Merge pull request #296 from MeteoSwiss/nowcasting_update

Nowcasting update

Author: mchaamsler

docs/e-forecast-data/e1-short-term-forecast-data.md

@@ -6,19 +6,13 @@ title: Short-term forecast data ('nowcasting')
 
 # Short-term forecast data ('nowcasting')
 
-:::warning
-
-The following documentation is currently being prepared and may be subject to change.
-
-:::
-
 [Nowcasting](https://www.meteoswiss.admin.ch/weather/warning-and-forecasting-systems/nowcasting.html) involves high spatial and temporal resolution forecasts of weather developments for the next few minutes and up to a maximum of six hours ahead. The forecasts are updated every 5 or 10 minutes taking into account the latest available observations.
 
 The Meteoswiss nowcasting system is calculated every 5-10 minutes and consists of a continuous nowcasting integrating different information sources, covering Switzerland and the neighbouring regions. The horizontal resolution is 1km. The 6-hour interval includes the seamless combination of observed, extrapolated and predicted data from the deterministic run of the ICON-CH1-EPS numerical weather pediction model.
 
-The current deterministic implementation (INCA-CH) computes just one ensemble member. A new generation of nowcasting systems is in development. For this reason only a subset of the current INCA-CH parameters will become available trough our open data provision. In the next years additional parameters will be added.
+The current deterministic implementation (INCA-CH) only computes one ensemble member. A new generation of nowcasting systems is under development and is expected to be available by 2027. For this reason, only a subset of the current INCA-CH parameters will be made available through our open data provision, and a major migration change will have to be planned for 2027–2028, including a new set of output parameters, parameter names and parameter metadata. A parallel phase in which both the old and new systems are active will be ensured.
 
-The following parameters are currently under discussion to be made available:
+The following parameters are available:
 
 **Precipitation**
 - Total precipitation (`RP`, 5 min values every 5 min, radar based precipitation product)
@@ -33,6 +27,9 @@ The following parameters are currently under discussion to be made available:
 **Temperature**
 - Temperature 2 m (`TT`, 10 min values every 60 min)
 - Dew point temperature 2 m (`TD`, 10 min values every 60 min)
+- Snowfall line (`ZS`, 10 min values every 60 min)
+- Zero degree Isotherm (`Z0`, 10 min values every 60 min)
+- Soil surface temperature (`TG`, 10 min values every 60 min)
 
 ## Data download {#data-download}
 
@@ -48,6 +45,9 @@ The following **example data file**s are available for download:
 | **Wind direction (`DD_10min`)** | 10 min | 10 min | [DD_10min_INCA_202106280700.nc](https://zenodo.org/records/6470725/files/DD_10min_INCA_202204131500.nc)| `ogd-nowcasting_DD_10min_(date and time code).nc` | 60 |
 | **Temperature 2 m (`TT`)** | 10 min | 60 min | [TT_INCA_202106280700.nc](https://github.com/MeteoSwiss/publication-opendata-inca-data-nowcasting/blob/main/TT_INCA_202106280700.nc) | `ogd-nowcasting_TT_(date and time code).nc` | 13 |
 | **Dew point temperature 2 m (`TD`)** | 10 min | 60 min | [TD_INCA_202106280700.nc](https://github.com/MeteoSwiss/publication-opendata-inca-data-nowcasting/blob/main/TD_INCA_202106280700.nc) | `ogd-nowcasting_TD_(date and time code).nc` | 13 |
+| **Snowfall line (`ZS`)** | 10 min | 60 min | [ZS_INCA_202106280700.nc](https://zenodo.org/records/6470725/files/ZS_INCA_202106280700.nc?download=1) | `ogd-nowcasting_ZS_(date and time code).nc` | 13 |
+| **Zero degree Isotherm (`Z0`)** | 10 min | 60 min | [Z0_INCA_202106280700.nc](https://zenodo.org/records/6470725/files/Z0_INCA_202106280700.nc?download=1) | `ogd-nowcasting_Z0_(date and time code).nc` | 13 |
+| **Soil surface temperature (`TG`)** | 10 min | 60 min | [TG_INCA_202106280700.nc](https://zenodo.org/records/6470725/files/TG_INCA_202106280700.nc?download=1) | `ogd-nowcasting_TG_(date and time code).nc` | 13 |
 
 ## Data format {#data-format}