Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land
Radar backscattering coefficients from synthetic aperture radars and scatterometers are commonly used to characterize the land surface properties and monitor their temporal evolution. Radar altimetry is mostly used, over land, to provide time series of water stage of lakes, rivers and wetlands and t...
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/142250 2024-05-19T07:36:30+00:00 Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land FRAPPART, Frédéric BLAREL, Fabien PAPA, Fabrice PRIGENT, Catherine MOUGIN, Éric PAILLOU, Philippe BAUP, Frédéric ZEIGER, Pierre SALAMEH, Edward DARROZES, José BOURREL, Luc RÉMY, Frédérique 2021 https://doi.org/10.1016/j.asr.2020.06.043 en eng Elsevier 0273-1177 doi:10.1016/j.asr.2020.06.043 Radar altimetry Backscattering Land surface properties Planète et Univers [physics]/Interfaces continentales environnement Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] Sciences de l'ingénieur [physics]/Traitement du signal et de l'image Sciences de l'environnement/Ingénierie de l'environnement Article de revue 2021 ftoskarbordeaux https://doi.org/10.1016/j.asr.2020.06.043 2024-04-22T01:36:30Z Radar backscattering coefficients from synthetic aperture radars and scatterometers are commonly used to characterize the land surface properties and monitor their temporal evolution. Radar altimetry is mostly used, over land, to provide time series of water stage of lakes, rivers and wetlands and the topography of the ice sheets. Very few studies used the radar altimetry backscattering coefficients for geophysical applications except to determine changes in Arctic lakes state surface, surface soil moisture in semi-arid environments or flood extent at high latitude. As radar altimetry missions acquired data in four frequency bands (mostly C and Ku but also S and Ka), this study proposes the first thorough analysis of the backscattering signatures of land surfaces using observations from ERS-2, Jason-1, ENVISAT, Jason-2 and SARAL radar altimetry missions The spatial and temporal variations of several altimetric information (backscattering coefficient, waveform peakiness, leading edge width and trailing edge slope) are examined at global scale, for each frequency band separately, as well as for their differences. Their relationship with related variations in the surface characteristics (i.e., soil type, soil moisture, presence of water and snow) are evidenced. Finally, spatial patterns and temporal variations computed over selected regions, representative of the major bioclimatic areas, are related to their surface properties and changes. Article in Journal/Newspaper Arctic OSKAR Bordeaux (Open Science Knowledge ARchive) Advances in Space Research 68 2 989 1012 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Radar altimetry Backscattering Land surface properties Planète et Univers [physics]/Interfaces continentales environnement Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] Sciences de l'ingénieur [physics]/Traitement du signal et de l'image Sciences de l'environnement/Ingénierie de l'environnement |
spellingShingle |
Radar altimetry Backscattering Land surface properties Planète et Univers [physics]/Interfaces continentales environnement Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] Sciences de l'ingénieur [physics]/Traitement du signal et de l'image Sciences de l'environnement/Ingénierie de l'environnement FRAPPART, Frédéric BLAREL, Fabien PAPA, Fabrice PRIGENT, Catherine MOUGIN, Éric PAILLOU, Philippe BAUP, Frédéric ZEIGER, Pierre SALAMEH, Edward DARROZES, José BOURREL, Luc RÉMY, Frédérique Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
topic_facet |
Radar altimetry Backscattering Land surface properties Planète et Univers [physics]/Interfaces continentales environnement Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] Sciences de l'ingénieur [physics]/Traitement du signal et de l'image Sciences de l'environnement/Ingénierie de l'environnement |
description |
Radar backscattering coefficients from synthetic aperture radars and scatterometers are commonly used to characterize the land surface properties and monitor their temporal evolution. Radar altimetry is mostly used, over land, to provide time series of water stage of lakes, rivers and wetlands and the topography of the ice sheets. Very few studies used the radar altimetry backscattering coefficients for geophysical applications except to determine changes in Arctic lakes state surface, surface soil moisture in semi-arid environments or flood extent at high latitude. As radar altimetry missions acquired data in four frequency bands (mostly C and Ku but also S and Ka), this study proposes the first thorough analysis of the backscattering signatures of land surfaces using observations from ERS-2, Jason-1, ENVISAT, Jason-2 and SARAL radar altimetry missions The spatial and temporal variations of several altimetric information (backscattering coefficient, waveform peakiness, leading edge width and trailing edge slope) are examined at global scale, for each frequency band separately, as well as for their differences. Their relationship with related variations in the surface characteristics (i.e., soil type, soil moisture, presence of water and snow) are evidenced. Finally, spatial patterns and temporal variations computed over selected regions, representative of the major bioclimatic areas, are related to their surface properties and changes. |
format |
Article in Journal/Newspaper |
author |
FRAPPART, Frédéric BLAREL, Fabien PAPA, Fabrice PRIGENT, Catherine MOUGIN, Éric PAILLOU, Philippe BAUP, Frédéric ZEIGER, Pierre SALAMEH, Edward DARROZES, José BOURREL, Luc RÉMY, Frédérique |
author_facet |
FRAPPART, Frédéric BLAREL, Fabien PAPA, Fabrice PRIGENT, Catherine MOUGIN, Éric PAILLOU, Philippe BAUP, Frédéric ZEIGER, Pierre SALAMEH, Edward DARROZES, José BOURREL, Luc RÉMY, Frédérique |
author_sort |
FRAPPART, Frédéric |
title |
Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
title_short |
Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
title_full |
Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
title_fullStr |
Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
title_full_unstemmed |
Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land |
title_sort |
backscattering signatures at ka, ku, c and s bands from low resolution radar altimetry over land |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.asr.2020.06.043 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
0273-1177 doi:10.1016/j.asr.2020.06.043 |
op_doi |
https://doi.org/10.1016/j.asr.2020.06.043 |
container_title |
Advances in Space Research |
container_volume |
68 |
container_issue |
2 |
container_start_page |
989 |
op_container_end_page |
1012 |
_version_ |
1799475632989536256 |