Physics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3516810m&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 16, CiteID L16810
Physics
24
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Global Change: Remote Sensing (1855), Global Change: Atmosphere (0315, 0325), Atmospheric Composition And Structure: Radiation: Transmission And Scattering
Scientific paper
The relationship between the AOD and wind speed (U), obtained at the Mace Head atmospheric research station, is determined for clean marine (Northeast Atlantic) conditions under steady-state wind speed scenarios. AOD measurements were made under much higher wind speed conditions (up to 18 m s-1) than hitherto measured. The AOD is found to be approximately dependent on U2, with a high correlation (r2 = 0.97) determined at all measured wavelengths of 862 nm, 500 nm, 412 nm and 368 nm. A corresponding anti-correlation was observed between the Ångström exponent and wind speed (r2 = 0.93). The results illustrate that under moderate-to-high wind conditions, sea-spray AOD can rival or even exceed that associated with pollution plumes over oceanic regions and can potentially contribute to radiative, dynamical and biogeochemical feedback processes associated with future climate change.
Ceburnis Darius
Jennings Gerard S.
Mulcahy J. P.
O'Dowd Colin D.
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