IASI Level 2 geophysical products monitoring reports

The IASI products provide important information on the atmosphere, surface and clouds, and can be used for many different applications, including weather forecasting as well as atmospheric composition, climate and environmental monitoring. Validating new products and performing continuous monitoring of the quality of operational products is critical to ensure user requirements are met.

The monitoring reports are used for internal monitoring purposes: to characterise and detect possible changes, or trends, in performance, and for reviewing their long-term stability. They are also for users who interested in the status/performance of IASI Level 2 products.

The IASI Level 2 products are produced by the operational ground segment (referred to as GS1 in the reports). The reference measurements are retrieved from various sources:

• Atmospheric temperature and humidity: in situ synoptic measurements processed in the NOAA Integrated Global Radiosonde Archive (IGRA).
• Total column water vapour: GNSS ground stations, operated by the European Meteorological Services Network (EUMETNET, E-GVAP: EUMETNET GNSS Water Vapour Programme)
• Total column ozone: European Brewer Network (EUBREWNET).
• Land Surface Temperature: SEVIRI LST product from the Land Surface Analysis SAF (LSA SAF).
• Cloud fraction and cloud top height: Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation — Cloud-Aerosol Lidar with Orthogonal Polarization (CALIPSO-CALIOP).
• Sea Surface Temperature: in situ buoys match-ups performed at Ocean and Sea Ice SAF (OSI SAF). See METIS Sea Surface Temperature.