J. Dudhia, MMM/NCAR

Since WRF Version 4.3 in May 2021, there have been minor releases 4.3.1, 4.3.2 and 4.3.3, and a new major release in April 2022. The talk will outline the major updates in the last year and show some verification test results.

New features include
(a) The NoahMP LSM is now maintained in a separate repository that is accessed at compile time when using V4.4 or later versions. This is to enable future sharing of the code with operational versions at NOAA.
(b) A shallow water roughness length parameterization by Jimenez and Dudhia (2018, JAMC) has been added to account for the extra roughness in shallow water. This can be used with bathymetry data also available via WPS or with a fixed depth set in the namelist.
(c) WRF-Solar is extended to include stochastic ensemble prediction by modifying the inputs to select physics schemes with random-pattern perturbations that are customizable via the namelist.
(d) Greenhouse gas concentrations now use a new default setting which was the previously available time-varying table input file option. This is applied in the RRTMG, RRTM and CAM radiation options.
(e) There is a new option to output accumulated physics tendencies for budget studies.
(f) For those with CMAQ air quality code, WRF now enables use of CMAQ aerosol information in its radiative forcing when using two-way coupling.

Other changes and bug-fixes will also be described.