WCRP Climate-system Historical Forecast Project (CHFP)
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Stratosphere-resolving Historical Forecast Project (Strat-HFP)
To quantify improvements in actual predictability by initialising and resolving the stratosphere in seasonal forecast systems
A set of parallel hindcasts are requested from stratosphere resolving and stratosphere non-resolving models. A stratosphere resolving model is defined here to have:
- A domain extending to 1hPa (~50km) or higher
The use of existing HFP data as the non-stratosphere resolving hindcasts is welcomed. Either coupled ocean-atmosphere model or two-tier forecasts are welcome.
Atmospheric initial conditions are at the choice of the participant but must not include any information from the future.
Land initial conditions are at the choice of the participant but must not include any information from the future.
- Option 1: use "reanalysis" land surface data modified to your model (recommended)
SST and sea-ice initial conditions - SST must not contain information from the future with respect to the forecast
- Option 1: persist the observed SSTA anomaly from the month preceding the forecast period (i.e., this anomaly is added to the climatological seasonal cycle of SST's)
Sea ice initial conditions: based on the associated sea ice data but containing no future information.