Location: Hydrology and Remote Sensing Laboratory
2012 Annual Report
ARS will direct the research aspects of the project, leading the investigation and analysis of the results for incorporation into the SMAP Science Team Data Archive. Provide equipment and installation of in situ soil moisture sensors and assist in the collection of physical samples for calibration and validation of the sensors installed in the testbed.
OSU will be providing local logistical support for the project including field site maintenance and communications support for the instrumentation. Also administer a gravimetric and vegetation sampling regimen on a regular basis for calibration and validation of the sensor estimates with the support personnel funded by this agreement.
Data from four base stations can be downloaded via cellular technology, but OSU is maintaining and downloading data from several other satellite stations which have larger data production rates and cannot be easily transferred via cellular networks. Many of the sensors required a settling time before the data could be considered accurate. A rigorous sensor calibration experiment will be conducted in the summer of 2012 to reduce errors in soil moisture estimation for each of the in situ sensors.
A portion of the field was burned in the winter of 2012 as part of another research project, which will provide a vegetation free reference for the study region. A flux system was installed to monitor evapotranspiration at the site. An additional Distributed Temperature Sensing System was installed at the site in May of 2012. Also in May, a Spring Workshop was held to determine the status of the testbed and discuss future plans. The NASA Airborne Microwave Observatory of Subcanopy and Subsurface project (AirMOSS) project will be using the site as a validation testbed in the summer of 2012 and 2013.