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Impacts on regional climate of Amazon deforestation
Author(s) -
Dickinson Robert E.,
Kennedy Patrick
Publication year - 1992
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/92gl01905
Subject(s) - albedo (alchemy) , environmental science , longwave , amazon rainforest , deforestation (computer science) , precipitation , atmospheric sciences , earth's energy budget , cloud cover , energy balance , climate change , climatology , climate model , surface runoff , meteorology , cloud computing , radiation , geography , geology , ecology , oceanography , computer science , programming language , biology , art , physics , quantum mechanics , performance art , art history , operating system
A simulation of the climate response to Amazon deforestation has been carried out. Precipitation is decreased on the average by 25% or 1.4 mm/day, with ET and runoff both decreasing by 0.7 mm/day. Modifications of surface energy balance through change of albedo and roughness are complicated by cloud feedbacks. The initial decrease of the absorption of solar radiation by higher surface albedos is largely cancelled by a reduction in cloud cover, but consequent reduction in downward longwave has a substantial impact on surface energy balance. Smoke aerosols might have an effect comparable to deforestation during burning season.