Soil Moisture Algorithm Validation with Ground Based Networks
Soil moisture products from satellite sensors have to be validated because the retrieval algorithms utilize formulations, parameters and ancillary data that have not been thoroughly developed and verified. In addition, due to the complexity in scaling points to large footprints it will always be impossible to translate first principle physics/effectromagnetics to these levels. Validation programs for the Advanced Microwave Scanning Radiometer (AMSR) instruments on the NASA EOS Aqua and the JAXA ADEOS-II platforms are currently ongoing. In order to address the validation issues noted, as part of the AMSR validation activity, several networks of insitu soil moisture sensors were established. There are now close to five years of observations available. The soil moisture algorithms used by NASA and JAXA for their respective standard products are being compared to the network observations, along with an alternative algorithm. Preliminary results indicate that the algorithms can perform within acceptable error bounds. The issues addressed here are common to both current and future satellite missions
T. J. Jackson M. H. Cosh R. Bindlish J. Du X. Zhan
U.S. Department of Agriculture, Agricultural Research Service, USA
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
507-510
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）