{"id":880,"date":"2015-06-10T08:54:17","date_gmt":"2015-06-10T06:54:17","guid":{"rendered":"https:\/\/site.uit.no\/spaceweather\/?page_id=880"},"modified":"2021-02-17T17:06:41","modified_gmt":"2021-02-17T16:06:41","slug":"mec","status":"publish","type":"page","link":"https:\/\/site.uit.no\/spaceweather\/data-and-products\/geomagnetic-conditions\/mec\/","title":{"rendered":"Real-time Magnetic Equivalent Convection (MEC)"},"content":{"rendered":"<div class=\"responsive-tabs\">\n<h2 class=\"tabtitle\">Above Scandinavia<\/h2>\n<div class=\"tabcontent\">\n\n\t<script>\n\t    setInterval(function()\n        {\n            if(document.hasFocus()){\n               d = new Date();\n               image = jQuery('img#image_autorefresh_mAfRkHp4CP');\n               if(image.data(\"query\") == ''){\n\t               image.attr(\"src\", image.data(\"src\") + \"?\" + d.getTime());\n               }else{\n\t               image.attr(\"src\", image.data(\"src\") + \"?\" + d.getTime() + \"&\" + image.data(\"query\"));\n               }    \n            }\n        }, 60000);\n\n\t<\/script>\n\n\t<div class=\"aligncenter\">\n\t<img decoding=\"async\" src=\"https:\/\/spaceweather2.uit.no\/noswe\/pics\/MEC.png\" \n\t\t data-src=\"https:\/\/spaceweather2.uit.no\/noswe\/pics\/MEC.png\"\n\t     data-query=\"\"\n\t     alt=\"\"\t\n\t     class=\"image_autorefresh\" \n\t     id=\"image_autorefresh_mAfRkHp4CP\"\n\t     data-refresh=\"60\"\n\t     \t     \t     >\n\t\t<\/div>\n\t\n<em><br \/>\n<\/em><\/p>\n\n<\/div><h2 class=\"tabtitle\">Information<\/h2>\n<div class=\"tabcontent\">\n\n<p><strong><em>On the derivation<\/em>:\u00a0<\/strong> The ionospheric plasma convection direction and relative intensity here is estimated by the rotation of the geomagnetic H-component vector anticlockwise by 90 degrees (called the Magnetic Equivalent Convection (MEC) vector). Note that this estimation is only valid if one assumes that the detected ground disturbances are solely caused by the ionospheric Hall currents.<\/p>\n<p>The Scandinavian time series are available within the framework of the Nordic Virtual Observatory project of Troms\u00f8 Geophysical Observatory (<a href=\"https:\/\/www.tgo.uit.no\/\" target=\"_blank\" rel=\"noopener\">TGO<\/a>), the Finnish Meteorological Institute (<a href=\"https:\/\/ilmatieteenlaitos.fi\/\" target=\"_blank\" rel=\"noopener\">FMI<\/a>), Sodankyl\u00e4 Geophysical Observatory (<a href=\"http:\/\/www.sgo.fi\/\" target=\"_blank\" rel=\"noopener\">SGO<\/a>), and the Swedish Institute of Space Physics (<a href=\"https:\/\/www.irf.se\/sv\/start\/\" target=\"_blank\" rel=\"noopener\">IRF<\/a>). The global series are available via bilateral agreements between TGO and the respective observatories.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>On the derivation:\u00a0 The ionospheric plasma convection direction and relative intensity here is estimated by the rotation of the geomagnetic H-component vector anticlockwise by 90 degrees (called the Magnetic Equivalent Convection (MEC) vector). Note that this estimation is only valid if one assumes that the detected ground disturbances are solely &#8230;<\/p>\n","protected":false},"author":527,"featured_media":0,"parent":90,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-880","page","type-page","status-publish","hentry","column","threecol"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Real-time Magnetic Equivalent Convection (MEC) - Norwegian Centre for Space Weather (NOSWE)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/site.uit.no\/spaceweather\/data-and-products\/geomagnetic-conditions\/mec\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Real-time Magnetic Equivalent Convection (MEC) - 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