CRTM-Simulated Microwave Brightness Temperatures for 39 Ice Particle Habits Across Four Microphysics Schemes
Year: 2026
Type: dataset
Abstract: This 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.
Source: Data Commons
DOI: 10.26208/tx7a-tj14
Institution: Pennsylvania State University
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: green
OpenAlex ID: W7211944458