The polar vortex spins in the stratosphere, a layer of the atmosphere 10-48 km above the ground and above the troposphere, where most familiar weather patterns develop. Thus, global warming is also a cause for cold spans from distorted polar vortex. Context: Weather experts are predicting an extremely cold January and February for the northeastern United States, much of northern Europe and parts of Asia. Today, Insights is synonymous with UPSC civil services exam preparation. Change ), You are commenting using your Google account. ( Log Out /  The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. ( Log Out /  During winter this heat is released as latent heat into the atmosphere creating high pressure belts in the arctic, spurring winds that can disrupt the polar vortex. Polar vortices have been in the news ever since the northern hemisphere saw its coldest period during the winter of 2013 – 2014. An ozone hole is the thinning of the ozone layer boosted in size by colder temperatures. Usually, when the vortex is strongest, cold air is less-likely to plunge deep into North America or Europe. (See figure). There are two polar vortices in the Earth’s atmosphere, overlying the North and South Poles. What is causing the distortion in Polar Vortex? And sometimes it continues up to the Mesosphere. Aspirants of UPSC Civil Services Prelims 2021 exams can solve these questions to test their knowledge on this topic of Geography. The stratospheric polar vortex is an area of high-speed, cyclonically rotating winds around 15 km to 50 km high, poleward of 50°, and is strongest in winter. Scribd es el sitio social de lectura y editoriales más grande del mundo. Why is it unusually foggy over north India this winter? Attiguppe , Bengaluru - 560040. A polar vortex is an upper-level low-pressure area lying near one of the Earth’s poles. SOURCES: DownToEarth | Current Affairs News Analysis for UPSC | 7th Jan 2021 Above Village Hyper Market, Chandralyout Main Road, Mains level : Ozone hole healing. Polar vortex is a low-pressure system where strong cold air masses circulate in counter-clockwise direction, 2 meters over the poles (both North and South). The system has a whirling mass of cold air circulating in the mid- to upper-levels of the atmosphere, flowing counter-clockwise. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. In other words, it forms a wall that protects the mid-latitudes from cold Arctic air. The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles. Sometimes during the winter, this system is distorted resulting in the cold upper air mass being pushed farther south than usual. The Polar vortex weakens, partly due to warming temperatures in the stratosphere. The jet streams interact with the polar vortex pushing the cold air downwards south. What are the basic values enshrined in the Preamble of our Constitution? Enter your email address to subscribe to this blog and receive notifications of new posts by email. 8) For Prelims and Mains: What is Polar Vortex and its effects on weather patterns. How relevant are these values in the present time? A polar vortex is a large pocket of very cold air, typically the coldest air in the Northern Hemisphere, which sits over the polar region during the winter season. This happens fairly often and can be associated with outbreaks of cold temperatures in the United States. When this happens, the stratosphere warms sharply in an event known as sudden stratospheric warming, in just a few days, miles above the Earth’s surface. Usually the upper cold air mass is trapped in the poles due to existence of low-pressure belt at the poles. In other words, it forms a wall that protects the mid-latitudes from cold Arctic air. It may. In this decade, the polar vortex has also been blamed on extremely cold weather in the United States in 2014 and the infamous ‘Beast from the East’, the blast of cold weather that blew from Siberia towards western Europe and the UK in February and March of 2018. The polar vortex spins in the stratosphere. Climatology is among the most necessary parts of the UPSC Geography Prelims syllabus. Results from the spatial patterns o… The polar vortex is … The polar vortex spins in the stratosphere. Usually, when the vortex is strongest, cold air is less-likely to plunge deep into North America or Europe. 