Community Development of the Snow Microwave Radiative Transfer Model for Passive, Active and Altimetry Observations of the Cryosphere

The Snow Microwave Radiative Transfer (SMRT) model was initially developed to explore the sensitivity of microwave scattering to snow microstructure for active and passive remote sensing applications. Here, we discuss the modular design of SMRT that has enabled its rapid extension by the community....

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Bibliographic Details
Published in:2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS
Main Authors: Sandells, M., Picard, G., Lowe, H., Maass, N., Winstrup, M., Brucker, L., Leduc-Leballeur, M., Larue, F., Aublanc, J., Thibaut, P., Murfitt, J.
Format: Article in Journal/Newspaper
Language:English
Published: IEEE 2021
Subjects:
MRT
Ice
Online Access:https://orbit.dtu.dk/en/publications/ec99f03e-5e57-429a-936d-4101e8f1a7a7
https://doi.org/10.1109/IGARSS47720.2021.9553580
https://backend.orbit.dtu.dk/ws/files/290947667/IGARSS2021.pdf
Description
Summary:The Snow Microwave Radiative Transfer (SMRT) model was initially developed to explore the sensitivity of microwave scattering to snow microstructure for active and passive remote sensing applications. Here, we discuss the modular design of SMRT that has enabled its rapid extension by the community. SMRT can now represent a layered medium consisting of snow, land ice, lake ice and/or sea ice overlying a substrate of soil, water or parameterized by reflectivity. A time-dependent radiative transfer solution method has also been added to allow for low resolution mode altimetry applications. We illustrate the use of SMRT to simulate brightness temperature for snow on lake ice, backscatter for snow on soil and altimeter waveforms for snow on sea ice.