Remote sensing of aerosol water uptake

Details Remote sensing of aerosol water uptake Remote sensing of aerosol water uptake

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3603814s&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 3, CiteID L03814

Physics

5

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Instruments And Techniques, Geochemistry: Composition Of Aerosols And Dust Particles

Scientific paper

Aerosol water content is an important component of aerosol radiative forcing, but the effect of water uptake on aerosols throughout the atmospheric column is not monitored at the present time. We present a technique for retrieving the volume fraction of water in atmospheric aerosols, and apply the technique to the AERONET database. We estimate that the volume fraction of water and the geometric hygroscopic growth factor (gHGF) can be retrieved to within 0.3 using this retrieval. The growth factors we obtain are consistent with published measurements, and indicate that aerosol water uptake is high in humid continental regions (gHGF ~ 1.3 along the U.S. East Coast in August) and low in regions dominated by desert dust (gHGF ~ 1.04 in Saudi Arabia).

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