{"id":55844,"date":"2006-01-12T00:00:00","date_gmt":"2006-01-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/variabilidad-climatica-estratosferica-asociada-a-la-qbo\/"},"modified":"2006-01-12T00:00:00","modified_gmt":"2006-01-12T00:00:00","slug":"variabilidad-climatica-estratosferica-asociada-a-la-qbo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/variabilidad-climatica-estratosferica-asociada-a-la-qbo\/","title":{"rendered":"Variabilidad clim\u00e1tica estratosf\u00e9rica asociada a la qbo"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cristina Pe\u00f1a Ortiz <\/strong><\/h2>\n<p>Se analiza la oscilaci\u00f3n cuasi bienal (qbo), que es la principal  fuente de viabilidad clim\u00e1tica en la estratosfera tropical. Para ello se aplica el m\u00e9todo mtam-svd (multitaper y descomposici\u00f3n en valores singulares) a datos de rean\u00e1lisis y del modelo maecham5 de circulaci\u00f3n general, obteni\u00e9ndose una descripci\u00f3n novedosa de la qbo, tanto en el \u00e1mbito espacial como en el temporal. Este trabajo proporciona la primera observaci\u00f3n de la circulaci\u00f3n meridional secundaria obtenida a partir de datos del rean\u00e1lisis de era40 llegando por tanto, hasta el nivel de 0.1 hpa, lo que no hab\u00eda sido posible hasta ahora. Esto ha permitido visualizar y caracterizar una segunda pareja de c\u00e9lulas de la cms localizada en la alta estratosfera por encima de los 10hpa, asociada a la zona de cizalla del viento zonal que se forma entre las capas intermedia y superior de vientos de la qbo sobre el ecuador. Los resultados muestran que la se\u00f1al de la qbo en el v\u00f3rtice polar en el hemisferio norte es mucho m\u00e1s intensa en invierno (def). El m\u00e1ximo reforzamiento (debilitamiento) del v\u00f3rtice polar est\u00e1 asociado a una estructura de viento en la regi\u00f3n ecuatorial con anomal\u00edas m\u00e1ximas del oeste (este) en ~40 hpa y ~30 hpa. El valor m\u00e1ximo de las anomal\u00edas alcanza los 10m\/s y se produce en niveles de la  alta estratosfera (alrededor de 3 hpa en era40 y de 1hpa en maecham5) y en latitudes entre los 55\u00c2\u00ba y 65. En los resultados para el hemisferio norte destaca el alto nivel de concordancia obtenido entre los datos del rean\u00e1lisis de era40 y de maecham5. La se\u00f1al de la qbo en el v\u00f3rtice polar del hemisferio sur es mas intensa durante la primavera (son). En este caso, sin embargo, no hay consistencia entre los resultados obtenidos con era40 y maecham5. La distribuci\u00f3n de las anomal\u00edas respecto a la fase de la qbo no es la misma en era40 y maecham5. Era40 muestra un v\u00f3rtice polar acelerado (desacelerado) cuando hay vientos del oeste (este) centrados alrededor de 20 hpa sobre la<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Variabilidad clim\u00e1tica estratosf\u00e9rica asociada a la qbo<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Variabilidad clim\u00e1tica estratosf\u00e9rica asociada a la qbo <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cristina Pe\u00f1a Ortiz <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/12\/2006<\/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>Ricardo Garc\u00eda Herrera<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Emiliano Hern\u00e1ndez Mart\u00edn <\/li>\n<li>Elisa Manzini (vocal)<\/li>\n<li>Marco Giorgetta (vocal)<\/li>\n<li>Luis Gimeno Presa (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cristina Pe\u00f1a Ortiz Se analiza la oscilaci\u00f3n cuasi bienal (qbo), que es la principal fuente de viabilidad [&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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