Browsing by Author "Laporte, S"

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    Cuenca del Río Arenal: Análisis de los eventos El Niño de los años 1992-93, 1994-95 y 1997-8
    (Tópicos Meteorológicos y Oceanográficos, 2000) Amador, J; Laporte, S; Chacón, R
    The precipitation patterns during El Niño events of 1992-93, 1994-95 and 1997-98 are analyzed for the Arenal River Basin. Pentad data are used to study the rainfall distribution for Naranjos Agrios (in the northwestern part of the basin), La Unión (central part) and Caño Negro (southeastern portion) during those events. Precipitation anomalies are compared with the reservoir level and with the mean accumulated rainfall for the basin. From the results obtained, El Niño events are generally associated with a decrease in the reservoir level, although some other factors also affect this parameter. Naranjos Agrios is affected by a kind of Pacific type of climatological conditions, whereas, Caño Negro reveals more influence from the Caribbean.
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    Cuenca del Río Arenal: Análisis de los eventos La Niña 1988-89 y 1996
    (Tópicos Meteorológicos y Oceanográficos, 2000) Amador, J; Chacón, R; Laporte, S
    The precipitation patterns during La Niña events of 1988-89 and 1996 are analyzed for the Arenal River Basin. Pentad data are used to study the rainfall distribution for Naranjos Agrios (in the northwestern part of the basin), La Unión (central part) and Caño Negro (southeastern portion) during those events. From the results obtained, it could be inferred that La Niña events generally decrease the precipitation in the basin, especially that one from the northern and western parts by means of systems originated in the Caribbean side such as tropical waves, hurricanes and meridional propagation, which appear to be the more relevant in the rainfall positive anomalies. Some extreme events are difficult to associate with the above systems, but nevertheless its presence is very important to determine rainfall the basin