Page Banner

United States Department of Agriculture

Agricultural Research Service

Soil Moisture Active Passive Experiment (SMAPEx)
headline bar


         Field campaigns with airborne and ground data to contribute to the development of radar-only and combined radar-radiometer soil moisture retrieval algorithms for SMAP.

         Utilizes existing in situ resources and enhancements in the Murrumbidgee catchment (NSW) designed to support the unique products of SMAP.

         Introduction of a new low-cost active and passive L-band airborne facility

         Calibration and scaling of an Australian cal/val site for post-launch validation of SMAP products over Australia

         Led by Jeff Walker (University of Monash) and Rocco Panciera (University of Melbourne)


Experiment Design


         Timing: 4, 1-week long campaigns across one seasonal cycle

         Study area: Semi-arid, irrigated & dryland cropping, dryland grazing

         Airborne: L-band radiometer & radar, VIS/IR/NIR/SWIR and Thermal IR

         Ground: soil moisture, vegetation biomass/VWC/LAI/VIS&NIR, surface roughness, soil temperature

         Monitoring Network: 29 semi-permanent soil moisture stations (on SMAP 36km/9km/3km nested grids)




         Campaign 1:     July 5-July 9, 2010

         Campaign 2:     Dec. 4-Dec. 8, 2010

         Campaign 3:     TBD, 2011

         Campaign 4:     TBD, 2011

Last Modified: 6/25/2010
Footer Content Back to Top of Page