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- W2000549303 abstract "Water and energy fluxes at the interface between the land surface and atmosphere are strongly depending on the surface soil moisture content which is highly variable in space and time. The sensitivity of active and passive microwave remote sensing data to surface soil moisture content has been investigated in numerous studies. Recent satellite borne mission concepts, as e.g. the SMOS mission, are dedicated to provide global soil moisture information with a temporal frequency of 1-3 days to capture the high temporal dynamics of surface soil moisture. Passive satellite microwave sensors have spatial resolutions in the order of tens of kilometres. The paper investigates the impact of land surface heterogeneity on soil moisture retrievals from L-band passive microwave data at different spatial scales between 1 km and 40 km. The impact of sensor noise and quality of ancillary information is explicitly considered. A synthetic study is conducted where brightness temperature observations are generated using simulated land surface conditions. The soil moisture retrieval uncertainties resulting from the heterogeneity within the image pixels as well as the uncertainties in the a priori knowledge of surface temperature data and due to sensor noise, is investigated." @default.
- W2000549303 created "2016-06-24" @default.
- W2000549303 creator A5039131287 @default.
- W2000549303 date "2007-01-01" @default.
- W2000549303 modified "2023-09-25" @default.
- W2000549303 title "Impact of surface heterogeneity on surface soil moisture retrievals from passive microwave data" @default.
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- W2000549303 doi "https://doi.org/10.1109/igarss.2007.4423288" @default.
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