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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Aerosols and particles
  • Global Change: Climate dynamics
  • Global Change: Regional climate change
  • Global Change: Remote sensing
  • Atmospheric Processes: Tropical meteorology

Abstract

New evidence for a relationship between Atlantic tropical cyclone activity and African dust outbreaks

Amato T. Evan

Center for Sustainability and the Global Environment, Nelson Institute for Environmental Studies, University of Wisconsin-Madison, Wisconsin, USA

Jason Dunion

Hurricane Research Division, AOML/NOAA, Miami, Florida, USA

Jonathan A. Foley

Center for Sustainability and the Global Environment, Nelson Institute for Environmental Studies, University of Wisconsin-Madison, Wisconsin, USA

Andrew K. Heidinger

Office of Research and Applications, NOAA/NESDIS, Camp Springs, Maryland, USA

Christopher S. Velden

Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, Wisconsin, USA

It is well known that Atlantic tropical cyclone activity varies strongly over time, and that summertime dust transport over the North Atlantic also varies from year to year, but any connection between tropical cyclone activity and atmospheric dust has been limited to a few case studies. Here we report new results that demonstrate a strong relationship between interannual variations in North Atlantic tropical cyclone activity and atmospheric dust cover as measured by satellite, for the years 1982–2005. While we cannot conclusively demonstrate a direct causal relationship, there appears to be robust link between tropical cyclone activity and dust transport over the Tropical Atlantic.

Received 3 April 2006; accepted 30 August 2006; published 10 October 2006.

Citation: Evan, A. T., J. Dunion, J. A. Foley, A. K. Heidinger, and C. S. Velden (2006), New evidence for a relationship between Atlantic tropical cyclone activity and African dust outbreaks, Geophys. Res. Lett., 33, L19813, doi:10.1029/2006GL026408.

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