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Remote sensing of soil moisture (co-organized)
Convener: Alexander Loew (deceased) | Co-Conveners: Niko Verhoest , Yann Kerr , Wolfgang Wagner , Patricia de Rosnay 
 / Fri, 22 Apr, 08:30–10:00
 / Attendance Fri, 22 Apr, 17:30–19:00

We invite presentations concerning soil moisture estimation, including remote sensing, field experiments, land surface modelling and data assimilation. The technique of microwave remote sensing has made much progress toward its high potential to retrieve surface soil moisture at different scales. From local to landscape scales several field or aircraft experiments (e.g. SMAPex) have been organised to improve our understanding of active and passive microwave soil moisture sensing, including the effects of soil roughness, vegetation, spatial heterogeneities, and topography. At continental scales a series of several passive and active microwave space sensors, including SMMR (1978-1987), AMSR(2002-), ERS/SCAT (1992-2000) provided information on surface soil moisture. Current investigations in L-band passive microwave with SMOS (2009-) and the new SMAP mission (Q1 2015) and in active microwave with Metop/Ascat series (2006-) open new possibilities in the quantification of the soil moisture at regional and global scales. Comparison between soil moisture simulated by land surface models, in situ observations, and remotely sensed soil moisture is also relevant to characterisation of regional and continental scale soil moisture dynamic (e.g., ALMIP2, GSWP3).

We encourage presentations related to soil moisture remote sensing, including:
- Field experiment, theoretical advances in microwave modelling and calibration/validation activities.
- Root zone soil moisture retrieval and soil moisture assimilation in land surface models as well as in Numerical Weather Prediction models.
- Inter-comparison and inter-validation between land surface models, remote sensing approaches and in-situ validation networks.
- Evaluation and trend analysis of soil moisture data record products such as the soil moisture CCI product or soil moisture re-analysis products (e.g. MERRA-Land, ERA-Land).

Special issue in WATER journal
This year, the session contributors are highly invited to submit a paper to a special issue on "Remote Sensing of Soil Moisture" in the WATER journal. We highly encourage full research papers submissions to this special issue.
Details about the special issue can be found here: