Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data
The potentialities of ENVISAT ASAR (Advanced Synthetic Aperture Radar) multi-angle data for mapping surface soil moisture (SSM) in Sahelian rangelands are investigated at medium scale (30 000 km<sup>2</sup>). The Wide Swath data are selected to take advantage of their hig...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2011-02-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/15/603/2011/hess-15-603-2011.pdf |
| _version_ | 1811312740784930816 |
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| author | F. Baup E. Mougin P. de Rosnay P. Hiernaux F. Frappart P. L. Frison M. Zribi J. Viarre |
| author_facet | F. Baup E. Mougin P. de Rosnay P. Hiernaux F. Frappart P. L. Frison M. Zribi J. Viarre |
| author_sort | F. Baup |
| collection | DOAJ |
| description | The potentialities of ENVISAT ASAR (Advanced Synthetic Aperture Radar) multi-angle data for mapping surface soil moisture (SSM) in Sahelian rangelands are investigated at medium scale (30 000 km<sup>2</sup>). The Wide Swath data are selected to take advantage of their high temporal repetitivity (about 8 days at the considered scale) associated to a moderate spatial resolution (150 m). In the continuity of previous studies conducted at a local scale in the same region, SSM maps are here processed over the whole AMMA Gourma mesoscale site at 1 km resolution scale. Overall, the generated maps are found to be in good agreement with field data, EPSAT-SG (Estimation des Pluies par SATellite – Second Generation) rainfall estimates and ERS (European Remote Sensing) Wind Scatterometer (WSC) SSM products. The present study shows that the spatial pattern of SSM can be realistically estimated at a kilometric scale. The resulting SSM maps are expected to provide valuable information for initialisation of land surface models and the estimation of the spatial distribution of radiative fluxes. Particularly, SSM maps could help to desaggregate low-resolution products such as those derived from WSC data. |
| first_indexed | 2024-04-13T10:41:55Z |
| format | Article |
| id | doaj.art-dfaf3992d537491dbf07ca1877ca0d25 |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-04-13T10:41:55Z |
| publishDate | 2011-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-dfaf3992d537491dbf07ca1877ca0d252022-12-22T02:49:54ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382011-02-0115260361610.5194/hess-15-603-2011Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR dataF. BaupE. MouginP. de RosnayP. HiernauxF. FrappartP. L. FrisonM. ZribiJ. ViarreThe potentialities of ENVISAT ASAR (Advanced Synthetic Aperture Radar) multi-angle data for mapping surface soil moisture (SSM) in Sahelian rangelands are investigated at medium scale (30 000 km<sup>2</sup>). The Wide Swath data are selected to take advantage of their high temporal repetitivity (about 8 days at the considered scale) associated to a moderate spatial resolution (150 m). In the continuity of previous studies conducted at a local scale in the same region, SSM maps are here processed over the whole AMMA Gourma mesoscale site at 1 km resolution scale. Overall, the generated maps are found to be in good agreement with field data, EPSAT-SG (Estimation des Pluies par SATellite – Second Generation) rainfall estimates and ERS (European Remote Sensing) Wind Scatterometer (WSC) SSM products. The present study shows that the spatial pattern of SSM can be realistically estimated at a kilometric scale. The resulting SSM maps are expected to provide valuable information for initialisation of land surface models and the estimation of the spatial distribution of radiative fluxes. Particularly, SSM maps could help to desaggregate low-resolution products such as those derived from WSC data.http://www.hydrol-earth-syst-sci.net/15/603/2011/hess-15-603-2011.pdf |
| spellingShingle | F. Baup E. Mougin P. de Rosnay P. Hiernaux F. Frappart P. L. Frison M. Zribi J. Viarre Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data Hydrology and Earth System Sciences |
| title | Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data |
| title_full | Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data |
| title_fullStr | Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data |
| title_full_unstemmed | Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data |
| title_short | Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data |
| title_sort | mapping surface soil moisture over the gourma mesoscale site mali by using envisat asar data |
| url | http://www.hydrol-earth-syst-sci.net/15/603/2011/hess-15-603-2011.pdf |
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