气候变化领域集成服务门户(CCPortal): Modeled response of south american climate to three decades of deforestation

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DOI	10.1175/JCLI-D-20-0380.1
	Modeled response of south american climate to three decades of deforestation
	Jiang Y.; Wang G.; Liu W.; Erfanian A.; Peng Q.; Fu R.
发表日期	2021
ISSN	08948755
起始页码	2189
结束页码	2203
卷号	34 期号:6
英文摘要	This study investigates the potential effects of historical deforestation in South America using a regional climate model driven with reanalysis data. Two different sources of data were used to quantify deforestation during the 1980s to 2010s, leading to two scenarios of forest loss: Smaller but spatially continuous in scenario 1 and larger but spatially scattered in scenario 2. The model simulates a generally warmer and drier local climate following deforestation. Vegetation canopy becomes warmer due to reduced canopy evapotranspiration, and ground becomes warmer due to more radiation reaching the ground. The warming signal for surface air is weaker than for ground and vegetation, likely due to reduced surface roughness suppressing the sensible heat flux. For surface air over deforested areas, the warming signal is stronger for the nighttime minimum temperature and weaker or even becomes a cooling signal for the daytime maximum temperature, due to the strong radiative effects of albedo at midday, which reduces the diurnal amplitude of temperature. The drying signals over deforested areas include lower atmospheric humidity, less precipitation, and drier soil. The model identifies the La Plata basin as a region remotely influenced by deforestation, where a simulated increase of precipitation leads to wetter soil, higher ET, and a strong surface cooling. Over both deforested and remote areas, the deforestation-induced surface climate changes are much stronger in scenario 2 than scenario 1; coarse-resolution data and models (such as in scenario 1) cannot represent the detailed spatial structure of deforestation and underestimate its impact on local and regional climates. © 2021 American Meteorological Society. All rights reserved.
英文关键词	Amazon region; Atmosphere-land interaction; Climate change; Deforestation; Land use; Regional models
语种	英语
scopus关键词	Atmospheric humidity; Climate change; Deforestation; Heat flux; Surface roughness; Vegetation; Maximum temperature; Minimum temperatures; Potential effects; Radiative effects; Regional climate modeling; Sensible heat flux; Spatial structure; Vegetation canopy; Climate models; climate change; climate effect; climate modeling; deforestation; forest cover; historical perspective; humidity; land use change; land-atmosphere interaction; precipitation intensity; rainforest; regional climate; surface roughness; Amazonia; La Plata Basin
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178683
作者单位	Department of Civil and Environmental Engineering, University of Connecticut, Storrs, CT, United States; Center for Environmental Sciences and Engineering, University of Connecticut, Storrs, CT, United States; Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, China; Joint Institute for Regional Earth System Science and Engineering, Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Jiang Y.,Wang G.,Liu W.,et al. Modeled response of south american climate to three decades of deforestation[J],2021,34(6).
APA	Jiang Y.,Wang G.,Liu W.,Erfanian A.,Peng Q.,&Fu R..(2021).Modeled response of south american climate to three decades of deforestation.Journal of Climate,34(6).
MLA	Jiang Y.,et al."Modeled response of south american climate to three decades of deforestation".Journal of Climate 34.6(2021).