Abstract: The Saharan Air Layer's Influence on Lower Tropospheric Ozone Across the North Atlantic During the Early Summer of 2010 and 2011 (92nd American Meteorological Society Annual Meeting (January 22-26, 2012))

Thursday, 26 January 2012: 11:00 AM

The Saharan Air Layer's Influence on Lower Tropospheric Ozone Across the North Atlantic During the Early Summer of 2010 and 2011

Room 342 (New Orleans Convention Center )

Miliaritiana Robjhon, NOAA/NWS/NCEP/CPC, Camp Spring, MD; and B. B. Demoz, W. R. Stockwell, J. W. Smith, A. Reyes, Y. Luna-Cruz, J. Clark, J. Holt, A. Brickhouse, and G. Jenkins

During the early summers of 2010 and 2010 ozonesonde measurements were strategically launched to investigate the influence of the Saharan Air Layer with a focus on the surface to 500 hPa layer. The influence of the SAL leads to a reduction between 850-500 hPa in general, while an increase in ozone is found in a layer just above the marine boundary layer. We presents results from a very large dust event during 6-9 July when observed Aerosol Optical Depth (AOD) reached values greater than 2 and 3 in Cape Verde and Senegal respectively. We compare the upstream ozonesonde measurements to those downstream in the Western Atlantic at Barbados.

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