Planetary Winds: A major role in ocean currents is played by frictional drag of surface water by planetary winds. For example, within the tropics, the trade winds blow from the east and hence, north equatorial and south equatorial currents flow east to west. They can move from mild to extreme winds in just hours. Planetary winds blow in the same direction throughout the year, while the other types of winds get modified due to certain reasons. Winds are grouped under planetary, periodic and local winds. The winds blowing almost in the same direction throughout the year are called prevailing or permanent winds. Both UPSC prelims and IAS mains exam GS paper 2 contains these topics. The winds in the upper atmosphere, 2 - 3 km above the surface, are free from frictional effect of the surface and are controlled by the pressure gradient and the Coriolis force. UPSC Prelims is the screening stage of the Civil Services Exam which is conducted by the Union Public Service Commission every year. Winds tend to blow from high pressure belts to low pressure but due to Earth’s rotation are deflected to right in north hemisphere and left in south hemisphere - “Ferrel’s law”. The pattern of the movement of the planetary winds is called the general circulation of the atmosphere. These winds are in the form of large air masses which are being formed due to the earth’s rotation along with the shape of the earth and the sun’s heating power. UPSC CSE - GS. Goldy on [Download] UPSC Prelims 2020 General Studies Paper1: Sorted Topicwise /Subjectwise. But due to Coriolis force their direction is deflected. Hence this theory explains the existence of monsoon not by the temperature, contrasts between land and sea, but by the annual migration of thermally produced planetary winds and pressure belts. Climatology portion of geography includes topics like weather, climate, temperature, humidity, pressure belts, atmospheric circulation including winds, cyclones and monsoons etc. Winds like Loo, Mistral, Foehn, Bora. Written by: ForumIAS Posted on September 6th, 2020 Last modified on September 6th, 2020 Comments. Trade winds: These winds are mainly caused due to the Coriolis effect and Ferrel’s law. New developments if any: UPSC has the habit of asking questions regarding latest developments in the field. So, usually surface temperatures determine where the Jet Stream will form. Planetary winds: These winds blow in the same direction throughout the year. ... Planetary Winds… This stage is officially known as the Civil Services (Preliminary) exam but in common parlance, aspirants refer to it as UPSC Prelims or IAS Prelims. Types Of Winds. Thus, they are more localised in their extent and cover limited horizontal and vertical dimensions and confined to the lower levels of the troposphere. This is very important from UPSC point of view. On the other hand, winds with seasonal changes in their directions are called seasonal winds (e.g., monsoon winds). Planetary Winds These winds are also known as Permanent/ Primary or Prevailing Winds. UPSC CAPF Syllabus 2020: Get here latest Exam Pattern and detailed syllabus for UPSC CAPF Assistant Commandant (AC) Written Exam and Interview. (A) Westerlies, Trade, Polar wind (B) Trade, Westerlies, Polar wind (C) Trade, Polar wind, Westerlies (D) Polar wind, Westerlies, Trade Ans: B 8. The Planetary winds. The rain-fed and rain-shadow areas are the characteristics of the (A) Cyclonic rainfall (B) Convectional rainfall Find out the correct sequence of planetary winds found from the equator to pole. Explain how local winds are different from planetary winds. Good Morning Friends, We are Posting Today’s Prelims Marathon . The effect of the earth’s rotation (Coriolis Force) tends to deflect the direction of these winds. 7 thoughts on “The MCQ Factory : Topicwise MCQs for UPSC” Emerson says: November 1, 2018 at 5:31 pm . Thus, the wind that reaches the land brings down the temperature and causes heavy rainfall. During winter due to southward shifting of pressure and wind belt the planetary system of northeast trade winds is established over the region. Monsoon is seasonal winds while local winds below generally on diurnal basis. Body – Explain the impact that the shift in pressure belts has on Mediterranean type of climate, regions lying between 60°-70° latitudes are characterized by two types of winds in a year because of shifting of pressure and wind belts, Monsoon climate is the result of the shifting of pressure and wind belts. In their passage across oceans, they gather more moisture and bring… The Jet Stream is a geostrophic wind blowing horizontally through the upper layers of the troposphere, generally from west to east, at an altitude of 20,000 - 50,000 feet. Thus, a south wind is deflected as a south-west wind in the northern hemisphere and as a south-east wind in the southern hemisphere. Aug 11, 2020 • 1h 2m . The trade winds are most regular winds of all k… Comments. Planets A celestial body moving in an elliptical orbit around a star is known as a planet. Winds blowing over a warm current become warm and at the same time, pick up moisture. In the northern hemisphere, they blow towards the equatorial low and called North East Trade Winds. The western coast of Europe is an example of such a region. Wind System:-Download PDF Here. Topic: Salient features of world’s physical geography. Most of the currents of the world tends to follow the direction of planetary winds. Trade Winds:- Trade winds are most regular of all the planetary winds and in general they blow with great force and in constant direction. Radhamohan Jena. This is known as the Ferrell’s law. This implies that Trade winds blow from North east towards equator in Northern hemisphere and South East Towards equator in southern hemisphere.It has been shown in the following graphics. ... Outback, Trade Winds, upsc. Hindi Geography. Cut-off Prediction/speculation = woh mein kartaa nhi. Local Winds. Daily Quiz: UPSC Prelims Marathon (Map Based Questions) – September 6, 2020. Category : UPSC . 7. Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., 1. Topicwise MCQs for Economy for UPSC. I pinged you on the Whatsapp number some 30Hrs back.. The optional papers are divided into two papers - Papers I & II carrying 250 marks each. Still no response.. 19k watch mins. Geomorphology for General Studies UPSC Civil Services 1. These generally originate in the Mediterranean region and travel over Iran, Iraq, Afghanistan and Pakistan to enter India loaded with moisture. Trade Winds:- Trade winds are most regular of all the planetary winds and in general they blow with great force and in constant direction. Air expands when heated and gets compressed when cooled. Prelim special: Pressure belts and global planetary winds. Other articles where Planetary wind system is discussed: Pacific Ocean: Climate: …Pacific conform closely to the planetary system—the patterns of air pressure and the consequent wind patterns that develop in the atmosphere of the Earth as a result of its rotation (Coriolis force) and the inclination of its axis (ecliptic) toward the Sun. Free classes & tests. Based on the above parameters, wind can be classified into different types: Planetary winds: These winds are also known as prevailing winds and are caused due to the difference in air pressure from one latitude to another latitude. For the UPSC … Interior of The Earth ... • Primary winds or Prevailing Winds or Planetary Winds • Secondary or Periodic Winds • Land Breeze and Sea Breeze • Valley Breeze and Mountain Breeze • Tertiary or Local Winds Answer: Western Disturbances are low-pressure systems (temperate cyclones) embedded in the Westerlies, the planetary winds that flow from west to east between 30 o - 60 o latitude. Giving examples, highlight the role of local winds in influencing climate, agriculture and livelihood in various regions. A) Trade winds done clear. Local winds are those that are created as a result of scenery such as mountains, vegetation, water bodies and so on. Types of winds is one one the most important topics in geography. Climatology UPSC: Comprehensive Guide for UPSC Aspirants By Lotus Arise / October 1, 2019 September 30, 2020 Hey Dosto, In this blog post we will discuss How to approach Climatology UPSC for Geography Optional . For example, last year UPSC asked a question on Monsoon prediction techniques. B) Western winds done clear. Such winds bring down the temperature of the land like the Kuroshio (warm) current, which flows along the east These are also called as invariable or planetary winds because they involve larger areas of the globe. What is a Jet Stream? Local Winds are produced due to local variability in temperature and pressure condition. ; Jet Streams develop where air masses of differing temperatures meet. Which of the following conditions … Since trade winds blow from the subtropical latitudes to the warmer equatorial latitudes, they have great capacity of holding moisture. UPSC: The UPSC IAS Mains Optional papers carry a total weightage of 500 marks. We know that winds tend to blow from the high-pressure centres to the low-pressure centres. Since trade winds blow from the subtropical latitudes to the warmer equatorial latitudes, they have great capacity of holding moisture. Atmospheric pressure . Answerkeys pending. 1. Primary Winds or Prevailing Winds or Permanent Winds These are the planetary winds which blow extensively over continents and oceans. There was no response.. then again on telegram.. Which one of the following is considered as an interruption of the planetary wind system? When isobars are straight and when there is no friction, the pressure gradient force is balanced by the Coriolis force and the resultant wind blows parallel to the isobar. The Planetary wind system of the world accompanies the presence of the High and Low-Pressure Belts. It is really important for the student to undestand the basic concept of this topic as both prelims and mains give equl importance to this topic. This results in variations in the atmospheric pressure. We will learn pressure blets of the world like Equatorial low pressure or doldrums and trade easterly and westerly winds etc. The general distribution of winds in the lower atmosphere is called as Planetary winds. Consider for example, while writing an answer regarding trade winds, you must be able to draw a rough map showing the prevalence of trade winds on the globe. In the Southern hemisphere they blow towards the equatorial low and become the South East Trade winds. Trades wind blow out from the Subtropical High Pressure belts. C) Monsoon winds … There are three main planetary winds that constantly blow in the same direction all around the world, the Trade Winds or the Tropical Easterlies, the Westerlies and the Polar Winds or the Polar Easterlies. Good examples of local winds are sea breezes and land breezes, and mountain and valley breezes. 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