Concurrent climate impacts of tropical South America land-cover change

被引：6

作者：

Hirota, Marina ^{[1
]}

Oyama, Marcos Daisuke

Nobre, Carlos ^{[1
]}

机构：

[1] Ctr Earth Syst Sci CCST INPF, Natl Inst Space Res INPE, BR-12630000 Cachoeira Paulista, SP, Brazil

来源：

ATMOSPHERIC SCIENCE LETTERS | 2011年 / 12卷 / 03期

关键词：

land-cover change; Amazonia; Northeast Brazil; biomes; AGCM simulation; AMAZON BASIN; DEFORESTATION; SEASON; SCALE;

D O I：

10.1002/asl.329

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The climatic effects of concurrent land-cover changes in Amazonia and Northeast Brazil (NEB) were evaluated by simulations using the Center for Weather Forecasting and Climate Studies Atmospheric General Circulation Model (CPTEC-AGCM). Three experiments were performed: Amazon savannization, NEB desertification and both land-cover changes occurring concurrently. We found that land-cover change from adjacent areas do affect both Amazon and NEB regions and that the negative precipitation anomaly in NEB due to concurrent land-cover changes in Amazon and NEB is weaker than the linear addition of the anomalies considering the land-cover changes separately (synergistic behaviour). A simple mechanism was proposed to explain this behaviour. Copyright. 2011 Royal Meteorological Society

引用

页码：261 / 267

页数：7

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