UK Met Office GloSea6 seasonal forecast maps
UK Met Office GloSea6 seasonal forecast maps from Copernicus C3S. Compare GloSea6 with ECMWF SEAS5, Météo-France, DWD and CMCC, or compare monthly runs side by side.
GloSea6 is the Met Office Global Seasonal forecasting system, built on the HadGEM3 coupled climate model. Unlike centres that start a large ensemble on one day, GloSea runs a few members every day and assembles a lagged ensemble from the most recent start dates. That is why the member count you see on a GloSea forecast can differ from other centres.
C3S identifies the current configuration as system 610. Following C3S guidance on qualifying members, this site uses the 50 latest forecast members for each nominal initialization month when deriving probabilities, with the matching hindcast members for the reference period.
At a glance
| Centre | Met Office, United Kingdom |
|---|---|
| System | GloSea6 (C3S system 610) |
| Forecast members used | 50 latest qualifying members |
| Hindcast members | C3S qualifying hindcast members |
| Reference period | 1993–2016 hindcast climatology |
| Grid | 1° global, ±85° latitude shown |
| Lead times | Six monthly leads; four three-month windows |
| Fields | 2 m temperature, precipitation, mean sea-level pressure, sea-surface temperature |
| Forecast types | Ensemble mean anomaly, tercile summary, median exceedance, tercile and quintile probabilities |
| Source | Copernicus C3S seasonal forecast catalogue |
New initializations are imported monthly. The system version is taken from the live Copernicus catalogue for each run, so the version shown on a map panel always matches the data behind it.
Open UK Met Office in the workspace
- Compare the two latest UK Met Office runs
- UK Met Office tercile summary
- UK Met Office precipitation anomaly
- UK Met Office vs ECMWF SEAS5
- UK Met Office vs Météo-France Météo-France seasonal system
- UK Met Office vs DWD GCFS 2.2
- UK Met Office vs CMCC SPS4