EOMF-11. A CCPP implementation to provide aerosol emissions for aerosol-aware precipitation physics in the NOAA UFS Weather Model

Aerosols play a significant role in the atmospheric precipitation physics of microphysics and convection. A physics suite, which includes the aerosol-aware double momentum Thompson microphysics scheme (Thompson MP), and the scale-aware and aerosol-aware Grell-Freitas (GF) convection scheme, was developed at NOAA Global System Laboratory (GSL). In the Thompson MP, the hygroscopic aerosol is referred as a “water friendly” aerosol (WFA), and the non-hygroscopic ice-nucleating aerosol is referred as “ice friendly” aerosol (IFA). For usual Thompson applications, WFA and IFA are derived using climatologies from NASA’s Goddard Chemistry Aerosol Radiation and Transport (GOCART) model, and the aerosol emission is represented by an empirical logarithm formula. The Common Community Physics Package (CCPP), which is designed to facilitate a host-model agnostic implementation of physics parameterizations, is a community development and is used by many model developers. All physics parameterizations in the NOAA Unified Forecast System (UFS) Weather Model must be CCPP-compliant. Here we embedded sea-salt, dust emission, and biomass burning and plumerise emission modules as well as anthropogenic aerosol emissions into the UFS using CCPP. These aerosol modules are called from within the physics package. The prognostic emission of sea-salt, sulfate, and organic carbon are combined to represent the WFA emission, while the prognostic emission of dust is used to represent IFA emission. Wet-scavenging is included in both, resolved and non-resolved precipitation physics. Dry deposition is parameterized. Subgrid scale transport is included in PBL and convection. The impacts with this more realistic aerosol emission on cloud-radiation, precipitation and large-scale circulation in C768 (~13km) global forecast will be evaluated in this study.