The following 6 new parameters become operational with model cycle 46r1:
- Probability of temperature standardized anomaly greater than 1 standard deviation
- Probability of temperature standardized anomaly greater than 1.5 standard deviations
- Probability of temperature standardized anomaly greater than 2 standard deviations
- Probability of temperature standardized anomaly less than -1 standard deviation
- Probability of temperature standardized anomaly less than -1.5 standard deviations
- Probability of temperature standardized anomaly less than -2 standard deviations
These parameters refer to temperature anomalies at 850hPa. They are available from T+12h to T+360h at 12 hour steps. For the computation of anomalies and standard deviation, a climatology derived from ECMWF's re-forecasts is used consisting of the closest single re-forecast run (11 members, 20 years back) preceding the real-time forecast date. The same climatology replaced the outdated fixed climatology for the following existing parameters: