Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations
Abstract High‐spectral‐resolution thermal infrared radiance observations made with the Airborne Research Interferometer Evaluation System instrument on the Met Office C130 aircraft in tropical and sub‐arctic atmospheres are used to evaluate the water vapour continuum and line absorption. Coincident...
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crwiley:10.1256/qj.03.08 2023-12-03T10:17:02+01:00 Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations Taylor, Jonathan P. Newman, Stuart M. Hewison, Tim J. McGrath, Andrew 2003 http://dx.doi.org/10.1256/qj.03.08 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1256%2Fqj.03.08 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1256/qj.03.08 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 129, issue 594, page 2949-2969 ISSN 0035-9009 1477-870X Atmospheric Science journal-article 2003 crwiley https://doi.org/10.1256/qj.03.08 2023-11-09T14:29:12Z Abstract High‐spectral‐resolution thermal infrared radiance observations made with the Airborne Research Interferometer Evaluation System instrument on the Met Office C130 aircraft in tropical and sub‐arctic atmospheres are used to evaluate the water vapour continuum and line absorption. Coincident microwave radiometer measurements at 183 GHz are used to help constrain the water vapour profile. Through careful selection of wavelengths where the water vapour continuum has varying impacts on the observed radiances, analysis shows that the continuum is too strong; this is using the General Line‐by‐line Atmospheric Transmittance and Radiance Model with the CKD2.4 water vapour continuum and High Resolution Transmission Molecular Absorption 2000 spectral database. Zenith observations from low altitude indicate that the continuum requires reducing by between 6% and 15% depending on the frequency, which is in good agreement with recent laboratory data. A modified continuum is presented and used in modelling to compare against upper‐troposphere nadir measurements obtained in tropical and sub‐arctic atmospheres. Copyright © Crown copyright, 2003 Article in Journal/Newspaper Arctic Wiley Online Library (via Crossref) Arctic Quarterly Journal of the Royal Meteorological Society 129 594 2949 2969 |
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Open Polar |
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Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Taylor, Jonathan P. Newman, Stuart M. Hewison, Tim J. McGrath, Andrew Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
topic_facet |
Atmospheric Science |
description |
Abstract High‐spectral‐resolution thermal infrared radiance observations made with the Airborne Research Interferometer Evaluation System instrument on the Met Office C130 aircraft in tropical and sub‐arctic atmospheres are used to evaluate the water vapour continuum and line absorption. Coincident microwave radiometer measurements at 183 GHz are used to help constrain the water vapour profile. Through careful selection of wavelengths where the water vapour continuum has varying impacts on the observed radiances, analysis shows that the continuum is too strong; this is using the General Line‐by‐line Atmospheric Transmittance and Radiance Model with the CKD2.4 water vapour continuum and High Resolution Transmission Molecular Absorption 2000 spectral database. Zenith observations from low altitude indicate that the continuum requires reducing by between 6% and 15% depending on the frequency, which is in good agreement with recent laboratory data. A modified continuum is presented and used in modelling to compare against upper‐troposphere nadir measurements obtained in tropical and sub‐arctic atmospheres. Copyright © Crown copyright, 2003 |
format |
Article in Journal/Newspaper |
author |
Taylor, Jonathan P. Newman, Stuart M. Hewison, Tim J. McGrath, Andrew |
author_facet |
Taylor, Jonathan P. Newman, Stuart M. Hewison, Tim J. McGrath, Andrew |
author_sort |
Taylor, Jonathan P. |
title |
Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
title_short |
Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
title_full |
Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
title_fullStr |
Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
title_full_unstemmed |
Water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
title_sort |
water vapour line and continuum absorption in the thermal infrared—reconciling models and observations |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1256/qj.03.08 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1256%2Fqj.03.08 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1256/qj.03.08 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 129, issue 594, page 2949-2969 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1256/qj.03.08 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
129 |
container_issue |
594 |
container_start_page |
2949 |
op_container_end_page |
2969 |
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1784263989658648576 |