The European-funded ENSEMBLES project defined two experimental protocols.
The first (stream 1), is essentially a set of test integrations, covering the 11 years 1991-2001 and with May and November start dates only.
The second, stream 2, is essentially equivalent to the CHFP protocol.
ENSEMBLE project outputs data currently hosted on http://ensemble.cima.fcen.uba.ar:9090/thredds/catalog.html
The seasonal-to-decadal (s2d) experiments comprise two sets of simulations: the so-called Stream 1 and Stream 2 simulations.
For both streams, coordinated forecast experiments over seasonal, interannual and decadal timescales have been performed.
Three different approaches are being pursued to represent model uncertainties: the multi-model approach, the perturbed physical parameter approach and the stochastic physics approach.
Description of the s2d experiments
Stream 1:
Seasonal and annual ensemble integrations
- 2 start dates per year: 1st of May and November
- 7 month hindcasts for May and 14 for November
- Hindcast production 1991-2001
- 9-member ensembles
Multi-annual ensemble integrations
- Two hindcasts started on the first of November 1965 and 1994
Stream 2:
Seasonal and annual ensemble integrations
- 4 start dates per year: 1st of February, May, August and November
- 7 month hindcasts for every start date, except 14 for those starting in November
- Hindcast production 1960-2005, using ERA-40 up to August 2002 inclusive and ECMWF operational analyses afterwards
- 9-member ensembles
Multi-annual ensemble integrations(minimum set)
- One hindcast every 5 years
- 10 year runs starting on 1st of November 1960, with the next one starting in November 1965 and so on
- Hindcast production 1960-2005
- 3-member ensembles
Further information about ENSEMBLE Experimental Set Up available:
here