Comparison of columnar water-vapor measurements from solar transmittance methods

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dc.contributor.authorSchmid, Beat
dc.contributor.authorMichalsky, Joseph J.
dc.contributor.authorSlater, Donald W.
dc.contributor.authorBarnard, James C.
dc.contributor.authorHalthore, Rangasayi N.
dc.contributor.authorLiljegren, James C.
dc.contributor.authorHolben, Brent N.
dc.contributor.authorEck, Thomas
dc.contributor.authorLivingston, John M.
dc.contributor.authorRussell, Philip B.
dc.contributor.authorIngold, Thomas
dc.contributor.authorSlutsker, Ilya
dc.date.accessioned2024-04-29T17:01:35Z
dc.date.available2024-04-29T17:01:35Z
dc.date.issued2001-04-20
dc.description.abstractIn the fall of 1997 the Atmospheric Radiation Measurement program conducted a study of water-vapor-abundance-measurement at its southern Great Plains site. The large number of instruments included four solar radiometers to measure the columnar water vapor (CWV) by measuring solar transmittance in the 0.94-µm water-vapor absorption band. At first, no attempt was made to standardize our procedures to the same radiative transfer model and its underlying water-vapor spectroscopy. In the second round of comparison we used the same line-by-line code (which includes recently corrected H₂O spectroscopy) to retrieve CWV from all four solar radiometers, thus decreasing the mean CWV by 8–13%. The remaining spread of 8% is an indication of the other-than-model uncertainties involved in the retrieval.
dc.description.sponsorshipThe Office of Earth Science, NASA Headquarters ~Robert Curran and Jack Kaye! and the National Oceanic and Atmospheric Administration Office of Global Programs ~Joel Levy! funded this research in part ~grants to Bay Area Environmental Research Institute, SRI International, and NASA Ames Laboratory !. The research was also supported by the Office of Biological and Environmental Research of the U.S. Department of Energy as part of the Atmospheric Radiation Measurement Program through grant DE-FG02-90ER61072 ~State University of New York! and by contract DE-AC02- 98CH10886 ~Brookhaven National Laboratory!, and contracts CHENG82-1010502-0002884 ~Ames Laboratory! and W-31-109-Eng-38 ~Argonne National Laboratory!. The Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by Battelle Memorial Institute under contract DEAC0676RLO 1830. The AERONET project is supported by the Earth-Observing System Project Science Office ~Michael King! and the Office of Earth Science, NASA Headquarters ~Robert Curran!.
dc.description.urihttps://opg.optica.org/ao/abstract.cfm?uri=ao-40-12-1886
dc.format.extent11 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m21kax-dvul
dc.identifier.citationSchmid, Beat, Joseph J. Michalsky, Donald W. Slater, James C. Barnard, Rangasayi N. Halthore, James C. Liljegren, Brent N. Holben, et al. “Comparison of Columnar Water-Vapor Measurements from Solar Transmittance Methods.” Applied Optics 40, no. 12 (April 20, 2001): 1886–96. https://doi.org/10.1364/AO.40.001886.
dc.identifier.urihttps://doi.org/10.1364/AO.40.001886
dc.identifier.urihttp://hdl.handle.net/11603/33443
dc.language.isoen_US
dc.publisherOptica
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.subjectAtmospheric observation
dc.subjectInfrared imaging
dc.subjectMeasuring instruments
dc.subjectNear infrared
dc.subjectRadiometry
dc.subjectTransmittance
dc.titleComparison of columnar water-vapor measurements from solar transmittance methods
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0001-9801-1610

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