Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1165h&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 8, p. 1165-1168
Physics
36
Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Troposphere-Constituent Transport And Chemistry, Global Change: Remote Sensing, Hydrology: Glaciology
Scientific paper
A recently developed technique of using satellite UV radiance measurements to detect absorbing tropospheric aerosols is found to be effective over snow/ice surfaces. This method takes advantage of the wavelength dependent reduction in the backscattered radiance due to the presence of absorbing aerosols over snow/ice surfaces. An example of the aerosol distribution derived from Total Ozone Mapping Spectrometer (TOMS) data is shown for an August 1998 event in which smoke generated by Canadian forest fires drifts over and across Greenland. During this event, the TOMS observed 360 nm reflectivity over the snow/ice surface dropped drastically from 90-100% down to 30-40%. We investigated the history of smoke events over snow/ice and found that there is a large interannual variability in the amount of smoke aerosols observed over Greenland.
Gleason James F.
Herman Jay R.
Hsu Christina N.
Seftor Colin J.
Torres Omar
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