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AGU: Geophysical Research Letters

 

Keywords

  • hurricanes
  • land cover change
  • climate feedbacks

Index Terms

  • Global Change: Land cover change
  • Global Change: Land/atmosphere interactions
  • Hydrology: Land/atmosphere interactions
  • Global Change: Regional climate change
  • Global Change: Remote sensing

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L23401, 5 PP., 2008
doi:10.1029/2008GL035683

Hurricane driven changes in land cover create biogeophysical climate feedbacks

Robinson I. Negrón Juárez

Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, USA

Jeffrey Q. Chambers

Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, USA

Hongcheng Zeng

Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, USA

David B. Baker

Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, USA

Hurricanes can devastate thousands of hectares of forested area producing changes beyond simply vegetation damage and biomass loss. This study reports changes in regional climate associated with Hurricane Rita which made landfall on the Gulf Coastal Plain on September 24th, 2005. Results demonstrate that over severely disturbed forested areas, biogeophysical effects produced by Rita created anomalous precipitation patterns, with a decrease in precipitation the following winter, and an increase during the subsequent summer season. The dominant biogeophysical effect was a change in albedo caused by ∼14,000 km2 of disturbed forested area (downed and dead, snapped and structurally damaged trees) from Rita, equivalent to a committed carbon release of 32 to 43% of the net annual U.S. sink in forest trees. As recent studies project a likely increase in hurricane intensity during the 21st century, understanding the potential impact of forest damage from hurricanes on regional climate is important.

Received 12 August 2008; accepted 22 October 2008; published 2 December 2008.

Citation: Juárez, R. I. N., J. Q. Chambers, H. Zeng, and D. B. Baker (2008), Hurricane driven changes in land cover create biogeophysical climate feedbacks, Geophys. Res. Lett., 35, L23401, doi:10.1029/2008GL035683.

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