Atmospheric water vapor flux in the determination of the residual ET-P in three Brazilian macro regions

Revista Brasileira de Engenharia Agrícola e Ambiental

Cavalcanti, Enilson P.¹  Bezerra, Wagner de A.¹  Gomes Filho, Manoel F.¹ 

[1] UFCG, Campina Grande

关键词: climate;    precipitation;    evapotranspiration    INTRODUÇÃO Acreditava-se;    outrora;    que a precipitação pluvial era originada principalmente pela evaporação local (Brubaker et al;   

DOI  :  10.1590/S1415-43662008000500005

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This paper presents an analysis of precipitation, evapotranspiration and ET-P residuals for three 10º by 10º latitude/longitude control areas over the northeast, north and southeast of Brazil. The resulting water vapor flux is calculated and compared to the residual. The analysis is performed through the NCAR/NCEP reanalysis data for the period from 1958 to 1998. Some aspects of both seasonal and interannual variation of these variables are presented for each depicted area. The main result is the good correlation between the residuals and the resulting water vapor flux with determination coefficients of 0.86, 0.84 and 0.74 for these respective regions.

【 授权许可】

CC BY-NC