nextGEMS pre-final#
The nextGEMS pre-final simulations build on cycle 3 experience plus adaptations for multi-decadal experiments. This includes improvements in the configuration (updated schemes and features) and some changes in the output. The simulations will be analyzed during the 4th km-scale hackathon in Hamburg in March 2024.
As before, pre-final simulations can be accessed through the nextGEMS intake catalog:
import intake
cat = intake.open_catalog("https://data.nextgems-h2020.eu/catalog.yaml")
IFS-FESOM#
- IFS_9-FESOM_5-production
- 2020-2050output on 2 healpix levels, regular 0.25 deg, and native grid
cat.IFS.IFS_9-FESOM_5-production
ICON#
The ICON simulations use hierarchical HEALPix output. Please have a look at the introduction on Hierarchical HEALPix output for advice on data access.
TL;DR; Take ngc4008
for the run with the latest fixes and adjustments.
If you need a longer run, take ngc4006
(15 a) or ngc4008
(10 a, possibly extended;in progress)
For a quick look at results and output available, see
-
All simulations can be found in
cat.ICON
- ngc4005 [1]:
- ssp370 like scenario run from 2020⚠ intermittent changes in output configuration⚠ at model date 2024-04-01, sea-ice parameters were adjusted to yield more summer sea ice⚠ contains a bug in the land surface energy balance
- ngc4006 [2]
- continues ngc4005 until 2040, finalized output configuration. Same caveats apply
- ngc4007 [3]
- restart ssp370-like scenario run from 2020. Includes bug fix for land energy balance, and a modification of the cloud liquid inhomogeneity factor to account for boundary layer clouds. Starts with the 2020 initial conditions like ngc4005, but the hydrological discharge model was re-adjusted using data from model year 2030 of ngc4006
- ngc4008 [4]
- as ngc4007, but slightly retuned inhomogeneity factorSevere issues in the sea ice cover (esp. visible in late 2025).
- ngc3542
- somewhere between cycle3 and pre-finalincludes HAMOCC for ocean biogeochemistryOutput on the native grid