| Title | Uncoupled ensemble subseasonal reforecasts (ENS-U) with IFS cycle 49r2 |
|---|---|
| Description | Uncoupled ensemble subseasonal reforecasts (ENS-U) with ocean and sea ice boundary conditions derived from observed values at initialisation time. In these experiments, SSTs are specified using daily values from the Operational Sea Surface Temperature and Ice Analysisthat are persisted as anomalies on top of a daily mean SST climatology (1979-2001) derived from the ERA40 reanalysis. Sea ice cover is specified using persistence of Ocean and Sea Ice Satellite Application Facility (OSI SAF) initial values for the first 15 days , linear blending between persistence and the ERA40 climatology for days 16-45, and climatology thereafter. This persistence-climatology approach represents a realistic operational alternative to a fully coupled ocean model, since observed SSTs beyond the initialisation date are not available in real-time forecast applications. Other than the specified ocean and sea ice boundary conditions, these reforecasts are configured identically to the coupled reference experiments available at https://apps.ecmwf.int/ifs-experiments/rd/impq/. |
| DOI | 10.21957/4z2b-e329 |
| Experiment ID | imq1 |
| Experiment class | ECMWF Research Department |
| Examples |
Retrieve all pressure level fields initialised on January 1st Retrieve all surface fields initialised on January 1st |
Uncoupled ensemble subseasonal reforecasts (ENS-U) with IFS cycle 49r2
To retrieve the data described in this experiment, you will need to use the ECMWF Web API with the example(s) given on this page. Please note that when accessing the data you are bound by the ECMWF terms of use.