NDLI: Past, present and future vegetation-cloud feedbacks in the Amazon Basin

Content Provider	Springer Nature Link
Author	Pinto, E. Shin, Y. Cowling, S. A. Jones, C. D.
Copyright Year	2009
Abstract	To begin exploring the underlying mechanisms that couple vegetation to cloud formation processes, we derive the lifting condensation level (LCL) to estimate cumulus cloud base height. Using a fully coupled land–ocean–atmosphere general circulation model (HadCM3LC), we investigate Amazonian forest feedbacks on cloud formation over three geological periods; modern-day (a.d. 1970–1990), the last glacial maximum (LGM; 21 kya), and under a future climate scenario (IS92a; a.d. 2070–2090). Results indicate that for both past and future climate scenarios, LCL is higher relative to modern-day. Statistical analyses indicate that the 800 m increase in LCL during the LGM is related primarily to the drier atmosphere promoted by lower tropical sea surface temperatures. In contrast, the predicted 1,000 m increase in LCL in the future scenario is the result of a large increase in surface temperature and reduced vegetation cover.
Starting Page	741
Ending Page	751
Page Count	11
File Format	PDF
ISSN	09307575
Journal	Climate Dynamics
Volume Number	32
Issue Number	6
e-ISSN	14320894
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-02-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lifting condensation level Cloud base height Broadleaf forest Rainforest Vegetation-climate feedbacks Modeling Amazon basin Last glacial maximum Global change Oceanography Meteorology/Climatology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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