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High resolution remote sensing of sulfate aerosols from CO 2 lidar backscatter
Author(s) -
Srivastava V.,
Bowdle D. A.,
Jarzembski M. A.,
Rothermel J.,
Chambers D. M.,
Cutten D. R.
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl02194
Subject(s) - aerosol , backscatter (email) , lidar , remote sensing , environmental science , sulfate , mineral dust , sulfuric acid , atmospheric sciences , geology , meteorology , materials science , geography , telecommunications , computer science , metallurgy , wireless
A high resolution technique for remotely sensing aerosol sulfate composition has been developed, based on the ratio of aerosol backscatter measured at 9.1 and 10.6 µm wavelengths with two continuous wave CO 2 lidars. This is demontrated using data from the NASA GLObal Backscatter Experiment (GLOBE) over the Pacific Ocean in 1990. Results indicate changes from sulfuric acid with some ammoniation in clean conditions and presence of dust with ammoniated sulfates in continental plumes. Lidars provide good estimates of backscatter ratio with ∼5 second sample times (∼1 km spatial resolution) in aerosol concentrations as low as ∼10 −2 µg/m³.