{"id":19991,"date":"2018-03-09T09:09:10","date_gmt":"2018-03-09T09:09:10","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/wind-field-retrieval-from-satellite-radar-systems\/"},"modified":"2018-03-09T09:09:10","modified_gmt":"2018-03-09T09:09:10","slug":"wind-field-retrieval-from-satellite-radar-systems","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/wind-field-retrieval-from-satellite-radar-systems\/","title":{"rendered":"Wind field retrieval from satellite radar systems"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Marcos Portabella Arn\u00fas <\/strong><\/h2>\n<p>Las observaciones del viento son esenciales para determinar el flujo atmosf\u00e9rico. en particular, las observaciones del viento sobre la superficie del mar tienen numerosas aplicaciones tanto en meterorolog\u00eda como en oceanograf\u00eda. en este sentido, la mayor\u00eda de sistemas radar embarcados en sat\u00e9lites y utilizados en detecci\u00f3n son capaces de proprocionar informaci\u00f3n exhaustiva sobre el campo de viento en la superficie marina. Esta tesis revisa los m\u00e9todos de obtenci\u00f3n o extracci\u00f3n del viento a partir de las mediciones de dichos sistemas y propone nuevos m\u00e9todos para mejorar la calidad de las extracciones en los casos donde la metodolog\u00eda actual es insuficiente.  para invertir la funci\u00f3n geof\u00edsica que relaciona la medici\u00f3n radar con la intensidad y la direcci\u00f3n del viento (inc\u00f3gnitas), se necesitan por lo menos dos mediciones independientes sobre una misma \u00e1rea (celda) de la superficie del mar. El grado de independencia de las mediciones depende de la separaci\u00f3n angular (o azimutal) entre los distintos haces del radar con los que se realizan estas mediciones. Esta tesis se centra en mejorar la obtenci\u00f3n del viento cuando el sistema est\u00e1 determinado (dos o m\u00e1s mediciones) pero hay poca diversidad azimutal y cuando el sistema est\u00e1 indeterminado (una sola medici\u00f3n). Para ello, se utilizan las observaciones de dos sistemas radar: el seawinds y el sar (synthetic aparture radar).  los m\u00e9todos propuestos en esta tesis tanto para sistemas determinados (m\u00e9todo de soluci\u00f3n m\u00faltiple) como para sistemas indeterminados (swra o sar wind retrieval algorithm) est\u00e1n basados en la metodolog\u00eda bayesiana, es decir, en como maximizar la probabilidad de obtener el viento \u00abverdadero\u00bb a partir de unas mediciones radar y de la informaci\u00f3n a priori sobre el estado del viento (extra\u00edda a menudo de los modelos num\u00e9ricos de predicci\u00f3n del tiempo) asumiendo que todas las fuentes de informaci\u00f3n (mediciones e informaci\u00f3n a priori) est\u00e1n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Wind field retrieval from satellite radar systems<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Wind field retrieval from satellite radar systems <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Marcos Portabella Arn\u00fas <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/11\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Adrianus Stoffelen<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jeronimo Lorente castello <\/li>\n<li>bertrand Chapron (vocal)<\/li>\n<li>Antonio Rius jord\u00e1n (vocal)<\/li>\n<li>jordi Font ferr\u00e9 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Marcos Portabella Arn\u00fas Las observaciones del viento son esenciales para determinar el flujo atmosf\u00e9rico. en particular, las [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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