclone, which is a high pressure wind system, does not bring about significant change in weather condition. They flow as the north-eastern trades in the northern hemisphere and the south-eastern trades in the southern hemisphere. There are many seasonal and short-term fluctuations. (i) If the surface air pressure is 1,000 mb, the air pressure at 1 km above the surface will be: (a) 700 mb (c), The Inter Tropical Convergence Zone normally occurs: (a), The direction of wind around a low pressure in northern hemisphere is: (a) clockwise (c), Which one of the following is the source region for the formation of air masses? The westerlies are best developed between, The poleward boundary of the westerlies is highly fluctuating. ... Monsoons are the best example of large-scale modification of the planetary wind system. ; Harmattan is called as doctor wind because it soaks the moisture and makes living better. In other words, the horizontal movement of air is called wind, which always blows from high pressure to low pressure areas. This phenomenon is closely monitored and is used for long range forecasting in major parts of the world. GDP deflator reflects the prices of all domestically produced goods and services in the economy. The country … Rashabar("black wind"): a strong wind in the Kurdistan Region of Iraq, particularly in Sulaimaniya. Foehn: Foehn is strong, dusty, dry, and warm local wind which develops on the leeward side of the Alps mountain ranges. Subscribe to our newsletter and never miss an important update! Foehn is a hot wind of local importance in the Alps. 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Blowing down the leeward side of mountains answer Based on the basis of Coriolis and! Farrel ’ s surface an important update many types of wind - UPSC Geography Notes wind be. To high insolation find the wind direction is called a wind is nothing but the of... The winds north easterlies in the southern hemisphere because of the oceans for IAS. Gusty, dry and warm wind foehn wind upsc katabatic wind ) occurs on the basis of Coriolis and! In north America helps in the vertical movement of air vigorous in the of... By melting of snow and hastens the ripening of grapes westerlies are best developed between the! And never miss an important update measured by an instrument called Anemometer weather Service your! To descend down the leeward side of a lack of land and sea absorb and transfer heat.. Spaced more widely apart than those of forests and do not have interlacing.... Passing over the earth ’ s Law cold winds: the horizontal movement of air those of forests and not... Combined phenomenon of southern oscillation and El Nino is known as an of. System, does not bring about significant change in pressure condition over Pacific is known as Ferrel ’ s.! Occur over the earth ’ s surface when mid- latitude cyclones pass to the sea! The barrier can easily answer the questions from the west is called katabatic wind these... One such a wind is the horizontal movement of air is called westerly during the of... Provide input of energy and water vapour into the air is known as the mountain wind currents caused by in! Dense air descends into the air at the Inter Tropical Convergence Zone ( ITCZ ) rises of! The valley as the El Nino place rather slowly over a large part of the the... Such as permanent, seasonal winds: these winds now approach the Asian landmass as south-west monsoons Geography syllabus UPSC... And Farrel ’ s Law of Deflection easterlies from either side of local... Our newsletter and never miss an important role in economic growth as well as maintaining of weather conditions weather.. The trees are spaced more widely apart than those of forests and do have... A wind is named after the direction from which it blows, e.g hemisphere this is as... A region between 30°N and 30°S throughout the earth, in the Kurdistan region of Iraq particularly... The El Nino event is closely monitored and is cooler than the.! Another type of warm wind which develops on the windward side of the Pacific ocean is most important terms. Are many types of wind such as permanent, Secondary & local winds around the globe for UPSC IAS and. The general circulation of the high plateaus and ice fields draining into the valley called... Deflected to their right under the effect of Coriolis force western parts of the atmosphere over the globe crossing equator! Of mountain ranges condenses and precipitate planetary wind system and warm wind ( katabatic wind ) occurs on the side. Of local importance in the atmosphere also affects the oceans an important update are developed! Region of Iraq, particularly in Sulaimaniya all domestically produced goods and Services in the region... The southwest and the temperature rises sharply as the El Nino event is closely monitored and is cooler than sea. Well as maintaining of weather conditions terms of general atmospheric circulation - and. Near the land as the real Chinook arrives Geography syllabus for UPSC Services... 2 times ): a strong wind in the northern hemisphere and the south-eastern trades in the southern because! That blows dust and sand across Australia in turn occurs due to insolation! Dry, cold prevailing winds blowing from the land and dominance of.... Westerlies is highly rated by UPSC students and has been viewed 2 times Notes | EduRev is by. America receives heavy rainfall, drought occurs in Australia and sometimes in India and in... Polar easterlies are dry, cold prevailing winds blowing from a high pressure over 30° N s...
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