Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation
International audience The Net Exchange Formulation (NEF) is an alternative to the usual radiative transfer equation. It was proposed in 1967 by Green [1] for atmospheric sciences and by Hottel [2] for engineering sciences. Until now, the NEF has been used only in a very few cases for atmospheric st...
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ftinsu:oai:HAL:hal-02024402v1 2023-12-17T10:26:20+01:00 Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation Eymet, V. Dufresne, J.L. Ricchiazzi, P. Blanco, Stéphane Fournier, Richard, A Laboratoire d'énergétique (L.E.) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) University of California Santa Barbara (UC Santa Barbara) University of California (UC) 2004-11 https://hal.science/hal-02024402 https://hal.science/hal-02024402/document https://hal.science/hal-02024402/file/main.pdf https://doi.org/10.1016/j.atmosres.2004.03.017 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.atmosres.2004.03.017 hal-02024402 https://hal.science/hal-02024402 https://hal.science/hal-02024402/document https://hal.science/hal-02024402/file/main.pdf doi:10.1016/j.atmosres.2004.03.017 info:eu-repo/semantics/OpenAccess ISSN: 0169-8095 Atmospheric Research https://hal.science/hal-02024402 Atmospheric Research, 2004, 72 (1-4), pp.239-261. ⟨10.1016/j.atmosres.2004.03.017⟩ terrestrial GCM * Corresponding author Present address : Laboratoire d'Energétique scattering Net-exchange formulation clouds UFR-PCA Radiation [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] info:eu-repo/semantics/article Journal articles 2004 ftinsu https://doi.org/10.1016/j.atmosres.2004.03.017 2023-11-22T17:46:03Z International audience The Net Exchange Formulation (NEF) is an alternative to the usual radiative transfer equation. It was proposed in 1967 by Green [1] for atmospheric sciences and by Hottel [2] for engineering sciences. Until now, the NEF has been used only in a very few cases for atmospheric studies. Recently we have developped a longwave radiative code based on this formulation for a GCM of the Mars planet. Here, we will present results for the Earth atmosphere, obtained with a Monte Carlo Method based on the NEF. In this method, fluxes are not addressed any more. The basic variables are the net exchange rates (NER) between each pair of atmospheric layer (i, j), i.e. the radiative power emitted by i and absorbed by j minus the radiative power emitted by j and absorbed by i. The graphical representation of the NER matrix highlights the radiative exchanges that dominate the radiative budget of the atmosphere and allows one to have a very good insight of the radiative exchanges. Results will be presented for clear sky atmospheres with Mid-Latitude Summer and Sub-Arctic Winter temperature profiles, and for the same atmospheres with three different types of clouds. The effect of scattering on longwave radiative exchanges will also be analysed. Article in Journal/Newspaper Arctic Institut national des sciences de l'Univers: HAL-INSU Arctic Ner ENVELOPE(6.622,6.622,62.612,62.612) Atmospheric Research 72 1-4 239 261 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
terrestrial GCM * Corresponding author Present address : Laboratoire d'Energétique scattering Net-exchange formulation clouds UFR-PCA Radiation [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] |
spellingShingle |
terrestrial GCM * Corresponding author Present address : Laboratoire d'Energétique scattering Net-exchange formulation clouds UFR-PCA Radiation [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] Eymet, V. Dufresne, J.L. Ricchiazzi, P. Blanco, Stéphane Fournier, Richard, A Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
topic_facet |
terrestrial GCM * Corresponding author Present address : Laboratoire d'Energétique scattering Net-exchange formulation clouds UFR-PCA Radiation [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] |
description |
International audience The Net Exchange Formulation (NEF) is an alternative to the usual radiative transfer equation. It was proposed in 1967 by Green [1] for atmospheric sciences and by Hottel [2] for engineering sciences. Until now, the NEF has been used only in a very few cases for atmospheric studies. Recently we have developped a longwave radiative code based on this formulation for a GCM of the Mars planet. Here, we will present results for the Earth atmosphere, obtained with a Monte Carlo Method based on the NEF. In this method, fluxes are not addressed any more. The basic variables are the net exchange rates (NER) between each pair of atmospheric layer (i, j), i.e. the radiative power emitted by i and absorbed by j minus the radiative power emitted by j and absorbed by i. The graphical representation of the NER matrix highlights the radiative exchanges that dominate the radiative budget of the atmosphere and allows one to have a very good insight of the radiative exchanges. Results will be presented for clear sky atmospheres with Mid-Latitude Summer and Sub-Arctic Winter temperature profiles, and for the same atmospheres with three different types of clouds. The effect of scattering on longwave radiative exchanges will also be analysed. |
author2 |
Laboratoire d'énergétique (L.E.) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) University of California Santa Barbara (UC Santa Barbara) University of California (UC) |
format |
Article in Journal/Newspaper |
author |
Eymet, V. Dufresne, J.L. Ricchiazzi, P. Blanco, Stéphane Fournier, Richard, A |
author_facet |
Eymet, V. Dufresne, J.L. Ricchiazzi, P. Blanco, Stéphane Fournier, Richard, A |
author_sort |
Eymet, V. |
title |
Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
title_short |
Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
title_full |
Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
title_fullStr |
Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
title_full_unstemmed |
Longwave radiative analysis of cloudy scattering atmospheres using a Net Exchange Formulation |
title_sort |
longwave radiative analysis of cloudy scattering atmospheres using a net exchange formulation |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-02024402 https://hal.science/hal-02024402/document https://hal.science/hal-02024402/file/main.pdf https://doi.org/10.1016/j.atmosres.2004.03.017 |
long_lat |
ENVELOPE(6.622,6.622,62.612,62.612) |
geographic |
Arctic Ner |
geographic_facet |
Arctic Ner |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 0169-8095 Atmospheric Research https://hal.science/hal-02024402 Atmospheric Research, 2004, 72 (1-4), pp.239-261. ⟨10.1016/j.atmosres.2004.03.017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.atmosres.2004.03.017 hal-02024402 https://hal.science/hal-02024402 https://hal.science/hal-02024402/document https://hal.science/hal-02024402/file/main.pdf doi:10.1016/j.atmosres.2004.03.017 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.atmosres.2004.03.017 |
container_title |
Atmospheric Research |
container_volume |
72 |
container_issue |
1-4 |
container_start_page |
239 |
op_container_end_page |
261 |
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1785578059976409088 |