METEOROLOGICAL VARIABLES IN FOREST AND PASTURE AREA IN THE WESTERN AMAZON IN YEARS OF EXTREME EVENTS

• Published in: Ciência e natura Vol. 38; no. IX WORKSHOP; p. 217
• Main Authors: Jayne Soares Martins do Nascimento, Renata Gonçalves Aguiar, Alberto Dresch Webler, Graciela Redies Fischer, Gonçalves Aguiar, Leonardo José, Camila Bermond Ruezzene
• Format: Journal Article
• Language: Portuguese
• Published: Santa Maria Universidade Federal de Santa Maria - Centro de Ciências Naturais e Exatas 01.01.2016
• ISSN: 0100-8307; 2179-460X

Deforestation in the Amazon comes from historical contexts which date from the colonization of the region. Several studies have identified climate change from the conversion of forests into agricultural systems. So, this study aimed to identify possible differences in the behavior of the specific humidity, air temperature and net radiation due to conversion of forest to pasture, using data corresponding to extreme event years, once these have occurred in short period of time. Therefore, it was used measures of the variables of a tropical rain forest area and a pasture area, where there are two towers belonging to the Large Scale Biosphere-Atmosphere Experiment in Amazonia - LBA. The measurements correspond to the years of 2005 and 2010, which occurred drought events, and 2009, a year that occurred a flood period. For each variable were calculated hourly means of each site, separated by year and by period. It was found that the years with dry events showed greater variability in all variables, especially in the dry period of the mentioned years, being the pasture the most affected area. Understanding this dynamic enables better planning in agricultural activities in the region.