Benefits of the MTG Sounding Service

There will be a number of benefits delivered by the upcoming Meteosat Third Generation Sounding Service.

MTG-S Sounder instruments

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.

 

Infrared Spectrum

Key benefits of the IRS Service:

Figure 2
 
Figure 2: Illustration of simulated IRS brightness temperature for the full disk in a window channel
  • 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.

Solar Spectrum

 
Figure 3: Trace gas detection happens in limited domain over Europe with short time step

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.

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