TY - GEN
T1 - Development of soil moisture retrieval algorithms for the hydros microwave radiometer
AU - O'Neill, Peggy
AU - Shi, J. C.
AU - Njoku, Eni
AU - Wood, Eric F.
PY - 2005
Y1 - 2005
N2 - The objective of the Hydros Earth System Science Pathfinder mission is to collect global scale measurements of the Earth's soil moisture and land surface freeze/thaw conditions, using a combined L band radiometer and radar system operating at 1.41 and 1.26 GHz, respectively. Brightness temperature data from the Hydros radiometer will have a nominal resolution of ∼40 km and an incidence angle of ∼40 degrees. Along with the inclusion of needed static and dynamic ancillary data, the Hydros calibrated TB will be used to generate an Earth-gridded derived soil moisture product. Members of the Hydros team are currently in the process of evaluating possible candidate soil moisture retrieval algorithms in order to select a baseline algorithm by mid-2006, although the algorithm test and evaluation process will likely continue through the Hydros launch in 2010. The accuracy of the various ancillary data parameters, as well as their temporal and spatial resolution, time lag, and ease of availability, will be an important factor in driving the overall error budget for the Hydros soil moisture products.
AB - The objective of the Hydros Earth System Science Pathfinder mission is to collect global scale measurements of the Earth's soil moisture and land surface freeze/thaw conditions, using a combined L band radiometer and radar system operating at 1.41 and 1.26 GHz, respectively. Brightness temperature data from the Hydros radiometer will have a nominal resolution of ∼40 km and an incidence angle of ∼40 degrees. Along with the inclusion of needed static and dynamic ancillary data, the Hydros calibrated TB will be used to generate an Earth-gridded derived soil moisture product. Members of the Hydros team are currently in the process of evaluating possible candidate soil moisture retrieval algorithms in order to select a baseline algorithm by mid-2006, although the algorithm test and evaluation process will likely continue through the Hydros launch in 2010. The accuracy of the various ancillary data parameters, as well as their temporal and spatial resolution, time lag, and ease of availability, will be an important factor in driving the overall error budget for the Hydros soil moisture products.
KW - ATBD
KW - Hydros
KW - Microwave radiometry
KW - Retrieval algorithms
KW - Soil moisture
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U2 - 10.1109/IGARSS.2005.1525635
DO - 10.1109/IGARSS.2005.1525635
M3 - Conference contribution
AN - SCOPUS:33745698812
SN - 0780390504
SN - 9780780390508
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 2744
EP - 2747
BT - 25th Anniversary IGARSS 2005
T2 - 2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005
Y2 - 25 July 2005 through 29 July 2005
ER -