{"id":753,"date":"2017-04-19T22:34:00","date_gmt":"2017-04-19T22:34:00","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/geophysical\/?post_type=chapter&#038;p=753"},"modified":"2017-04-26T17:51:07","modified_gmt":"2017-04-26T17:51:07","slug":"the-polar-front-and-jet-streams","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/chapter\/the-polar-front-and-jet-streams\/","title":{"raw":"The Polar Front and Jet Streams","rendered":"The Polar Front and Jet Streams"},"content":{"raw":"The <strong>polar front<\/strong> is the junction between the Ferrell and Polar cells. At this low pressure zone, relatively warm, moist air of the Ferrell Cell runs into relatively cold, dry air of the Polar cell. The weather where these two meet is extremely variable, typical of much of North America and Europe.\r\n\r\nThe <strong>polar jet stream<\/strong> is found high up in the atmosphere where the two cells come together. A jet stream is a fast-flowing river of air at the boundary between the troposphere and the stratosphere. Jet streams form where there is a large temperature difference between two air masses.\r\n\r\nhttps:\/\/youtu.be\/huweohIh_Bw\r\n\r\n&nbsp;\r\n\r\nThis explains why the polar jet stream is the world\u2019s most powerful.\u00a0Jet streams move seasonally just as the angle of the Sun in the sky migrates north and south. The polar jet stream, known as \u201cthe jet stream,\u201d moves south in the winter and north in the summer.\r\n\r\n<img class=\"aligncenter size-full wp-image-806\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/26174725\/jetstream3.jpg\" alt=\"As wind cells get further from the the pole and closer to the equator, the cells get larger. The Polar cell lies between the North Pole and sixty degrees north. The ferrel cell lies between 60 and 30 degrees north and interacts with the polar jet. The Hadley cell lies between 30 degrees north and the equator and interacts with the subtropical jet.\" width=\"600\" height=\"240\" \/>\r\n\r\n&nbsp;","rendered":"<p>The <strong>polar front<\/strong> is the junction between the Ferrell and Polar cells. At this low pressure zone, relatively warm, moist air of the Ferrell Cell runs into relatively cold, dry air of the Polar cell. The weather where these two meet is extremely variable, typical of much of North America and Europe.<\/p>\n<p>The <strong>polar jet stream<\/strong> is found high up in the atmosphere where the two cells come together. A jet stream is a fast-flowing river of air at the boundary between the troposphere and the stratosphere. Jet streams form where there is a large temperature difference between two air masses.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-1\" title=\"What is the jet stream and how does it work?\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/huweohIh_Bw?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p>This explains why the polar jet stream is the world\u2019s most powerful.\u00a0Jet streams move seasonally just as the angle of the Sun in the sky migrates north and south. The polar jet stream, known as \u201cthe jet stream,\u201d moves south in the winter and north in the summer.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-806\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/26174725\/jetstream3.jpg\" alt=\"As wind cells get further from the the pole and closer to the equator, the cells get larger. The Polar cell lies between the North Pole and sixty degrees north. The ferrel cell lies between 60 and 30 degrees north and interacts with the polar jet. The Hadley cell lies between 30 degrees north and the equator and interacts with the subtropical jet.\" width=\"600\" height=\"240\" \/><\/p>\n<p>&nbsp;<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-753\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Dynamic Earth: Introduction to Physical Geography. <strong>Authored by<\/strong>: R. Adam Dastrup. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/www.opengeography.org\/physical-geography.html\">http:\/\/www.opengeography.org\/physical-geography.html<\/a>. <strong>Project<\/strong>: Open Geography Education. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/\">CC BY-SA: Attribution-ShareAlike<\/a><\/em><\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">All rights reserved content<\/div><ul class=\"citation-list\"><li>What is the jet stream and how does it work?. <strong>Authored by<\/strong>: Met Office - Weather. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/huweohIh_Bw\">https:\/\/youtu.be\/huweohIh_Bw<\/a>. <strong>License<\/strong>: <em>All Rights Reserved<\/em>. <strong>License Terms<\/strong>: Standard YouTube License<\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">Public domain content<\/div><ul class=\"citation-list\"><li>The Jet Stream. <strong>Provided by<\/strong>: NOAA. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/oceanservice.noaa.gov\/education\/yos\/resource\/JetStream\/global\/jet.htm\">http:\/\/oceanservice.noaa.gov\/education\/yos\/resource\/JetStream\/global\/jet.htm<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/pdm\">Public Domain: No Known Copyright<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":17,"menu_order":10,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Dynamic Earth: Introduction to Physical Geography\",\"author\":\"R. Adam Dastrup\",\"organization\":\"\",\"url\":\"http:\/\/www.opengeography.org\/physical-geography.html\",\"project\":\"Open Geography Education\",\"license\":\"cc-by-sa\",\"license_terms\":\"\"},{\"type\":\"copyrighted_video\",\"description\":\"What is the jet stream and how does it work?\",\"author\":\"Met Office - Weather\",\"organization\":\"\",\"url\":\"https:\/\/youtu.be\/huweohIh_Bw\",\"project\":\"\",\"license\":\"arr\",\"license_terms\":\"Standard YouTube License\"},{\"type\":\"pd\",\"description\":\"The Jet Stream\",\"author\":\"\",\"organization\":\"NOAA\",\"url\":\"http:\/\/oceanservice.noaa.gov\/education\/yos\/resource\/JetStream\/global\/jet.htm\",\"project\":\"\",\"license\":\"pd\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-753","chapter","type-chapter","status-publish","hentry"],"part":594,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/users\/17"}],"version-history":[{"count":3,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/753\/revisions"}],"predecessor-version":[{"id":807,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/753\/revisions\/807"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/parts\/594"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/753\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/media?parent=753"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapter-type?post=753"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/contributor?post=753"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/license?post=753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}