| Summary: | This release of MPAS introduces several updates and new capabilities for MPAS-Atmosphere, most notably: The MYNN Surface Layer and Planetary Boundary Layer (PBL) schemes have been updated. The PBL scheme includes the options needed to run the Eddy Diffusivity Mass Flux (EDMF) scheme. A separate driver for the parameterization of surface processes over sea-ice points has been added. The build system now tests for the availability of the modern <code>mpi_f08</code> module in the MPI library. If detected, the <code>mpi_f08</code> module interface to Fortran MPI routines will be used in favor of the older <code>mpi</code> module interface. The atmosphere core now supports the storage and retrieval of time-invariant fields in a separate I/O stream, offering significant disk space savings, especially in cases where large ensembles or cycled simulations are being run. See Section 8.3 of the User's Guide for more details. The top-level Makefile provides a new <code>intel</code> build target for the Intel oneAPI Fortran, C, and C++ compiler suite. To support real-data simulations on meshes with grid distances approaching 1 km or less, the init_atmosphere core provides an option, <code>config_30s_supersample_factor</code>, for super-sampling of the 30 arc-second terrestrial fields (terrain, land use, soil category, and MODIS FPAR monthly vegetation fraction). When compiling, <code>PRECISION=single</code> is now the default, and double-precision builds must be specified with <code>PRECISION=double</code>.
|
|---|