Daily averaged precipitation and vertical pressure velocity from aquaplanet and Earthlike configurations of CCSM4 and CESM1.2.2

These simulation data are taken from aquaplanet and "real-Earth" configurations of the NCAR Community Climate System Model version 4 (CCSM4) and Community Earth System Model version 1.2.2 (hereafter, “CESM1”). The Community Atmosphere Model (CAM) is the atmospheric component of the climate model. Each file contains only a single data field (plus supporting data) for a single simulation. Only two primary data fields are provided in this collection: daily averaged total precipitation (PRECT) and the 31-day running average of vertical pressure velocity at 500 hPa (OMEGA500). All data are on CAM’s nominal 1-deg or 2-deg finite volume grid. PRECT data are concatenated from native daily averaged CAM history files; PRECT data on the native 1-deg grid are also interpolated to the 2-deg grid using area-conservative remapping (“coarse2deg” file name identifier). For the OMEGA500 data (only provided on the 1-deg grid), a sliding 31-day unweighted running average filter is applied in time to the concatenated native history files. The collection contains output from both fixed-SST (~5 yr) and slab-ocean (10-yr) aquaplanet runs that have been allowed to equilibrate, as well as 10 yr each of data from standard (real-Earth) CCSM4 and CESM1 simulations following the AMIP-II protocol. The datasets are intended to be examined to assess precipitation statistics; full simulation details and analysis results can be found in Benedict et al. (2017, J. Adv. Model. Earth Syst.).