There will be a number of benefits delivered by the upcoming Meteosat Third Generation Sounding Service.
The new geostationary sounder service is based upon requests from the Numerical Weather Prediction (NWP) community to frequently deliver spectral information and/or retrieved products as horizontal and vertical gradients of humidity and temperature. These will also support Nowcasting applications — giving improved warnings on location and intensity of convective storms, updated on a short temporal scale.
Key benefits of the IRS Service:
- 30-min repeat cycle over Europe filling large spatial and temporal voids in the 12-hour standard radiosonde observations.
- Providing time and space interpolation of moisture/temperature observations taken from the polar orbiting satellites.
- Better depiction of the hydrological cycle in models through information on tropospheric moisture structures and their variation in time.
- Three-dimensional (3D) information on humidity, temperature, and wind will support Nowcasting applications — giving improved warnings on location and intensity of convective storms.
- Information on vertically resolved atmospheric motion vectors with improved height assignment is beneficial for the tropical areas.
- Provision of information to identify pre-convective situations supporting NWC applications to forecast convective initiation.
- Forecasting pollution and monitoring of atmospheric minor constituents will be helped by estimates of diurnal variations of tropospheric contributions of atmospheric trace gases as O3 and CO.
- Improved volcanic ash prediction through information on the composition and density of the ash cloud.
The Sentinel 4 mission (supported by UVN instrument) is one component of the joint Copernicus Sentinel-4 and Sentinel-5 (UVNS instrument) concept for climate protocol monitoring (lower troposphere) and air quality applications.
The primary objective of the Sentinel-4 mission is to support air quality monitoring, and forecast over Europe with a high revisit time (~1 hour or better).
The primary data products, derived from the UV-VIS-NIR Sounder (UVNS) instrument readings, will be ozone, nitrogen dioxide, sulphur dioxide, formaldehyde and aerosol optical depth.