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Global mapping methods of snow water equivalent (SWE) are developed in this study using WCOM (Water Cycle Observation Mission) active/passive multichannel observations. Based on the payloads of WCOM mission, especially with X/Ku scatterometer and L/Ku/Ka radiometer active/passive observations, there are obvious advantages in snow water equivalent retrieval. The estimation of SWE mainly rely on the...
Frozen ground is soil or rock in which part or all of the pore water has turned into ice. Freeze/thaw state is simply water-ice phase change, but it is an important sign like a giant on-off “switch” of the land surface processes. The freezing of soil greatly reduces the water infiltration and migration in the soil, and in consequence generates a substantial increase in snowmelt runoff. The seasonal...
Water Cycle Observation Mission (WCOM) is an earth science mission proposed and focused on the research of water cycle under global change. With its three dedicated designed main payloads, WCOM can achieve synchronized observation on a group of global water cycle key parameters, including soil moisture, ocean salinity, snow water equivalent, soil freeze-thaw, atmospheric water vapor, precipitation...
Polarimetric Microwave Imager (PMI) is planning as one of the main payload on WCOM satellite with the purposes of collecting the radiation from the Earth surface to retrieve the geophysical parameters of the land, ocean and atmosphere. PMI is passive microwave radiometer with frequencies of 6.8, 10.7, 18.7, 23.8, 37 .0 and 89GHz. The radiometers at 10.7, 18.7 and 37.0 GHz are full-polarized to measure...
Global mapping methods of soil moisture are developed in this study using WCOM (Water Cycle Observation Mission) active/passive multichannel observations. Based on three payloads of WCOM mission with L-S bands passive observations and X/Ku active/passive observations, there are obvious advantages in soil moisture retrieval. Through evaluations of the Advanced Integral Equation Model (AIEM) simulating...
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