El Niño-Oscilación del Sur y algunas series de temperatura máxima y brillo solar en Costa Rica
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Date
1996
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Tópicos Meteorológicos y Oceanográficos
Abstract
Some characteristics of "El Niño-Southern Oscillation" (ENSO) and their possible relationship with the space and time distribution of anomalies of monthly values of maximum temperature and sunshine hours are analyzed for some selected regions in Costa Rica. Time series are firstly deseasonalized, then smoothed in order to decrease the contribution of less than a year period components. To carry out the study moving average techniques and Fourier analysis are used. Time series showed anomalies in the range of 0.5° to 1°C, that could be associated with ENSO events. The sunshine hours series presented some consistency with the results of maximum temperature, however, its behavior is more difficult to be interpreted. Almost all the maximum temperature series showed a positive trend in the order of 0.5°C during the last two decades consistent with the ides of a regional warming.
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Citation
Alfaro, E. y Amador, J.A. (1996). El Niño-Oscilación del Sur y algunas series de temperatura máxima y brillo solar en Costa Rica. Tópicos Meteorológicos y Oceanográficos, 3(1), 19-26. http://cglobal.imn.ac.cr/documentos/revista/topicosmet19961/html5/index.html?page=1&noflash