Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole
We have developed a new forward model for all sky radiative transfer calculations in the spectral range 10 to 2760 cm−1 . This new code, which we call σ-IASI/F2N, allows us to calculate in all-sky based on an original parametrization of the optical depth of atmospheric gases and clouds. Clouds are r...
Published in: | Remote Sensing of Clouds and the Atmosphere XXVIII |
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Adolfo Comerón, Evgueni I. Kassianov, Klaus Schäfer, Richard H. Picard, Konradin Weber
2023
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Online Access: | https://hdl.handle.net/11563/173915 https://doi.org/10.1117/12.2679103 |
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ftunivbasilicata:oai:iris.unibas.it:11563/173915 2024-01-07T09:40:02+01:00 Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara 2023 https://hdl.handle.net/11563/173915 https://doi.org/10.1117/12.2679103 eng eng Adolfo Comerón, Evgueni I. Kassianov, Klaus Schäfer, Richard H. Picard, Konradin Weber info:eu-repo/semantics/altIdentifier/isbn/9781510666894 info:eu-repo/semantics/altIdentifier/isbn/9781510666900 ispartofbook:Remote Sensing of Clouds and the Atmosphere XXVIII SPIE Remote Sensing volume:12730 https://hdl.handle.net/11563/173915 doi:10.1117/12.2679103 info:eu-repo/semantics/conferenceObject 2023 ftunivbasilicata https://doi.org/10.1117/12.2679103 2023-12-13T17:36:36Z We have developed a new forward model for all sky radiative transfer calculations in the spectral range 10 to 2760 cm−1 . This new code, which we call σ-IASI/F2N, allows us to calculate in all-sky based on an original parametrization of the optical depth of atmospheric gases and clouds. Clouds are represented through the atmospheric profiles of Liquid Water Content (LWC), Ice Water Content (IWC), and effective radii of both water droplets (re) and ice crystals (De). The cloud parametrization relies on suitable scaling laws, which make the radiative transfer equations for a cloudy atmosphere identical to those for a clear atmosphere. Therefore, the difficulties in applying a multiple-scattering algorithm to a partly cloudy atmosphere are avoided, and the computational efficiency is practically the same as that for a clear atmosphere. The new radiative transfer code has been coupled with an inverse scheme based on the Optimal Estimation methodology. The problem of dimensionality of the data and parameter space is handled by considering suitable transforms, which allow the representation of the radiances (data space) and the atmospheric state vector (parameter space) through a set of reduced components. The dimensionality is diminished through the random Projections transform for the radiance space, whereas we use the usual Principal Component Analysis for the parameter space. The scheme’s performance has been evaluated using the Infrared Atmospheric Sounder Interferometer (IASI) spectral radiances. The soundings are collocated with analyses from the European Centre for Medium-Range Forecasts (ECMWF) model. The ECMWF analyses provide the basic information, i.e., the first guess state vector to initialize the inverse scheme. The forward/inverse technique uses the whole IASI spectral coverage (645 to 2760 cm−1 ). As such, it is the first scheme for all sky using the full IASI spectrum to retrieve clouds and atmospheric parameters simultaneously. This new forward/inverse model is exemplified through the analysis of a ... Conference Object Antarc* Antarctica Università degli Studi della Basilicata: CINECA IRIS Remote Sensing of Clouds and the Atmosphere XXVIII 5 |
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Open Polar |
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Università degli Studi della Basilicata: CINECA IRIS |
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ftunivbasilicata |
language |
English |
description |
We have developed a new forward model for all sky radiative transfer calculations in the spectral range 10 to 2760 cm−1 . This new code, which we call σ-IASI/F2N, allows us to calculate in all-sky based on an original parametrization of the optical depth of atmospheric gases and clouds. Clouds are represented through the atmospheric profiles of Liquid Water Content (LWC), Ice Water Content (IWC), and effective radii of both water droplets (re) and ice crystals (De). The cloud parametrization relies on suitable scaling laws, which make the radiative transfer equations for a cloudy atmosphere identical to those for a clear atmosphere. Therefore, the difficulties in applying a multiple-scattering algorithm to a partly cloudy atmosphere are avoided, and the computational efficiency is practically the same as that for a clear atmosphere. The new radiative transfer code has been coupled with an inverse scheme based on the Optimal Estimation methodology. The problem of dimensionality of the data and parameter space is handled by considering suitable transforms, which allow the representation of the radiances (data space) and the atmospheric state vector (parameter space) through a set of reduced components. The dimensionality is diminished through the random Projections transform for the radiance space, whereas we use the usual Principal Component Analysis for the parameter space. The scheme’s performance has been evaluated using the Infrared Atmospheric Sounder Interferometer (IASI) spectral radiances. The soundings are collocated with analyses from the European Centre for Medium-Range Forecasts (ECMWF) model. The ECMWF analyses provide the basic information, i.e., the first guess state vector to initialize the inverse scheme. The forward/inverse technique uses the whole IASI spectral coverage (645 to 2760 cm−1 ). As such, it is the first scheme for all sky using the full IASI spectrum to retrieve clouds and atmospheric parameters simultaneously. This new forward/inverse model is exemplified through the analysis of a ... |
author2 |
Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara |
format |
Conference Object |
author |
Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara |
spellingShingle |
Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
author_facet |
Serio, Carmine Masiello, Guido Liuzzi, Giuliano Mastro, Pietro Maestri, Tiziano Martinazzo, Michele Masin, Fabrizio Venafra, Sara |
author_sort |
Serio, Carmine |
title |
Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
title_short |
Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
title_full |
Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
title_fullStr |
Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
title_full_unstemmed |
Simultaneous retrieval from the full IASI spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-IASI/F2N: the first day-night infrared retrieval of the Antarctica ozone hole |
title_sort |
simultaneous retrieval from the full iasi spectrum of cloud and atmospheric parameters using the new all-sky forward model sigma-iasi/f2n: the first day-night infrared retrieval of the antarctica ozone hole |
publisher |
Adolfo Comerón, Evgueni I. Kassianov, Klaus Schäfer, Richard H. Picard, Konradin Weber |
publishDate |
2023 |
url |
https://hdl.handle.net/11563/173915 https://doi.org/10.1117/12.2679103 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/9781510666894 info:eu-repo/semantics/altIdentifier/isbn/9781510666900 ispartofbook:Remote Sensing of Clouds and the Atmosphere XXVIII SPIE Remote Sensing volume:12730 https://hdl.handle.net/11563/173915 doi:10.1117/12.2679103 |
op_doi |
https://doi.org/10.1117/12.2679103 |
container_title |
Remote Sensing of Clouds and the Atmosphere XXVIII |
container_start_page |
5 |
_version_ |
1787430395107606528 |