chapter - Atmospheric and Oceanic Science

La Plata basin climatology
Fig. 2.11. Western and southern border of the La Plata basin. Rainfall regime at characteristic sites:
b) eastern border of the Aconguija Mountain range c) southwestern corner, d) south border.
tropical jet in summer. Their effectiveness in terms of the occurrence, character and
intensity of the rainfalls, will depend in turn on the position and intensity of both the
Argentine Northwest Low and the one of the Chaco, which modulate the advection
of humidity from the North. During winter, the frosts are a recurrent phenomenon,
although it rarely snows. The rainfall minimum appears in winter. There is a gradient
of annual isohyets toward the Southwest, registering an average of around 1100 mm
in the coast of La Plata River, and less than 800 in the Southeast end.
In this chapter it has been described the main characteristics of the Climate in
La Plata basin. The regional features of the La Plata basin climate are summarized
in the table 2.1.The whole region is subject both to long period fluctuations as well
as trends in climate that will be addressed in chapter 5.
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