[ Derived from parent entry - See data hierarchy tab ] 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-open. Datasets may be added to this Dataset Group with additional starts after 2023, subject to availability of resources.
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.
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 for start years 1980-2023 have been carried out in 2024 in collaboration with projects METAscales and ASPECT by Sebastian Brune, Daniel Krieger, Mohammad Basir Uddin. Start dates beginning with 2024 may be updated.
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
High-frequency output for start years 1980-2023 can be found in DOKU at DKRZ under https://hdl.handle.net/21.14106/4e9ddccad5e9165aa3927b6cf96116eee3c3dbe7.