{"id":822,"date":"2020-02-07T17:51:36","date_gmt":"2020-02-07T21:51:36","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/aomip\/?page_id=822"},"modified":"2021-06-18T09:29:28","modified_gmt":"2021-06-18T13:29:28","slug":"winds","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/aomip\/data\/atmospheric-forcing-data\/winds\/","title":{"rendered":"Winds"},"content":{"rendered":"\n\n\t<h1>Winds<\/h1>\n<h2>Regional Models<\/h2>\n<p>For regional AOMIP models, the procedure for calculation of surface stress from sea-level pressure (<a href=\"https:\/\/www2.whoi.edu\/site\/aomip\/references\/#Proshutinsky_1997\">Proshutinsky<\/a>, 1997) is as follows:<\/p>\n<ul>\n<li>Interpolate 6-hourly or daily\u00a0<a href=\"https:\/\/www2.whoi.edu\/site\/aomip\/data\/atmospheric-forcing-data\/sea-level-pressure\/\">sea-level pressure<\/a>\u00a0<em>P<sub>a<\/sub><\/em>\u00a0onto model-dependent grid.<\/li>\n<li>Calculate 6 hourly or daily geostrophic wind as: <img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/aomip\/wp-content\/uploads\/sites\/100\/2020\/02\/geostrophic_wind_84895.gif\" alt=\"geostrophic wind\" width=\"146\" height=\"56\" \/>where <img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/aomip\/wp-content\/uploads\/sites\/100\/2020\/02\/unit_vector_84900.gif\" alt=\"Unit Vector\" width=\"16\" height=\"28\" \/> is the unit vector in the vertical direction.<\/li>\n<li>Calculate surface wind speed by retarding and turning the geostrophic wind to the left as:<\/li>\n<\/ul>\n<p>If\u00a0<em>Wg<\/em>\u00a0\u00a0&lt; 15 m\/s:<\/p>\n\n<p>If\u00a0<em>Wg\u00a0<\/em>\u00a0\u2265 15 m\/s:<\/p>\n\n\n<p>For global AOMIP models, it is proposed that the AOMIP surface winds (see above) be blended with those arising directly from the NCEP\/NCAR reanalysis product. The blending would occur over the latitude band 60-65 degrees North. The blended data set would have the same 6-hourly or daily temporal resolution as the AOMIP surface winds.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Winds Regional Models For regional AOMIP models, the procedure for calculation of surface stress from sea-level pressure (Proshutinsky, 1997) is as follows: Interpolate 6-hourly or daily\u00a0sea-level pressure\u00a0Pa\u00a0onto model-dependent grid. Calculate 6 hourly or daily geostrophic wind as: where is the unit vector in the vertical direction. Calculate surface wind speed by retarding and turning the&hellip;<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":805,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"tpl-sidebar.php","meta":{"advanced-sidebar-menu\/link-title":"","advanced-sidebar-menu\/exclude-page":false},"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/822"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/users\/83"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/comments?post=822"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/822\/revisions"}],"predecessor-version":[{"id":1693,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/822\/revisions\/1693"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/805"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/media?parent=822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}