Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsa31a..06e&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SA31A-06
Physics
3309 Climatology (1620), 3360 Remote Sensing, 0305 Aerosols And Particles (0345, 4801), 0320 Cloud Physics And Chemistry
Scientific paper
Limb radiance spectra from the OSIRIS Ultraviolet and Visible Imaging Spectrograph (UVIS) on the Odin spacecraft are used to derive global stratospheric aerosol extinction coefficients with a newly developed algorithm. The altitude profiles are compared with POAM aerosol profiles. Cirrus clouds are apparent on many profiles, particularly in the tropics. Extinction above 20 km is less than 0.0005/km, typical for periods with no major volcanic injections. Aerosols are at times detectable as high as 35 km. The spatial resolution is approximately 800 km between samples along the near-polar orbit. Large variations with geographic location are observed on global maps from 15, 20, 25 and 30 km. The 15 km map shows correlations with aerosol increases in the South American and African sectors as well as with cirrus clouds from large weather systems. The Walker circulation is apparent on the 15 km maps. The maps are also compared with the TOMS aerosol product.
Evans Wayne F.
Gattinger Richard L.
Llewellyn Edam J.
Petelina S.
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