{"id":27091,"date":"2018-03-09T09:19:12","date_gmt":"2018-03-09T09:19:12","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-observacional-y-modelizacion-numerica-de-las-condiciones-de-propagacion-atmosferica-de-los-ecos-de-radar-meteorologico\/"},"modified":"2018-03-09T09:19:12","modified_gmt":"2018-03-09T09:19:12","slug":"analisis-observacional-y-modelizacion-numerica-de-las-condiciones-de-propagacion-atmosferica-de-los-ecos-de-radar-meteorologico","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/analisis-observacional-y-modelizacion-numerica-de-las-condiciones-de-propagacion-atmosferica-de-los-ecos-de-radar-meteorologico\/","title":{"rendered":"An\u00e1lisis observacional y modelizaci\u00f3n num\u00e9rica de las condiciones de propagaci\u00f3n atmosf\u00e9rica de los ecos de radar meteorol\u00f3gico"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Joan Bech Rustullet <\/strong><\/h2>\n<p>La tesis estudia uno de los factores que afectan la calidad de las observaciones de radar meteorol\u00f3gico en el marco de la acci\u00f3n europea cost-717: las condiciones atmosf\u00e9ricas de radiopropagaci\u00f3n. Estas condiciones se caracterizan a partir de los perfiles verticales de refractividad del aire. Utilizando cinco a\u00f1os de radiosondeo de la ciudad de barcelona se elabora un an\u00e1lisis estad\u00edstico del gradiente verticla de refractividad, incluyendo un c\u00e1lculo del valor del radio equivalente seg\u00fan las condiciones locales de acuerdo con las recomendaciones de la acci\u00f3n integrada europea cost-75. Se observan un marcado car\u00e1cter estacional en el gradiente de refractividad, con un m\u00ednimo remarcable durante  los meses de julio, agosto y septiembre. Este predominio de las condiciones de super refracci\u00f3n coincide con las estimaciones de la \u00abinternational telecommunication union\u00bb (itu). Los resultados se comparan con otros autores, tambi\u00e9n se ilustran diversos casos de superrefracci\u00f3n del verano de 2003, seleccionados a partir del diagn\u00f3stico de radiosondeo, observados con el radar meteorol\u00f3gico de vallirana. Utilizando la distribuci\u00f3n de frecuencias del gradiente vertical de refractividad se estudia la variabilidad de la altura del haz del radar. En particular se elabora un an\u00e1lisis de sensibilidad de la correcci\u00f3n de bloqueo topogr\u00e1fico operativa en la red de radares de eua (nexrad) aplicada a diversos obst\u00e1culos cercanos al radar meteorol\u00f3gico de vallirana (barcelona). Finalmente, se evalu\u00e1 la utilizaci\u00f3n de pron\u00f3sticos de condiciones de radiopropagaci\u00f3n. Para ello se utiliza el modelo meseoescalar de predicci\u00f3n num\u00e9rica del tiempo \u00abmas\u00bb. Concretamente se pronostican perfiles de refractividad del aire a partir de las salinas del modelo. Usando los perfiles se calculan dos magnitudes: el gradiente vartical de refractividad y un \u00edndice de conducci\u00f3n que cuantifica la intensidad de la superrrefracci\u00f3n. La bondad de los pron\u00f3st<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>An\u00e1lisis observacional y modelizaci\u00f3n num\u00e9rica de las condiciones de propagaci\u00f3n atmosf\u00e9rica de los ecos de radar meteorol\u00f3gico<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 An\u00e1lisis observacional y modelizaci\u00f3n num\u00e9rica de las condiciones de propagaci\u00f3n atmosf\u00e9rica de los ecos de radar meteorol\u00f3gico <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Joan Bech Rustullet <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 27\/11\/2003<\/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>Jeronimo Lorente Castello<\/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>chandra Madhukar (vocal)<\/li>\n<li>enric Vilar (vocal)<\/li>\n<li>Francisco Javier Fabregas canovas (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Joan Bech Rustullet La tesis estudia uno de los factores que afectan la calidad de las observaciones 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