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Una baja costera (coastal low) es un centro de baja presión, con la isobara "cerrada". 1.- tiene registro en tres partes del mundo: a) Chile b) Oregon (costa Oeste de EEUU) c) África (no conozco una ciudad o estado de referencia) 2.- Se origina principalmente por la interacción de una configuración de alta presión, como lo es la Alta subtropical (para el caso de Chile), con un obstáculo montañoso de importantes dimensiones (cordillera de los Andes, Chile., Rocallosas, EEUU.) 3.- El centro de baja presión de mueve lmeridionalmente a lo largo de la costa: Norte-sur (Chile), S-N (EEUU), de ahí su nombre de "baja costera". 4.- En la pre-baja, es decir cuando esta "coastal low" se viene acercando, se puede observar un cambio en los sondeos SKEW-T, donde se pasa de una inversión de subsidencia a una inversión de radiación. Se percibe mucho calor debido a la compresión adiabática de las parcelas de aire. 5.- En la post-baja, se genera una gran cobertura nubosa y muy baja (principalmente Estratos) incluso generando leves lloviznas. 6.- Final mente se puede reconocer por: a) Imagen satelital en el rango visible, ya que se genera en la mayoria de los casos una especie de letra "V" b) En cartas meteorológicas: por una dorsal de "espesores" o "thickness" en los 500 MGP y justo sobre ella, una vaguada "invertida" en superficie. Mayor información puedes encontrar en el siguiente link: http://ams.allenpress.com/perlserv/?request=index-html Es un respetada pagina en donde distintos investigadores de renombre publican

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