Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data
Arctic snow cover dynamics exhibit modification in terms of extent and duration due to recent changes in climate, i.e. increasing temperatures and changing precipitation patterns, i.e. winter rain-on-snow events (WROS). Remote sensing methods based on active radar images (SAR) have demonstrated a si...
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ftdlr:oai:elib.dlr.de:195056 2024-05-19T07:33:18+00:00 Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data Dedieu, Jean-Pierre Van Noort, Joep Montpetit, Benoit Levistre, Manon Vauclare, Simon Wendleder, Anna Boike, Julia Gallet, Jean-Charles Jacobi, Hans-Werner 2023 https://elib.dlr.de/195056/ unknown Dedieu, Jean-Pierre und Van Noort, Joep und Montpetit, Benoit und Levistre, Manon und Vauclare, Simon und Wendleder, Anna und Boike, Julia und Gallet, Jean-Charles und Jacobi, Hans-Werner (2023) Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data. EGU General Assembly 2023, 2023-04-23 - 2023-04-28, Vienna, Austria. Internationales Bodensegment Konferenzbeitrag NonPeerReviewed 2023 ftdlr 2024-04-25T01:07:17Z Arctic snow cover dynamics exhibit modification in terms of extent and duration due to recent changes in climate, i.e. increasing temperatures and changing precipitation patterns, i.e. winter rain-on-snow events (WROS). Remote sensing methods based on active radar images (SAR) have demonstrated a significant advantage for snow monitoring, (i) capturing physical and dielectric properties, (ii) overcoming the weakness of optical images limited by cloud cover and polar night. The aim of this study is dedicated to the analysis of the spatial and temporal variability of snow cover in the Ny-Ålesund area on the BrØgger peninsula, Svalbard (N 78°55’ / E 11° 55’). In-situ snow measurements from two automated weather stations (Ny-Ålesund, and Bayelva), regular snowpits around the village and in spring on the Austre Loéven, were compared with the spaceborne dataset. The RADARSAT Constellation Mission (RCM) is comprised of three satellites into closely coordinated orbits operating in C-band (5.4 GHz, 5.5 cm). The high temporal (4-day repeat cycle) and spatial resolution of the sensors in Quad-Pol mode (9-m) or Compact-Pol mode (5-m) provide a helpful performance for detecting the spatial variability of snow properties. RCM data are also compared to images of the TerraSAR-X satellite (DLR, Germany) operated in X-band (9.6 GHz, 3.1 cm) at 5-m spatial resolution. Both RCM QP mode and TSX data were acquired with medium incidence angles (33° to 39°) providing better snow penetration for volume backscattering. The RCM CP data were only available under low (23°) and high (53°) beam angles. The following two snow properties were analyzed: WROS detection: the focus was set on the 16-17 March 2022 event (+ 5.5 °C, 62 mm). RCM data at cross-polarization VH or HV can clearly detect the impact of rain on snow, indicating an intensity drop of -10 dB, even on the glacier at high elevation. Snow depth retrieval: the study covers spring 2021 (March-June) and the complete winter season 2021-2022 (November-June). - Concerning QP mode, better ... Conference Object Arctic Arctic glacier Ny Ålesund Ny-Ålesund polar night Svalbard German Aerospace Center: elib - DLR electronic library |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
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Internationales Bodensegment |
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Internationales Bodensegment Dedieu, Jean-Pierre Van Noort, Joep Montpetit, Benoit Levistre, Manon Vauclare, Simon Wendleder, Anna Boike, Julia Gallet, Jean-Charles Jacobi, Hans-Werner Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
topic_facet |
Internationales Bodensegment |
description |
Arctic snow cover dynamics exhibit modification in terms of extent and duration due to recent changes in climate, i.e. increasing temperatures and changing precipitation patterns, i.e. winter rain-on-snow events (WROS). Remote sensing methods based on active radar images (SAR) have demonstrated a significant advantage for snow monitoring, (i) capturing physical and dielectric properties, (ii) overcoming the weakness of optical images limited by cloud cover and polar night. The aim of this study is dedicated to the analysis of the spatial and temporal variability of snow cover in the Ny-Ålesund area on the BrØgger peninsula, Svalbard (N 78°55’ / E 11° 55’). In-situ snow measurements from two automated weather stations (Ny-Ålesund, and Bayelva), regular snowpits around the village and in spring on the Austre Loéven, were compared with the spaceborne dataset. The RADARSAT Constellation Mission (RCM) is comprised of three satellites into closely coordinated orbits operating in C-band (5.4 GHz, 5.5 cm). The high temporal (4-day repeat cycle) and spatial resolution of the sensors in Quad-Pol mode (9-m) or Compact-Pol mode (5-m) provide a helpful performance for detecting the spatial variability of snow properties. RCM data are also compared to images of the TerraSAR-X satellite (DLR, Germany) operated in X-band (9.6 GHz, 3.1 cm) at 5-m spatial resolution. Both RCM QP mode and TSX data were acquired with medium incidence angles (33° to 39°) providing better snow penetration for volume backscattering. The RCM CP data were only available under low (23°) and high (53°) beam angles. The following two snow properties were analyzed: WROS detection: the focus was set on the 16-17 March 2022 event (+ 5.5 °C, 62 mm). RCM data at cross-polarization VH or HV can clearly detect the impact of rain on snow, indicating an intensity drop of -10 dB, even on the glacier at high elevation. Snow depth retrieval: the study covers spring 2021 (March-June) and the complete winter season 2021-2022 (November-June). - Concerning QP mode, better ... |
format |
Conference Object |
author |
Dedieu, Jean-Pierre Van Noort, Joep Montpetit, Benoit Levistre, Manon Vauclare, Simon Wendleder, Anna Boike, Julia Gallet, Jean-Charles Jacobi, Hans-Werner |
author_facet |
Dedieu, Jean-Pierre Van Noort, Joep Montpetit, Benoit Levistre, Manon Vauclare, Simon Wendleder, Anna Boike, Julia Gallet, Jean-Charles Jacobi, Hans-Werner |
author_sort |
Dedieu, Jean-Pierre |
title |
Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
title_short |
Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
title_full |
Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
title_fullStr |
Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
title_full_unstemmed |
Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data |
title_sort |
snow cover monitoring in the arctic (svalbard) with radarsat constellation mission (rcm). comparison with in-situ measurements and terrasar-x data |
publishDate |
2023 |
url |
https://elib.dlr.de/195056/ |
genre |
Arctic Arctic glacier Ny Ålesund Ny-Ålesund polar night Svalbard |
genre_facet |
Arctic Arctic glacier Ny Ålesund Ny-Ålesund polar night Svalbard |
op_relation |
Dedieu, Jean-Pierre und Van Noort, Joep und Montpetit, Benoit und Levistre, Manon und Vauclare, Simon und Wendleder, Anna und Boike, Julia und Gallet, Jean-Charles und Jacobi, Hans-Werner (2023) Snow cover monitoring in the Arctic (Svalbard) with RADARSAT Constellation Mission (RCM). Comparison with in-situ measurements and TerraSAR-X data. EGU General Assembly 2023, 2023-04-23 - 2023-04-28, Vienna, Austria. |
_version_ |
1799471382544777216 |