Changes to this version include: - The Catchment model now includes the PEATCLSM hydrology module for peatlands and uses an updated global map of peatland distribution. - Revised parameters are used in the L-band radiative transfer model that converts the simulated soil moisture and temperature estimates into Tb predictions for the radiance-based L4_SM analysis. Specifically, the L-band parameters for scattering albedo climatology, soil roughness climatology, and (seasonally-varying) vegetation opacity climatology are obtained from the SPL2SMP_E, Version 5, dual-channel retrieval product (April 2015 - March 2022). - The brightness temperature scaling parameters in the updated Level-4 soil moisture algorithm are based on seven years of SMAP observations and model simulations (April 2015 - March 2022). - For peatlands, the EnKF state vector now additionally includes the "catchment deficit" model prognostic variable. For the full major and minor version history, go to https://nsidc.org/data/smap/version-history