Rain And Temperatures Trend Dynamics In Southern Bolivia (Tarija)

Abstract:

The climate changes from vast areas at micro- and meso– scale are shown; with emphasis on the confluence of the three ecosystems (Amazonia, Andes and Chaco); understanding that the past climatic forcings will stays in the near future, maybe under strongest stress due the change of the meteorological variables.

With the assumption that the climate is determined by three meteorological variables: precipitation, maxima and minima temperatures, and the acceptable record of those figures are for times shorter than 20 year, it was possible to made a backwards prospection assuming consistent and homogeneous data.

Using the Fourier transform method it was found not only the monthly change trend of temperatures and precipitation, but also the periodicity (yearly, interannual, interdecadal) for the Department of Tarija (South of Bolivia) and for each of the meteorological station and in each climatic stages: Altiplano, Interandean Valley, Bolivian- Tucuman Forest, and Chaco Plains.

The results shows that those periodicities could give us the base for understand the climatic forcing dynamics ruling this region or other ecological transition zones, in addition to the multiscale (yearly, interannual or interdecadal) periods for mitigation or adaptation.