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TitleCRTM-Simulated Microwave Brightness Temperatures for 39 Ice Particle Habits Across Four Microphysics Schemes.
Date2026
AbstractThis dataset contains simulated Microwave (MW) brightness temperatures (TBs) and Global Precipitation Measurement (GPM) MW Imager (GMI) TBs for Hurricane DORIAN to evaluate how the attachment of ice particles of various shapes affects biases in simulated TBs for a bulk Microphysics Scheme (MPS). For MW simulations, the community Radiative Transfer Model (CRTM) was used to compute MW radiances from microphysical outputs simulated using the Numerical Weather Prediction (NWP) model employing four MPSs: WSM6, Thompson, Morrison, and NSSL. For each MPS, the data contain simulated TBs for all the GMI channels. A total of 39 simulations were run for each GMI channel, using ice particles of various shapes from the three MW databases: Liu 2008, ARTS (Eriksson et al., 2018), and Ren et al., 2023. We included bulk optical properties of 39 ice particles in the CRTM Look-Up tables (LUTs). The simulations were run on the Stampede 3 supercomputer (TACC) using 58-hour NWP outputs from all the MPSs. CRTM replicated the GMI observation geometry, computing TBs at the same locations as the GMI observation for more direct comparisons between simulations and observations. Overall, the purpose of this dataset was to study the biases stemming from ice particle attachment in the MPSs and reduce the uncertainties in the CRTM forward operator for MW data assimilations. Data are organized as four NetCDF4 files (one per microphysics scheme), each containing per-channel groups with observed and simulated TBs for each of the 39 particle cases.
MetadataClick here for full metadata
Data DOIdoi:10.26208/tx7a-tj14

Researchers
Das, A.
Penn State Department of Meteorology
Yao, Z.
Penn State
Zhang, Y.
Bionano Genomics
Clothiaux, E. E.
Penn State Department of Meteorology
Chen, X.
Penn State Department of Meteorology
Didlake Jr., A. C.
Penn State Department of Meteorology

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References
Eriksson, P., Ekelund, R., Mendrok, J., Brath, M., Lemke, O., & Buehler, S. A. (2018). A general database of hydrometeor single scattering properties at microwave and sub-millimetre wavelengths. Earth System Science Data, 10(3), 1301-1326. https://doi.org/10.5194/essd-10-1301-2018
Liu, G. (2008). A database of microwave single-scattering properties for nonspherical ice particles. Bulletin of the American Meteorological Society, 89(10), 1563-1570. https://doi.org/10.1175/2008BAMS2486.1
Ren, T., Yang, P., Garrett, K., Ma, Y., Ding, J., & Coy, J. (2023). A microphysics-scheme-consistent snow optical parameterization for the community radiative transfer model. Monthly Weather Review, 151(2), 383-402. https://doi.org/10.1175/MWR-D-22-0145.1