Evaluation of suitable spectral intervals for near-IR laboratory detection of water vapour continuum absorption

Ptashnik, I. V. (2007) Evaluation of suitable spectral intervals for near-IR laboratory detection of water vapour continuum absorption. Journal of Quantitative Spectroscopy & Radiative Transfer, 108 (1). pp. 146-160. ISSN 0022-4073 doi: 10.1016/j.jqsrt.2007.03.011

Abstract/Summary

The water vapour continuum absorption is an important component of molecular absorption of radiation in atmosphere. However, uncertainty in knowledge of the value of the continuum absorption at present can achieve 100% in different spectral regions leading to an error in flux calculation up to 3-5 W/m2 global mean. This work uses line-by-line calculations to reveal the best spectral intervals for experimental verification of the CKD water vapour continuum models in the currently least studied near-infrared spectral region. Possible sources of errors in continuum retrieval taken into account in the simulation include the sensitivity of laboratory spectrometers and uncertainties in the spectral line parameters in HITRAN-2004 and Schwenke-Partridge database. It is shown that a number of micro-windows in near-IR can be used at present for laboratory detection of the water vapour continuum with estimated accuracy from 30 to 5%.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/853
Item Type	Article
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	Elsevier Ltd.
Publisher Statement	Copyright © 2007 Elsevier Ltd
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