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Retrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm

TitleRetrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2008
AuthorsSerio, C., Masiello G., Esposito F., Di Girolamo P., Di Iorio Tatiana, Palchetti L., Bianchini G., Muscari G., Pavese G., Rizzi R., Carli B., and Cuomo V.
JournalOptics Express
Volume16
Pagination15816-15833
ISSN10944087
KeywordsAB Sorption coefficients, Absorption, algorithm, Algorithms, article, atmosphere, chemistry, Fourier analysis, Gas, Gases, Infrared, infrared spectrophotometry, methodology, Models, Novel methodology, Optics, Spectral radiances, Spectral ranges, spectrophotometry, Statistical, statistical model, Temperature, Theoretical, theoretical model, Vapors, Water, Water absorption, Water vapor
Abstract

The paper presents a novel methodology to retrieve the foreign-broadened water vapor continuum absorption coefficients in the spectral range 240 to 590 cm-1 and is the first estimation of the continuum coefficient at wave numbers smaller than 400 cm-1 under atmospheric conditions. The derivation has been accomplished by processing a suitable set of atmospheric emitted spectral radiance observations obtained during the March 2007 Alps campaign of the ECOWAR project (Earth COoling by WAter vapor Radiation). It is shown that, in the range 450 to 600 cm-1, our findings are in good agreement with the widely used Mlawer, Tobin-Clough, Kneizys-Davies (MT_CKD) continuum. Below 450 cm-1 however the MT.CKD model overestimates the magnitude of the continuum coefficient. © 2008 Optical Society of America.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-53249105815&doi=10.1364%2fOE.16.015816&partnerID=40&md5=d91c79f9517ad473659f8e14b4482826
DOI10.1364/OE.16.015816
Citation KeySerio200815816