| HAL : hal-00569113, version 1 |
| DOI : 10.5194/hess-14-2443-2010 |
| Code IRD Horizon : PAR00003120 |
| Fiche détaillée | Récupérer au format |
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| Hydrology and Earth System Sciences Discussions 14, 12 (2010) 2443-2453 |
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| Interannual variations of the terrestrial water storage in the Lower Ob' Basin from a multisatellite approach |
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| Frédéric Frappart 1Fabrice Papa 2 |
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| (06/12/2010) |
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| Temporal variations of surface water volume over inundated areas of the Lower Ob' Basin in Siberia, one of the largest contributor of freshwater to the Arctic Ocean, are estimated using combined observations from a multisatellite inundation dataset and water levels over rivers and floodplains derived from the TOPEX/POSEIDON (T/P) radar altimetry. We computed time-series of monthly maps of surface water volume over the common period of available T/P and multisatellite data (1993–2004). The results exhibit interannual variabilities similar to precipitation estimates and river discharge observations. This study also presents monthly estimates of groundwater and permafrost mass anomalies during 2003–2004 based on a synergistic analysis of multisatellite observations and hydrological models. Water stored in the soil is isolated from the total water storage measured by GRACE when removing the contributions of both the surface reservoir, derived from satellite imagery and radar altimetry, and the snow estimated by inversion of GRACE measurements. The time variations of groundwater and permafrost are then obtained when removing the water content of the root zone reservoir simulated by hydrological models. |
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| 1 : | Laboratoire des Mécanismes et Transfert en Géologie (LMTG) |
| CNRS : UMR5563 – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III – Institut de recherche pour le développement [IRD] : UMR154 | |
| 2 : | NOAA Cooperative Remote Sensing Science and Technology Center |
| NOAA | |
| 3 : | GeoForschungsZentrum (GFZ) |
| GeoForschungsZentrum | |
| 4 : | Dynamique terrestre et planétaire (DTP) |
| CNRS : UMR5562 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III | |
| 5 : | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA) |
| CNRS : UMR8112 – INSU – Observatoire de Paris – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Cergy Pontoise – Ecole normale supérieure de Paris - ENS Paris | |
| 6 : | NOAA Cooperative Remote Sensing Science and Technology Center |
| NOAA | |
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| Domaine | : | Planète et Univers/Sciences de la Terre |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00569113, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00569113 | |
| oai:hal.archives-ouvertes.fr:hal-00569113 | |
| Contributeur : Frédéric Frappart | |
| Soumis le : Jeudi 24 Février 2011, 11:59:32 | |
| Dernière modification le : Jeudi 24 Février 2011, 14:48:20 | |