On climate variability in Northeast of Brazil

被引：169
|
作者：
da Silva, VDR [1 ]
机构：
[1] Univ Fed Campina Grande, Dept Atmospher Sci, BR-109970 Campina Grande, Brazil
来源：
JOURNAL OF ARID ENVIRONMENTS | 2004年 / 58卷 / 04期
关键词：
reference evapo-transpiration; class A pan evaporation; rainfall; air temperature; relative humidity; aridity index; trend;
D O I：
10.1016/j.jaridenv.2003.12.002
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The time-series (annual period and dry- and wet-season) of eight climatic variables were analysed to ascertain the existence of climate variability in Northeast of Brazil. Results indicated generally increasing trends in most of these variables (statistically significant at p<0.01 or <0.05) by Mann-Kendall test. However, relative humidity and rainfall presented decreasing behavior. The study showed that most of the stations studied are going through a process of environmental dryness. The results also suggest that the historical trends may be related to climate variability in Northeast of Brazil, which affects both semi-arid and coastal part of the region. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：575 / 596
页数：22
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