Conference
Comparison of SMOS level 2 and level 3 soil moisture at the SMOSREX site
| العنوان: | Comparison of SMOS level 2 and level 3 soil moisture at the SMOSREX site |
|---|---|
| المؤلفون: | Mialon, Arnaud, Cabot, François, Guibert, Sarah, Ahmad, Al Bitar, Richaume, Philippe, Wigneron, Jean-Pierre, Pellarin, Thierry, Tarot, Stéphane, Bircher, Simone, Grant, Jennifer, Rodriguez‐fernandez, Nemesio, Kerr, Yann H. |
| المساهمون: | Centre d'études spatiales de la biosphère (CESBIO), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-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 national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre National d’Etudes Spatiales, 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), Laboratoire d'étude des transferts en hydrologie et environnement (LTHE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Département Infrastructures de Recherche et Systèmes d'Information (IRSI), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Skane University Hospital Lund, Université McGill Montréal . CAN. |
| المصدر: | 4. International Symposium on Soil Water Measurement using Capacitance, Impedance and Time Domain Transmission (TDT) https://hal.inrae.fr/hal-02744118 4. International Symposium on Soil Water Measurement using Capacitance, Impedance and Time Domain Transmission (TDT), Université McGill [Montréal]. CAN., Jul 2014, Pointe Claire, Quebec, Canada |
| بيانات النشر: | HAL CCSD PALTIN International Inc. |
| سنة النشر: | 2014 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
| جغرافية الموضوع: | Pointe Claire, Quebec |
| Time: | Pointe Claire, Quebec, Canada |
| الوصف: | International audience ; The ESA (European Space Agency) satellite mission SMOS (Soil Moisture and Ocean Salinity) was launched in November 2009 and has been providing data on ocean salinity and soil moisture over continental surfaces for the last 4 years. SMOS satellite is a passive L-band (1.4 GHz) interferometer that measures the surface soil moisture (top 5cm) with an overpass time at 6 am and 6 pm (local time) and a radiometric resolution of ~ 43 km in average. With a quasi polar orbit, it covers the entire Earth surface in 3 days. The CATDS (Centre Aval de Traitements des Données SMOS) ground segment developed by the French space agency CNES, provides so called “level 3” soil moisture products that are time aggregated products, on the EASE (Equal Area Scalable Earth) Grid with a ~25 km spatial resolution. The retrieval algorithm is based on the radiative model L-MEB (L-band Microwave Emission of the Biosphere). The aim of this paper is to present the different soil moisture products that are delivered by the CATDS such as daily products, 3-day and 10-day composites, monthly averages, discuss different features of the product contents, and also presenting the validation of the SMOS data. Several in-situ sites are equipped with various soil moisture sensors providing soil moisture measurements for different climate areas. For instance, the SMOSREX (Surface Monitoring of the Soil Reservoir Experiment) site was developed to test the SMOS soil moisture retrieval algorithm. Two fields (bare soil and grassland) were monitored with Delta-T theta probes and a cosmic ray neutrons probe that measures the soil moisture over a large area (~ 700m). This site was stopped in 2012 which provides us with more than two years of data that can be compared to SMOS derived soil moisture values. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | PRODINRA: 351936 |
| الاتاحة: | https://hal.inrae.fr/hal-02744118 https://hal.inrae.fr/hal-02744118v1/document https://hal.inrae.fr/hal-02744118v1/file/Mialon-2014-Symposium%20Transactions_1.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.322312E2 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |