Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces
International audience Remote sensing of the sea-ice thickness is one of the main objectives of the Ku-band radar altimeter SIRAL-CRYOSAT II mission. On the one hand, sea-ice thickness is derived from the measurement of the height of the freeboard of the floes, and based on isostasy, assuming that t...
Published in: | 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS) |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , |
Format: | Conference Object |
Language: | English |
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Online Access: | https://hal.science/hal-01077650 https://doi.org/10.1109/URSIGASS.2014.6929595 |
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Université de Nantes: HAL-UNIV-NANTES |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Dusséaux, Richard Afifi, Saddek Dechambre, Monique Legresy, Benoit Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Remote sensing of the sea-ice thickness is one of the main objectives of the Ku-band radar altimeter SIRAL-CRYOSAT II mission. On the one hand, sea-ice thickness is derived from the measurement of the height of the freeboard of the floes, and based on isostasy, assuming that the density of the water, the ice, as well as the snow, are known. On the other hand even if the snow load is known, the penetration of the electromagnetic waves into the snow strongly depends on the electrical and geophysical characteristics of the snow layer (density, temperature, permittivity, roughness). The remote sensing of the snow layer thickness (SLT) remains a real challenge and will be useful to correct the snow load for converting freeboard measurements from satellite altimetry into sea-ice thickness. If the dual frequency radar altimetry data show a good potential for remote sensing of snow and more generally of penetrating media [1], providing the SLT from Ku band data alone is highly motivated by the orbit of CRYOSAT designed to cover the entire Arctic. In this framework, a theoretical study, based on a 3D modelling of the scattering of electromagnetic waves by a stratified medium at normal incidence has been carried out in order to investigate and quantify the capacity of snow and ice penetration of Ku-band waves. The stratified medium is modelled as a snow layer considered as a stack of 2 sub-layers and the boundary layer at the bottom represented by a semi-infinite layer of ice-sea as shown on the figure 1. The roughness of each interface is taken into account and the small slope approximation (SSA) is used to determine the coherent and incoherent components of the scattered intensity [2-4]. It is demonstrated that the coherent intensity is the the specular direction but it depends on the rms-roughness heights and does not depends on the shape of the correlation function. The incoherent intensity depends even on the rms-roughness heights, but also on the shape of the correlati- n function. Several ... |
author2 |
ESTER - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique des Lasers, de Spectroscopie Optique et d’Opto-électronique (LAPLASO) Université Badji Mokhtar Annaba (UBMA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Dusséaux, Richard Afifi, Saddek Dechambre, Monique Legresy, Benoit |
author_facet |
Dusséaux, Richard Afifi, Saddek Dechambre, Monique Legresy, Benoit |
author_sort |
Dusséaux, Richard |
title |
Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
title_short |
Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
title_full |
Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
title_fullStr |
Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
title_full_unstemmed |
Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces |
title_sort |
simulations of the altimetric signal intensity from 3d-layered air/snow/sea-ice rough interfaces |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01077650 https://doi.org/10.1109/URSIGASS.2014.6929595 |
op_coverage |
Beijing, China |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI https://hal.science/hal-01077650 General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI, Aug 2014, Beijing, China. 2 p., ⟨10.1109/URSIGASS.2014.6929595⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1109/URSIGASS.2014.6929595 hal-01077650 https://hal.science/hal-01077650 doi:10.1109/URSIGASS.2014.6929595 |
op_doi |
https://doi.org/10.1109/URSIGASS.2014.6929595 |
container_title |
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS) |
container_start_page |
1 |
op_container_end_page |
2 |
_version_ |
1766349431902306304 |
spelling |
ftunivnantes:oai:HAL:hal-01077650v1 2023-05-15T15:19:15+02:00 Simulations of the altimetric signal intensity from 3D-layered air/snow/sea-ice rough interfaces Dusséaux, Richard Afifi, Saddek Dechambre, Monique Legresy, Benoit ESTER - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique des Lasers, de Spectroscopie Optique et d’Opto-électronique (LAPLASO) Université Badji Mokhtar Annaba (UBMA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Beijing, China 2014-08 https://hal.science/hal-01077650 https://doi.org/10.1109/URSIGASS.2014.6929595 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1109/URSIGASS.2014.6929595 hal-01077650 https://hal.science/hal-01077650 doi:10.1109/URSIGASS.2014.6929595 General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI https://hal.science/hal-01077650 General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI, Aug 2014, Beijing, China. 2 p., ⟨10.1109/URSIGASS.2014.6929595⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/conferenceObject Conference papers 2014 ftunivnantes https://doi.org/10.1109/URSIGASS.2014.6929595 2023-02-22T11:03:10Z International audience Remote sensing of the sea-ice thickness is one of the main objectives of the Ku-band radar altimeter SIRAL-CRYOSAT II mission. On the one hand, sea-ice thickness is derived from the measurement of the height of the freeboard of the floes, and based on isostasy, assuming that the density of the water, the ice, as well as the snow, are known. On the other hand even if the snow load is known, the penetration of the electromagnetic waves into the snow strongly depends on the electrical and geophysical characteristics of the snow layer (density, temperature, permittivity, roughness). The remote sensing of the snow layer thickness (SLT) remains a real challenge and will be useful to correct the snow load for converting freeboard measurements from satellite altimetry into sea-ice thickness. If the dual frequency radar altimetry data show a good potential for remote sensing of snow and more generally of penetrating media [1], providing the SLT from Ku band data alone is highly motivated by the orbit of CRYOSAT designed to cover the entire Arctic. In this framework, a theoretical study, based on a 3D modelling of the scattering of electromagnetic waves by a stratified medium at normal incidence has been carried out in order to investigate and quantify the capacity of snow and ice penetration of Ku-band waves. The stratified medium is modelled as a snow layer considered as a stack of 2 sub-layers and the boundary layer at the bottom represented by a semi-infinite layer of ice-sea as shown on the figure 1. The roughness of each interface is taken into account and the small slope approximation (SSA) is used to determine the coherent and incoherent components of the scattered intensity [2-4]. It is demonstrated that the coherent intensity is the the specular direction but it depends on the rms-roughness heights and does not depends on the shape of the correlation function. The incoherent intensity depends even on the rms-roughness heights, but also on the shape of the correlati- n function. Several ... Conference Object Arctic Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS) 1 2 |