Automated Retrievals of Water Vapor and Aerosol Profiles from an Operational Raman Lidar

Autor:	David D. Turner, Wayne F. Feltz, T. Tooman, L. A. Heilman Brasseur, Richard Ferrare
Rok vydání:	2002
Předmět:	Atmospheric Science Raman lidar Detector Ocean Engineering Field of view Atmospheric sciences Aerosol Calibration Mixing ratio Environmental science Relative humidity Physics::Atmospheric and Oceanic Physics Water vapor Remote sensing
Zdroj:	Journal of Atmospheric and Oceanic Technology. 19:37-50
ISSN:	1520-0426 0739-0572
DOI:	10.1175/1520-0426(2002)019<0037:arowva>2.0.co;2
Popis:	Automated 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 ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1d4f426bb42db6d4015cec41794c1c28 https://doi.org/10.1175/1520-0426(2002)019<0037:arowva>2.0.co Zobrazit plný text záznamu Plný text ve formátu PDF