气候变化领域集成服务门户(CCPortal): Water budget changes in the Amazon basin under RCP 8.5 and deforestation scenarios

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DOI	10.3354/CR01597
	Water budget changes in the Amazon basin under RCP 8.5 and deforestation scenarios
	de Brito Gomes W.; Correia F.W.S.; Capistrano V.B.; Veiga J.A.P.; Vergasta L.A.; Chou S.C.; de Arruda Lyra A.; Nobre P.; Rocha V.M.
发表日期	2020
ISSN	0936-577X
起始页码	105
结束页码	120
卷号	80 期号:2
英文摘要	We used climate models to assess the effects of 2 distinct anthropogenic forcings on the water budget in the Amazon basin: (1) increasing global greenhouse gases under the RCP8.5 scenario, and (2) land cover change caused by deforestation. The Eta regional climate model, driven by the Brazilian Earth System Model version 2.5 (BESM 2.5), was used to simulate the climate response under the RCP8.5 scenario and due to deforestation throughout the 21st century. Changes in energy and water budgets led to an increase in temperature that reached 5°C throughout the basin. In the RCP8.5 scenario, moisture convergence, precipitation and evapotranspiration all decreased. In this scenario, the positive feedback mechanism was predominant, as the reductions in evapotranspiration and moisture convergence acted in the same direction to reduce precipitation. In the future deforestation scenarios, reductions in precipitation were even stronger. In this case, the negative feedback mechanism predominated, in which the relative reduction in evapotranspiration was greater than the reduction in precipitation, leading to an increase in moisture convergence over the region. Changes in temperature and the water cycle were intensified in the future deforestation scenarios. These results show that the 2 anthropogenic factors can change the water budget and cause an imbalance in the climate−biome system in the Amazon basin, highlighting the need for public conservation policies to halt the increase in environmental degradation in the Amazon basin and to reduce greenhouse gases emissions due the burning of fossil fuels. © Inter-Research 2020 · www.int-res.com
英文关键词	Amazon Basin; Anthropogenic scenarios; Climate Modeling; Deforestation; Water budget
语种	英语
scopus关键词	anthropogenic effect; climate modeling; deforestation; emission control; environmental degradation; evapotranspiration; land cover; precipitation (climatology); water budget; Amazon Basin
来源期刊	Climate Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146895
作者单位	Postgraduate Program in Climate and Environment, CLIAMB, INPA/UEA), Av. André Araújo, 2936, Campus II, Aleixo, Manaus, Amazonas, 69060-001, Brazil; Amazonas State University, Av. Darcy Vargas, 1200, Parque 10 de Novembro, Manaus, Amazonas 69065-020, Brazil; National Institute for Space Research, Av. Dos Astronautas, 1758, Sao Jose dos Campos, Sao Paulo, 12227-010, Brazil; Federal University of Recôncavo of Bahia, Campus Sede da UFRB, Rua Rui Barbosa, 710, Cruz das Almas, Bahia, CEP 44.380-000, Brazil
推荐引用方式 GB/T 7714	de Brito Gomes W.,Correia F.W.S.,Capistrano V.B.,et al. Water budget changes in the Amazon basin under RCP 8.5 and deforestation scenarios[J],2020,80(2).
APA	de Brito Gomes W..,Correia F.W.S..,Capistrano V.B..,Veiga J.A.P..,Vergasta L.A..,...&Rocha V.M..(2020).Water budget changes in the Amazon basin under RCP 8.5 and deforestation scenarios.Climate Research,80(2).
MLA	de Brito Gomes W.,et al."Water budget changes in the Amazon basin under RCP 8.5 and deforestation scenarios".Climate Research 80.2(2020).