The Mellor–Yamada–Nakanishi–Niino (MYNN) (Nakanishi and Niino 2001, 2004, 2006, and 2009) scheme has been adpted and developed (Olson et al. 2019) for use in NOAA's operational forecast models (RAP, HRRR, and RRFS). It has been integrated into several modeling framworks, such as the Advanced Research version of the Weather Research and Forecasting Model (WRF-ARW) (Skamarock et al. 2019), Common Community Physics Package (CCPP) (Bernardet et al. 2024), and Model Prediction Across Scales (MPAS) (Skamarock et al. 2012). To centralize the development of the MYNN-EDMF for all applications, this scheme code has been universalized and made accessible in this stand-alone submodule repository, which is then connected to each of the modeling frameworks mentioned above. All future development of the MYNN-EDMF that is intended for NOAA’s operational use will be hosted in this public-facing submodule repository.

The most up-to-date documentation of the MYNN-EDMF is: https://repository.library.noaa.gov/view/noaa/19837 but an update tech note is in the works!

If you'd like to contribute, please reach out to the lead developer, Joseph Olson at [email protected].