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Title: Aerosol effects on global land surface energy fluxes during 2003–2010

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2014GL061640· OSTI ID:1402153
 [1];  [2];  [3]
  1. Department of Earth, Atmospheric, and Planetary Sciences Purdue University West Lafayette Indiana USA
  2. Department of Earth, Atmospheric, and Planetary Sciences Purdue University West Lafayette Indiana USA, Now at Department of Organismic and Evolutionary Biology Harvard University Cambridge Massachusetts USA
  3. Department of Earth, Atmospheric, and Planetary Sciences Purdue University West Lafayette Indiana USA, Department of Agronomy Purdue University West Lafayette Indiana USA

Abstract Aerosols affect downward solar radiation, impacting the terrestrial ecosystem carbon dynamics and energy budget. Here we apply a coupled modeling framework of a terrestrial ecosystem model and an atmospheric radiative transfer model to evaluate aerosol direct radiative effects on the surface heat fluxes of global terrestrial ecosystems during 2003–2010. We find that aerosol loadings decrease the mean latent heat flux by 2.4 Wm −2 (or evapotranspiration by 28 mm) and sensible heat flux by 16 Wm −2 . As a result, global mean soil moisture and water evaporative fraction have increased by 0.5% and 4%, respectively. Spatially, aerosol effects are significant in tropical forests and temperate broadleaf evergreen forests. This study is among the first quantifications of aerosols' effects on the heat fluxes of the global terrestrial ecosystems. The study further suggests that both direct and indirect aerosol radiative effects through aerosol‐cloud interactions should be considered to quantify the energy budget of the global terrestrial ecosystems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐FG02‐08ER64599
OSTI ID:
1402153
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Vol. 41 Journal Issue: 22; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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