3. During winter, the polar vortex at the North Pole expands, sending cold air southward. According to recent studies, with the warming of planet the jet stream over North America and Europe, is slowing and becoming wavier. El-Nino: pressure gradient cell, Walker Cell; South Oscillation or ENSO Six hours saved every year are added to make one day (24 hours) over a … Recently the EU’s Copernicus Atmosphere Monitoring Service (CAMS) announced that a hole in the Arctic ozone layer, believed to be the biggest reported, has closed. What causes a polar vortex? Usually the upper cold air mass is trapped in the poles due to existence of low-pressure belt at the poles. Because of the pressure difference between the Arctic and mid-latitudes, air flows into low pressure and this confines the cold air to high latitudes closer to the Arctic. The motion of the earth around the sun in its orbit is called revolution. A polar vortex is an area of low pressure—a wide expanse of swirling cold air—that is parked in polar regions. Polar Vortex is a During summers as the ice retreats, specific heat is absorbed by the ocean that lies under the ice. You possibly can count on no less than 3-4 questions within the Prelims ... Ques 3: Take into account the next statements relating to Polar Vortex: It’s brought on by a blast of Antarctic air, which is a results of a “polar vortex” occasion. ; The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles. Change ), You are commenting using your Facebook account. A Polar Vortex starts from the upper part of Troposphere and extends into the Stratosphere. In this video we'll learn what is polar vortex, i'll explain how it is formed and when it is dangerous. Insights has redefined the way preparation is done in UPSC civil service exam, Nanda Ashirwad Complex, 3rd Floor, When distorted, the polar vortex will expand, sending weakened cold air southward with the jet stream. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. GK, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services. Remembering such … As the most prominent feature of the polar stratosphere, polar vortex results in widespread changes in the climate system, especially in the ozone variation. The extreme cold has been caused by a blast of Arctic air, which in turn is a result of what is known as a “polar vortex” event. Usually, when the vortex is strongest, cold air is less-likely to plunge deep into North America or Europe. The polar vortex is circulation of strong, upper-level winds that normally surround the northern pole in a counter clockwise direction a polar low pressure system. It has gotten 1 views and also has 0 rating. A polar vortex is a wide expanse of swirling cold air, a low pressure area, in polar regions During winters, the polar vortex at the North Pole expands, sending cold air southward. The reason being given is the polar vortex. Polar vortex: meaning and properties, formation, Cold wave: polar vortex, Polar vortex in USA 2014; Polar stratospheric clouds; Ozone depletion north pole and South Pole, Montreal Protocol and its implementation. Significance of militants’ surrender in Assam and history of Karbi insurgency. The polar vortex spins in the stratosphere, a layer of the atmosphere 10-48 km above the ground and above the troposphere, where most familiar weather patterns develop. In this study, the linkage between polar vortex and ozone depletion in Antarctic stratosphere during the period 1979–2016 is investigated; we calculated the averaged total column ozone within the polar vortex based on the vortex edge (−28.8 PVU PV contour) instead of the geographical region defined by latitude and longitude. 2. The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles.It always exists near the poles, but weakens in summer and strengthens in winter. 1. The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. Change ), You are commenting using your Twitter account. ( Log Out /  Polar Vortex, Ozone Depletion, Polar Stratospheric Clouds UPSC Video | EduRev video for UPSC is made by best teachers who have written some of the best books of UPSC. Polar Vortex forms a wall that protects the mid-latitudes from cold Arctic air. Cleocin Gel Lee County Augmentin Kentucky Xeloda cost anthony ingraffea hydrofracking wenck general multigrade paper vs graded spain 2010 world cup. India’s UNSC moment Editorial 26th Jan’21 TimesOfIndia. The polar vortex is a well-documented, long-existing pattern, but some scientists say climate change could be making it unstable, with potentially serious consequences. The warming weakens the polar vortex, shifting its location somewhat south of the pole or, in some instances, ‘splitting’ the vortex up into ‘sister vortices’. The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles. The warming weakens the polar vortex, shifting its location somewhat south of the pole or, in some instances, ‘splitting’ the vortex up into ‘sister vortices’. Ice floes fill the Hudson River as the New Jersey waterfront is seen during sunset on January 9, 2014 in New York City. A record-breaking cold wave has swept through the US Midwest, with 22 states hitting sub-zero temperatures. Polar vortex is a low-pressure system where strong cold air masses circulate in counter-clockwise direction, 2 meters over the poles (both North and South). News. The strong polar vortex is the more common state of the vortex which creates strong low pressure in the Arctic region. Unusually foggy over North India this winter South poles editoriales más grande del mundo on! Үед polar vortex upsc медаль үнэгүйдэж, олон хүмүүсийг бухимдуулж байна ), You are commenting your. 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