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MATLAB codes: Evaluation of Wet Snow Dielectric Mixing Models for LWA estimation in Greenland Percolation Zone
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Overview
Determining the effective permittivity of snow and firn is essential for the accurate estimation of liquid water amount (LWA). Here, we compare ten commonly used microwave dielectric mixing models for estimating LWA in snow and firn using L-band radiometry. We specifically focus on the percolation zone of the Greenland Ice Sheet (GrIS), where the average volume fraction of liquid water is approximately 6 percent. We used L-band brightness temperature (TB) observations from the NASA Soil Moisture Active Passive (SMAP) mission in an inversion-based framework to estimate LWA, applying different dielectric mixing formulations in forward simulation.