Relación de las anomalías climáticas de la atmósfera libre sobre Costa Rica y la variabilidad de las precipitaciones durante los eventos El Niño

dc.contributor.authorAlvarado, L
dc.contributor.authorFernández, W
dc.date.accessioned2024-06-18T19:42:34Z
dc.date.available2024-06-18T19:42:34Z
dc.date.issued2001
dc.description.abstractThe main physical causes of the sharp seasonal and inter-annual changes in the two rainfall regimes of Costa Rica during El Niño events are explained by means of the results of Alvarado and Fernández (2001). It is found that the rainfall anomalies are associated with: (i) the persistence of the northerly winds in the lower troposphere and the intensification (weakening) of the easterlies in the summer (winter) period, whose interaction with topography enhances the Föhn effect, (ii) the development of anomalous westerly winds in the upper troposphere during summer, (iii) the sharp decrease of humidity in the lower troposphere and its increase at mid-levels, (iv) the shorter time of permanence over Costa Rica of the ITCZ and its location further South than usual on the Pacific, (v) the considerable increase in wind shear during winter and summer, (vi) the higher values in equivalent potential temperature (qe) and the higher elevation of the convectively unstable layer, which implies a greater potential for deep convection, (vii) the decrease in the tropical cyclone activity in the Caribbean Sea and its increase in the Pacific Ocean, and (viii) the greater convergence in Western Caribbean due to a greater dynamic instability associated to the intensification of the lower level jet.
dc.identifier.citationAlvarado, L.F. y Fernández, W. (2001). Relación de las anomalías climáticas de la atmósfera libre sobre Costa Rica y la variabilidad de las precipitaciones durante los eventos El Niño. Tópicos Meteorológicos y Oceanográficos, 8(2), 145-157.
dc.identifier.urihttps://daki.cigefi.ucr.ac.cr/handle/123456789/154
dc.language.isoes
dc.publisherTópicos Meteorológicos y Oceanográficos
dc.titleRelación de las anomalías climáticas de la atmósfera libre sobre Costa Rica y la variabilidad de las precipitaciones durante los eventos El Niño
dc.typeArticle
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
2001_10.pdf
Size:
354.38 KB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description: