{"id":23455,"date":"2024-05-17T08:00:32","date_gmt":"2024-05-17T02:30:32","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=23455"},"modified":"2025-04-07T02:39:02","modified_gmt":"2025-04-06T21:09:02","slug":"prefire-polar-mission","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/prefire-polar-mission\/","title":{"rendered":"PREFIRE Polar Mission"},"content":{"rendered":"<h2>About PREFIRE Polar Mission:\u00a0<\/h2>\n<ul>\n<li>The <strong>Polar Radiant Energy in the Far-InfraRed Experiment(PREFIRE)<\/strong> polar mission consists of <strong>twin satellites<\/strong>, each carrying one instrument and measuring the poles about six hours apart.<\/li>\n<li><strong>Objective:<\/strong> The objective of the mission is to reveal the <strong>full spectrum of heat loss from Earth\u2019s polar regions<\/strong> for the first time, making climate models more accurate.<\/li>\n<li><strong>Aim :<\/strong>\n<ul>\n<li>The data from the PREFIRE mission is aimed at addressing the gap in knowledge and provide data to improve predictions of <strong>climate change and sea level rise.<\/strong><\/li>\n<li>Provide new information on how Earth\u2019s atmosphere and how <strong>ice influences<\/strong> the amount of heat being radiated out to space from <strong>the Arctic and Antarctic.<\/strong><\/li>\n<\/ul>\n<\/li>\n<li><strong>How will the satellites work?<\/strong>\n<ul>\n<li>The mission with cube satellites about the size of a shoebox will be launched aboard an Electron launch vehicle.<\/li>\n<li>It is equipped with technology proven on Mars, and will measure a \u201c<strong>little-studied portion<\/strong>\u201d of the <strong>radiant energy<\/strong> emitted by Earth.<\/li>\n<li>Two satellites carrying a <strong>thermal infrared spectrometer<\/strong> will be in <strong>asynchronous near-polar orbits<\/strong> and will be passing over a given spot on Earth at different times. To maximize coverage, they will be overlapping every few hours near the poles.<\/li>\n<li>The instruments weighing less than 6 pounds (3 kilograms) each will make readings using a <strong>device called a thermocouple,<\/strong> similar to the sensors found in many household thermostats.<\/li>\n<\/ul>\n<\/li>\n<li><strong>The mission will help in<\/strong>\n<ul>\n<li>Understand why the Arctic has warmed more than 2\u00bd times faster than the rest of the planet since the 1970s.<\/li>\n<li>Give scientists a better idea of how <strong>efficiently far-infrared heat<\/strong> is emitted by matter like snow and sea ice, and how clouds influence the amount of far-infrared radiation that escapes to space.<\/li>\n<li>It will help researchers better predict how the <strong>heat exchange<\/strong> between <strong>Earth and space<\/strong> will change in the future, and how those changes will affect phenomena like ice sheet melting, atmospheric temperatures, and global weather.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Q1: What is Electromagnetic Spectrum?<\/h2>\n<p>The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency or wavelength. It is fundamental to understanding how energy is transmitted across space.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/technology\/science\/nasa-prefire-mission-polar-earth-climate-9333490\/\" target=\"_blank\" rel=\"nofollow noopener\">NASA\u2019s new mission to study polar regions\u2019 heat loss to launch on May 22: All you need to know<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PREFIRE Polar Mission consists of twin satellites, each carrying one instrument and measuring the poles about six hours apart.<\/p>\n","protected":false},"author":5,"featured_media":23456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-23455","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/23455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=23455"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/23455\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/23456"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=23455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=23455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=23455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}