Selected monthly mean output of the extended seasonal prediction system based on MPI-ESM-HR 1.2.02 (GCFS2.2), ensemble members 1-30 (r1-r30), start months May and November, 1980-2023. GCFS2.2 is jointly developed by German weather service DWD, Climate Modelling @ Universität Hamburg, and MPI for Meteorology, contributing to Copernicus Climate Change Service (C3S). The standard output (sub-daily, daily, monthly) of GCFS2.2 can be found in Copernicus climate data store, e.g. https://doi.org/10.24381/cds.181d637e, please see also the description at https://confluence.ecmwf.int/display/CKB/C3S+Seasonal+Forecasts. High-frequency output can be found in DOKU at DKRZ under https://hdl.handle.net/21.14106/4e9ddccad5e9165aa3927b6cf96116eee3c3dbe7. Hindcasts seSEIKaSIVERAfYYYY, initialized May 1st each year from 1980-2023, and November 1st each year from 1980-2023, running for 24 months (2 years) each. The 30 members are initialized from the weakly coupled GCFS2.2 assimilation, which uses an oceanic ensemble Kalman filter to assimilate oceanic temperature and salinity profiles from EN4 and sea ice concentration from OSI-SAF (osi-450-a, osi-430-a), and atmospheric spectral nudging to ERA5 sea level pressure, and temperature, divergence, vorticity above 900 hPa. All simulations are run with CMIP6 external forcing. The EnKF has been implemented offline as a restart wrapper with the parallel data assimilation framework PDAF, developed and maintained by Lars Nerger, AWI. Simulations have been carried out in 2024 in collaboration with projects METAscales and ASPECT by Sebastian Brune, Daniel Krieger, Mohammad Basir Uddin. Output format is close to but not totally matching CMOR standard. Variable listing: from atmospheric component (384x192, gaussian): pr - total precipitation psl - sea level pressure sfcWind - 10m wind speed tas - near surface air temperature (2m air temperature) ts - surface air temperature ua10 - zonal wind speed at 10hPa ua250 - zonal wind speed at 250hPa ua850 - zonal wind speed at 850hPa va250 - meridional wind speed at 250hPa va850 - meridional wind speed at 850hPa from oceanic component (802x404, TP04): tos - sea surface temperature
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Brune, Sebastian; Krieger, Daniel; Uddin, Mohammad Basir; Pohlmann, Holger; Baehr, Johanna (2024). GCFS2.2 extended seasonal predictions 24 month, May and November starts 1980-2023, monthly mean 2D variables. DOKU at DKRZ. https://www.wdc-climate.de/ui/entry?acronym=DKRZ_LTA_1075_ds00039