Other
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3615825p&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 15, CiteID L15825
Other
4
Geochemistry: Composition Of The Moon (0345, 4801, 4906), Geochemistry: Composition Of The Moon (0305, 4906), Geochemistry: Composition Of The Moon, Geochemistry: Composition Of The Moon
Scientific paper
Using four stream radiative transfer calculations, satellite-derived aerosol optical thickness at 558 nm and top of atmosphere (TOA) broadband radiative fluxes we examine the effect of mineral dust aerosols on the clear sky TOA shortwave (0.3-5 μm) fluxes over the Saharan desert [30E-10W, 15N-30N]. Over very bright surfaces (surface albedo > 35%), the TOA shortwave flux, from both satellite measurements and model calculations, is nearly insensitive to the increase in dust optical thickness. Below this surface albedo value, known as the critical albedo, mineral dust aerosols show scattering effects and above this they show absorbing effects. Therefore, over desert regions with a large range of surface albedo values, scattering and absorbing effects compensate each other thereby making the TOA shortwave aerosol radiative effect rather small.
Christopher Sundar A.
Patadia Falguni
Yang Eun-Su
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