This viewer allows you to display soil moisture data derived from Advanced Scatterometer (ASCAT) backscatter measurements. The three basic data types shown in the viewer are: 1) surface soil moisture data generated by EUMETSAT (most recent observations) and TU Wien (historic data) within the framework of the H-SAF project, 2) Soil Water Index (SWI) data generated by TU Wien within the framework of the Copernicus/GMES Global Land Service, and 3) Error estimates and model parameters for deriving the ASCAT soil moisture data.

This data viewer shows a long-term surface soil moisture data record as first produced in the WACMOS project and further developed within ESA's Climate Change Initiative (CCI). This Essential Climate Variable (ECV) record for soil moisture is based on active microwave soil moisture retrievals by TU Wien (ERS scatterometer, METOP ASCAT) and passive microwave soil moisture data sets (SMMR, SSM/I, TMI, AMSR-E, Windsat, etc.) produced by the VU Amsterdam. Soil moisture data sets derived from novel earth observation missions (SMOS, SMAP, AMSR-2) will be added step be step.

This data viewer shows monthly composites of 1 km surface soil moisture data derived from the ENVISAT Advanced Synthetic Aperture Radar (ASAR) Global Monitoring (GM) mode. This data set gives an impression of the capabilities of the upcoming Sentinel-1 satellites for soil moisture monitoring. The shown data was developed within ESA's SHARE project and covers southern and central Africa, parts of Argentina and entire Australia for the period January 2005 through May 2010.


In support of the preparations for the next generation of European imaging satellite missions - Sentinel-1 - the Vienna University of Technology has developed the Global Backscatter Model. Derived from more than 70.000 ENVISAT ASAR images, the model can be used to generate realistic radar images of the earth surface. The Google Earth layer shows one of the model parameters of the Global Backscatter Model, representing mean radar reflectivity.