Calibration of the Purple Crow Lidar vibrational Raman water-vapour mixing ratio and temperature measurements

Autor:	Heather Schijns, C R Bryant, Marcos Algara-Siller, Robert J. Sica, P. S. Argall
Rok vydání:	2007
Předmět:	Physics Backscatter Analytical chemistry General Physics and Astronomy chemistry.chemical_element Nitrogen Temperature measurement Atmosphere symbols.namesake Lidar chemistry Mixing ratio symbols Raman spectroscopy Water vapor Remote sensing
Zdroj:	Canadian Journal of Physics. 85:119-129
ISSN:	1208-6045 0008-4204
DOI:	10.1139/p06-091
Popis:	Purple Crow Lidar (PCL) measurements of the vibrational Raman-shifted backscatter from water vapour and nitrogen molecules allows height profiles of the water-vapour mixing ratio to be measured from 500 m up into the lower stratosphere. In addition, the Raman nitrogen measurements allow the determination of temperature profiles from about 10 to 40 km altitude. However, external calibration of these measurements is necessary to compensate for instrumental effects, uncertainties in our knowledge of the relevant molecular cross sections, and atmospheric transmission. A comparison of the PCL-derived water-vapour concentration and temperature profiles with routine radiosonde measurements from Detroit and Buffalo on 37 and 141 nights, respectively, was undertaken to provide this calibration. The calibration is then applied to the measurements and monthly mean-temperature and water-vapour profiles are determined.PACS Nos.: 42.68.Wt, 42.79.Qx
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0113610f07af14934327bd112bfdd8b5 https://doi.org/10.1139/p06-091 Zobrazit plný text záznamu Plný text ve formátu PDF