SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission
International audience L-band microwave (1.4 GHz) brightness temperature (TB) observations of the Soil Moisture and Ocean Salinity (SMOS) satellite are used to retrieve global soil moisture data, taking advantage of the large difference between the dielectric constant of dry soil and water. The retr...
Main Authors: | , , , , , , , , , , , , , , |
---|---|
Other Authors: | , , , , , , , , , , , , , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal.inrae.fr/hal-02742610 |
id |
ftccsdartic:oai:HAL:hal-02742610v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Bircher, Simone Richaume, Philippe Demontoux, François Mahmoodi, Ali Jonard, François Weihermüller, Lutz Andreasen, Mie Ikonen, Jaakko Vehviläinen, Juho Razafindratsima, Stephen Rautiainen, Kimmo Schwank, Mike Mialon, Arnaud Wigneron, Jean-Pierre Kerr, Yann H. SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience L-band microwave (1.4 GHz) brightness temperature (TB) observations of the Soil Moisture and Ocean Salinity (SMOS) satellite are used to retrieve global soil moisture data, taking advantage of the large difference between the dielectric constant of dry soil and water. The retrieval is based on the L-band Microwave Emission of the Biosphere (L-MEB) model using tuning parameters derived from study sites in dry and temperate climate zones. Thus, the aim of the SMOSHiLat project (ESA’s STSE Changing Earth Science Network) is to improve our understanding of L-band emissions and supporting SMOS data quality in more northern climate zones covered by pronounced organic surface layers. A database is created including L-band TB and dielectric constant measurements of organic-rich soils, mainly from (1) Sodankylä, Finland (Finish Meteorological Institute), and (2) Gludsted, Denmark (HOBE). Additional organic samples are available from Islay, Scotland, and the West Siberian Plain, Russia. The L-band dielectric constant measurements conducted at the IMS Laboratory (Bordeaux, France), show no distinct variability between a range of humus types encountered in the four regions. Due to the increased bound water fraction in porous organic material dielectric constants are consistently lower than measured in the underlying sandy mineral soils. Hence, one function was fitted through all organic soil moisture – dielectric constant couples, and tested in L-MEB by means of the tower-based ELBARA radiometer dataset acquired at the Research Center Jülich using Danish organic-rich soil. The derived relation proved satisfactory, and consequently, was implemented in the SMOS Soil Moisture Level 2 Prototype Processor (SML2PP). First runs were conducted over the Sodankylä test site and compared with retrieved soil moisture using the Dobson and Mironov dielectric mixing models. Results demonstrated significantly wetter retrieved soil moisture when using the organic fit function. This is in better agreement with an in ... |
author2 |
Centre d'études spatiales de la biosphère (CESBIO) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-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) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Université Sciences et Technologies - Bordeaux 1 Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association Department of Geosciences and Natural Resource Management Copenhagen (IGN) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) Finnish Meteorological Institute (FMI) Swiss Federal Institute for Forest, Snow and Landscape Research WSL Interactions Sol Plante Atmosphère (UMR ISPA) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro) European Space Agency (ESA). INT. |
format |
Conference Object |
author |
Bircher, Simone Richaume, Philippe Demontoux, François Mahmoodi, Ali Jonard, François Weihermüller, Lutz Andreasen, Mie Ikonen, Jaakko Vehviläinen, Juho Razafindratsima, Stephen Rautiainen, Kimmo Schwank, Mike Mialon, Arnaud Wigneron, Jean-Pierre Kerr, Yann H. |
author_facet |
Bircher, Simone Richaume, Philippe Demontoux, François Mahmoodi, Ali Jonard, François Weihermüller, Lutz Andreasen, Mie Ikonen, Jaakko Vehviläinen, Juho Razafindratsima, Stephen Rautiainen, Kimmo Schwank, Mike Mialon, Arnaud Wigneron, Jean-Pierre Kerr, Yann H. |
author_sort |
Bircher, Simone |
title |
SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
title_short |
SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
title_full |
SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
title_fullStr |
SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
title_full_unstemmed |
SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission |
title_sort |
smoshilat: microwave l-band emissions of organic-rich soils in the northern cold climate zone in support of the smos mission |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.inrae.fr/hal-02742610 |
op_coverage |
Madrid, Spain |
long_lat |
ENVELOPE(59.717,59.717,-67.350,-67.350) ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Islay Sodankylä |
geographic_facet |
Islay Sodankylä |
genre |
Sodankylä |
genre_facet |
Sodankylä |
op_source |
2. SMOS Science Conference https://hal.inrae.fr/hal-02742610 2. SMOS Science Conference, European Space Agency (ESA). INT., May 2015, Madrid, Spain |
op_relation |
hal-02742610 https://hal.inrae.fr/hal-02742610 PRODINRA: 305845 |
_version_ |
1766197775572140032 |
spelling |
ftccsdartic:oai:HAL:hal-02742610v1 2023-05-15T18:20:16+02:00 SMOSHiLat: microwave L-band emissions of organic-rich soils in the Northern cold climate zone in support of the SMOS Mission Bircher, Simone Richaume, Philippe Demontoux, François Mahmoodi, Ali Jonard, François Weihermüller, Lutz Andreasen, Mie Ikonen, Jaakko Vehviläinen, Juho Razafindratsima, Stephen Rautiainen, Kimmo Schwank, Mike Mialon, Arnaud Wigneron, Jean-Pierre Kerr, Yann H. Centre d'études spatiales de la biosphère (CESBIO) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-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) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Université Sciences et Technologies - Bordeaux 1 Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association Department of Geosciences and Natural Resource Management Copenhagen (IGN) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) Finnish Meteorological Institute (FMI) Swiss Federal Institute for Forest, Snow and Landscape Research WSL Interactions Sol Plante Atmosphère (UMR ISPA) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro) European Space Agency (ESA). INT. Madrid, Spain 2015-05-25 https://hal.inrae.fr/hal-02742610 en eng HAL CCSD hal-02742610 https://hal.inrae.fr/hal-02742610 PRODINRA: 305845 2. SMOS Science Conference https://hal.inrae.fr/hal-02742610 2. SMOS Science Conference, European Space Agency (ESA). INT., May 2015, Madrid, Spain [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/conferenceObject Conference papers 2015 ftccsdartic 2021-12-19T01:11:57Z International audience L-band microwave (1.4 GHz) brightness temperature (TB) observations of the Soil Moisture and Ocean Salinity (SMOS) satellite are used to retrieve global soil moisture data, taking advantage of the large difference between the dielectric constant of dry soil and water. The retrieval is based on the L-band Microwave Emission of the Biosphere (L-MEB) model using tuning parameters derived from study sites in dry and temperate climate zones. Thus, the aim of the SMOSHiLat project (ESA’s STSE Changing Earth Science Network) is to improve our understanding of L-band emissions and supporting SMOS data quality in more northern climate zones covered by pronounced organic surface layers. A database is created including L-band TB and dielectric constant measurements of organic-rich soils, mainly from (1) Sodankylä, Finland (Finish Meteorological Institute), and (2) Gludsted, Denmark (HOBE). Additional organic samples are available from Islay, Scotland, and the West Siberian Plain, Russia. The L-band dielectric constant measurements conducted at the IMS Laboratory (Bordeaux, France), show no distinct variability between a range of humus types encountered in the four regions. Due to the increased bound water fraction in porous organic material dielectric constants are consistently lower than measured in the underlying sandy mineral soils. Hence, one function was fitted through all organic soil moisture – dielectric constant couples, and tested in L-MEB by means of the tower-based ELBARA radiometer dataset acquired at the Research Center Jülich using Danish organic-rich soil. The derived relation proved satisfactory, and consequently, was implemented in the SMOS Soil Moisture Level 2 Prototype Processor (SML2PP). First runs were conducted over the Sodankylä test site and compared with retrieved soil moisture using the Dobson and Mironov dielectric mixing models. Results demonstrated significantly wetter retrieved soil moisture when using the organic fit function. This is in better agreement with an in ... Conference Object Sodankylä Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Islay ENVELOPE(59.717,59.717,-67.350,-67.350) Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) |