Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard)
International audience Arctic snow cover dynamics exhibit strong changes in terms of extent and duration due to recent climate changeconditions (Mudryk et al., 2018; Lemke & Jacobi, 2011). In this context, innovative observation methods arehelpful for a better comprehension of the role of the sn...
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Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.archives-ouvertes.fr/hal-02158032 |
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ftccsdartic:oai:HAL:hal-02158032v1 |
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record_format |
openpolar |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Dedieu, Jean-Pierre Negrello, Charlène Jacobi, Hans-Werner Baladima, Foteini Duguay, Yannick Bernard, Eric Boike, Julia Gallet, Jean-Charles Westermann, Sebastian Wendleder, Anna Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
topic_facet |
[SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience Arctic snow cover dynamics exhibit strong changes in terms of extent and duration due to recent climate changeconditions (Mudryk et al., 2018; Lemke & Jacobi, 2011). In this context, innovative observation methods arehelpful for a better comprehension of the role of the snow for climate research and hydrology. The spatialvariability of snow properties is here addressed for the Ny-Ålesund area, Svalbard (N 78◦55’ / E 11◦55’) usingsatellite radar images in the X-band. This remote sensing method removes the limitations and ambiguities ofoptical imaging limited by the polar night and cloud cover.This study contributes to the “Precip-A2” project (OSUG@2020, Grenoble, France), focusing on snow and itsinteraction with the atmosphere: chemistry, radiative processes, and precipitation. One sub-task of the projectis dedicated to X-band active radar measurements (SAR) to retrieve physical properties of arctic snow (spatialvariability, depth estimation), involving consistent ground network including a large international partnership(France, Germany, Norway, Italy).1. Climatology context: for Ny-Alesund area, a change in the occurrence frequency of source region of air masseshas been identified. Consequently, an increase in temperature and water vapour content was detected (Dahlkeand Maturilli, 2016). Temperature time series since 1969 were analyzed and an increase in annual temperature of∼0.07 C per year was found. This increase is mainly driven by a positive seasonal trend in winter (DJF); thus,influencing the fraction of annual precipitation falling as snow / rain.2. Remote sensing application: a set of ten SAR images was provided by the DLR during winter 2017 from theTerraSAR-X sensor (3.1 cm, 9.6 GHz) in dual co-pol HH, VV (2.5 m resolution). Descending and ascending orbitswere combined at 35-38◦incidence angles to avoid topographic constraints. The data were processed with theESA “SNAP” toolbox. Output products: non-polarimetric analysis providing regular snow mapping from Marchto June 2017 ... |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Laboratoire Géomatique et foncier (GeF) Conservatoire National des Arts et Métiers CNAM (CNAM) Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Norwegian Polar Institute Department of Geosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) |
format |
Conference Object |
author |
Dedieu, Jean-Pierre Negrello, Charlène Jacobi, Hans-Werner Baladima, Foteini Duguay, Yannick Bernard, Eric Boike, Julia Gallet, Jean-Charles Westermann, Sebastian Wendleder, Anna |
author_facet |
Dedieu, Jean-Pierre Negrello, Charlène Jacobi, Hans-Werner Baladima, Foteini Duguay, Yannick Bernard, Eric Boike, Julia Gallet, Jean-Charles Westermann, Sebastian Wendleder, Anna |
author_sort |
Dedieu, Jean-Pierre |
title |
Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
title_short |
Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
title_full |
Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
title_fullStr |
Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
title_full_unstemmed |
Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) |
title_sort |
impact of recent climate change in the arctic on snow physical parameters retrieval using sar data (svalbard) |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02158032 |
op_coverage |
Vienne, Austria |
geographic |
Arctic Norway Ny-Ålesund Svalbard |
geographic_facet |
Arctic Norway Ny-Ålesund Svalbard |
genre |
Arctic Climate change Ny Ålesund Ny-Ålesund polar night Svalbard |
genre_facet |
Arctic Climate change Ny Ålesund Ny-Ålesund polar night Svalbard |
op_source |
European Geosciences Union General Assembly 2019 https://hal.archives-ouvertes.fr/hal-02158032 European Geosciences Union General Assembly 2019, Apr 2019, Vienne, Austria. pp.EGU2019-2424 https://www.egu2019.eu/ |
op_relation |
hal-02158032 https://hal.archives-ouvertes.fr/hal-02158032 |
_version_ |
1766330135491903488 |
spelling |
ftccsdartic:oai:HAL:hal-02158032v1 2023-05-15T14:58:03+02:00 Impact of recent climate change in the Arctic on snow physical parameters retrieval using SAR data (Svalbard) Dedieu, Jean-Pierre Negrello, Charlène Jacobi, Hans-Werner Baladima, Foteini Duguay, Yannick Bernard, Eric Boike, Julia Gallet, Jean-Charles Westermann, Sebastian Wendleder, Anna Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Laboratoire Géomatique et foncier (GeF) Conservatoire National des Arts et Métiers CNAM (CNAM) Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Norwegian Polar Institute Department of Geosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Vienne, Austria 2019-04-07 https://hal.archives-ouvertes.fr/hal-02158032 en eng HAL CCSD hal-02158032 https://hal.archives-ouvertes.fr/hal-02158032 European Geosciences Union General Assembly 2019 https://hal.archives-ouvertes.fr/hal-02158032 European Geosciences Union General Assembly 2019, Apr 2019, Vienne, Austria. pp.EGU2019-2424 https://www.egu2019.eu/ [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/conferenceObject Conference papers 2019 ftccsdartic 2021-12-05T02:08:54Z International audience Arctic snow cover dynamics exhibit strong changes in terms of extent and duration due to recent climate changeconditions (Mudryk et al., 2018; Lemke & Jacobi, 2011). In this context, innovative observation methods arehelpful for a better comprehension of the role of the snow for climate research and hydrology. The spatialvariability of snow properties is here addressed for the Ny-Ålesund area, Svalbard (N 78◦55’ / E 11◦55’) usingsatellite radar images in the X-band. This remote sensing method removes the limitations and ambiguities ofoptical imaging limited by the polar night and cloud cover.This study contributes to the “Precip-A2” project (OSUG@2020, Grenoble, France), focusing on snow and itsinteraction with the atmosphere: chemistry, radiative processes, and precipitation. One sub-task of the projectis dedicated to X-band active radar measurements (SAR) to retrieve physical properties of arctic snow (spatialvariability, depth estimation), involving consistent ground network including a large international partnership(France, Germany, Norway, Italy).1. Climatology context: for Ny-Alesund area, a change in the occurrence frequency of source region of air masseshas been identified. Consequently, an increase in temperature and water vapour content was detected (Dahlkeand Maturilli, 2016). Temperature time series since 1969 were analyzed and an increase in annual temperature of∼0.07 C per year was found. This increase is mainly driven by a positive seasonal trend in winter (DJF); thus,influencing the fraction of annual precipitation falling as snow / rain.2. Remote sensing application: a set of ten SAR images was provided by the DLR during winter 2017 from theTerraSAR-X sensor (3.1 cm, 9.6 GHz) in dual co-pol HH, VV (2.5 m resolution). Descending and ascending orbitswere combined at 35-38◦incidence angles to avoid topographic constraints. The data were processed with theESA “SNAP” toolbox. Output products: non-polarimetric analysis providing regular snow mapping from Marchto June 2017 ... Conference Object Arctic Climate change Ny Ålesund Ny-Ålesund polar night Svalbard Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Norway Ny-Ålesund Svalbard |