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Evaluation of ERS scatterometer soil moisture products over a half‐degree region in southwestern France
Author(s) -
Pellarin Thierry,
Calvet JeanChristophe,
Wagner Wolfgang
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl027231
Subject(s) - scatterometer , water content , environmental science , moisture , soil science , scale (ratio) , remote sensing , geology , meteorology , wind speed , geography , geotechnical engineering , cartography
This paper investigates the ERS Scatterometer soil moisture products precision over a half‐degree region in Southwestern France. Based on a high resolution soil moisture simulation (1 km 2 ) validated at the local scale, the ERS‐scat product is assessed at its own resolution (about 50 × 50 km 2 ). The study points out the suitable quality of the surface soil moisture product (root mean square error equal to 0.06 m 3 .m −3 for a 4‐year period) and assesses the retrieved root‐zone soil moisture accuracy provided by a semi‐empirical methodology exclusively based on surface soil moisture products.