Initial Conditions Products
| Product name | Description (established over forecast horizon) | Outputs | Forecasting horizon | Number of members | |
|---|---|---|---|---|---|
| Initial Conditions | Initial 3-day precipitation | Accumulated precipitation [mm] from meteorological forcing input over the 3-day period before the date of the forecast run. It includes the fillup day (usually one day only) with 1st 24 hours of the ENS-control as forcing, and 2 days (or less, if the fillup period with ENS-control is longer than just the 1 day previous the forecast run) of ERA5T forcing.
| Map | NA | NA |
Initial 3-day snow melt | Accumulated snow melt [mm] from meteorological forcing input over the 3-day period before the date of the forecast run. It includes the fillup day (usually one day only) with 1st 24 hours of the ENS-control as forcing, and 2 days (or less, if the fillup period with ENS-control is longer than just 1 day previous the forecast run) of ERA5T forcing.
| Map | NA | NA | |
Initial snow cover | Daily mean snow cover [mm of water equivalent] from meteorological forcing input (namely the first 24 hours of the ENS-control) for the 24-hour period (00-00 UTC) before the date of the forecast run. Areas where the snow cover is 10 m or above are considered as glaciers.
| Map | NA | NA | |
| Initial soil moisture | Soil moisture [%] from meteorological forcing input at initial time (00 UTC) on the day of the forecast run. The soil moisture is expressed as a ratio between the soil water content in the top layer (currently with 7 cm depth) compared with the maximum water content that this soil layer can hold.
| Map | NA | NA | |
| Initial 2m temperature | Daily mean 2m temperature [C] from meteorological forcing input (namely the first 24 hours of the ENS-control) for the 24-hour period (00-00 UTC) before the date of the forecast run.
| Map | NA | NA | |
| Initial 3-day precipitation anomaly | Anomaly [unitless] of the accumulated precipitation from meteorological forcing input over the 3-day period before the date of the forecast run. It includes the fillup day (usually one day only) with 1st 24 hours of the ENS-control as forcing, and 2 days (or less, if the fillup period with ENS-control is longer than just the 1 day previous the forecast run) of ERA5T forcing. The deviation from the ERA5 climate mean is normalised by the standard deviation (both based on the 1979-2018 period). The resolution of the anomaly layer is lower than the original 3-day precipitation layer, as the ERA5 climatology is available on coarser ~31 km horizontal resolution only, and therefore the information content will be lower in the anomalies.
| Map | NA | NA | |
| Initial 3-day snow melt anomaly | Anomaly [unitless] of the accumulated snow melt from meteorological forcing input over the 3-day period before the date of the forecast run. It includes the fillup day (usually one day only) with 1st 24 hours of the ENS-control as forcing, and 2 days (or less, if the fillup period with ENS-control is longer than just the 1 day previous the forecast run) of ERA5T forcing. The deviation from the ERA5 climate mean is normalised by the standard deviation (both based on the 1979-2018 period). The resolution of the anomaly layer is lower than the original 3-day precipitation layer, as the ERA5 climatology is available on coarser ~31 km horizontal resolution only, and therefore the information content will be lower in the anomalies.
| Map | NA | NA | |
| Initial snow cover anomaly | Daily mean snow cover anomaly [unitless] from meteorological forcing input for the 24-hour period (00-00 UTC) before the date of the forecast run. The deviation from the ERA5 climate mean is normalised by the standard deviation (both based on the 1979-2018 period). The resolution of the anomaly layer is lower than the original 3-day precipitation layer, as the ERA5 climatology is available on coarser ~31 km horizontal resolution only, and therefore the information content will be lower in the anomalies.
| Map | NA | NA | |
| Initial soil moisture anomaly | Soil moisture anomaly [unitless] from meteorological forcing input at initial time (00 UTC) on the day of the forecast run. The soil moisture is expressed as a ratio between the soil water content in the top layer (currently with 7 cm depth) compared with the maximum water content that this soil layer can hold. The deviation from the ERA5 climate mean is normalised by the standard deviation (both based on the 1979-2018 period). The resolution of the anomaly layer is lower than the original 3-day precipitation layer, as the ERA5 climatology is available on coarser ~31 km horizontal resolution only, and therefore the information content will be lower in the anomalies.
| Map | NA | NA | |
| Initial 2m temperature anomaly | Daily mean 2m temperature anomaly [unitless] from meteorological forcing input (namely the first 24 hours of the ENS-control) for the 24-hour period (00-00 UTC) before the date of the forecast run. The deviation from the ERA5 climate mean is normalised by the standard deviation (both based on the 1979-2018 period). The resolution of the anomaly layer is lower than the original 3-day precipitation layer, as the ERA5 climatology is available on coarser ~31 km horizontal resolution only, and therefore the information content will be lower in the anomalies.
| Map | NA | NA |
