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Proceedings Paper

Aerosol plume observations by the ground-based lidar, sunphotometer, and satellite: cases analysis
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Paper Abstract

Smoke and dust aerosol plumes are observed by the ground-based multi-wavelength elastic-Raman lidar, sunphotometer and space-borne lidar CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization). Lidar-derived multi-wavelength aerosol extinction profiles and column lidar ratios are constrained by the independently measured optical depths. The aloft smoke plume layers from Idaho/Montana forest fires were measured at 2~8 km altitude by the ground lidar on Aug. 14~15, 2007. High aerosol optical depths (AOD) are shown with the value of 0.6~0.8 at wavelength 500 nm and Angstrom exponent of 1.8. The CALIOP observations generally show consistent plume height distribution with the ground lidar, but partly misclassify these smoke plumes as clouds. The forest fire sources and intra-continental smoke transport are clearly illustrated by CALIOP and MODIS satellite imageries. For the moderate dust-like plumes on April 18, 2008, they were observed at the altitude of 2~6 km. Aerosol optical depths vary from 0.2 to 0.4 at wavelength 500 nm with Angstrom exponent <1.0 in the plume-layer. Ground-lidar and CALIOP retrievals show the good agreement in dust-like layer heights, extinction profiles and aerosol species classification.

Paper Details

Date Published: 9 October 2009
PDF: 11 pages
Proc. SPIE 7479, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V, 74790U (9 October 2009); doi: 10.1117/12.830639
Show Author Affiliations
Yonghua Wu, The City College of New York (United States)
Chuen-meei Gan, The City College of New York (United States)
Barry Gross, The City College of New York (United States)
Fred Moshary, The City College of New York (United States)
Sam Ahmed, The City College of New York (United States)


Published in SPIE Proceedings Vol. 7479:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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