Modeling synthetic aperture radar (SAR) scattering from a seasonally varying snow‐covered sea ice volume at 5.3 and 9.25 GHz

摘要: A series of sensitivity analyses using dielectric, mixture and microwave scattering models is presented. Data from the Seasonal Sea Ice Monitoring Modeling Site (SIMMS) in 1990 1991 are used to initialize models. The objective research investigate role various geophysical electrical properties specifying total relative cross section (???) snow covered first-year sea ice during spring period. seasonal transition period Winter SAR season Early Melt was shown signal a dielectric which caused volume become factor process. effect thermal insulation cover on be significant for both ?? ???. Higher atmospheric temperatures proportionally greater changes at base cover. Model ?0 computed range sensor, sensor-earth geometry, properties. In surface roughness terms (ohand L) were have impact when primary mechanism. Once began warm water available liquid phase, became masked because decrease penetration depths. During this variable dominated ?0, its ?v0, due control over mismatch created air/snow interface.