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contributor authorTurner, D. D.
contributor authorFerrare, R. A.
contributor authorBrasseur, L. A. Heilman
contributor authorFeltz, W. F.
contributor authorTooman, T. P.
date accessioned2017-06-09T14:27:08Z
date available2017-06-09T14:27:08Z
date copyright2002/01/01
date issued2002
identifier issn0739-0572
identifier otherams-1949.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4155611
description abstractAutomated routines have been developed to derive water vapor mixing ratio, relative humidity, aerosol extinction and backscatter coefficient, and linear depolarization profiles, as well as total precipitable water vapor and aerosol optical thickness, from the operational Raman lidar at the Atmospheric Radiation Measurement (ARM) program's site in north-central Oklahoma. These routines have been devised to maintain the calibration of these data products, which have proven sensitive to the automatic alignment adjustments that are made periodically by the instrument. Since this Raman lidar does not scan, aerosol extinction cannot be directly computed below approximately 800 m due to the incomplete overlap of the outgoing laser beam with the detector's field of view. Therefore, the extinction-to-backscatter ratio at 1 km is used with the aerosol backscatter coefficient profile to compute aerosol extinction from 60 m to the level of complete overlap. Comparisons of aerosol optical depth derived using these algorithms with a collocated CIMEL sun photometer for clear-sky days over an approximate 2-yr period show a slope of 0.90 with a correlation coefficient of 0.884. Furthermore, comparing the aerosol extinction profile retrieved from this system with that from the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center's scanning Raman lidar agrees within 10% for the single available case.
publisherAmerican Meteorological Society
titleAutomated Retrievals of Water Vapor and Aerosol Profiles from an Operational Raman Lidar
typeJournal Paper
journal volume19
journal issue1
journal titleJournal of Atmospheric and Oceanic Technology
identifier doi10.1175/1520-0426(2002)019<0037:AROWVA>2.0.CO;2
journal fristpage37
journal lastpage50
treeJournal of Atmospheric and Oceanic Technology:;2002:;volume( 019 ):;issue: 001
contenttypeFulltext


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