Global Space-based Inter-calibration-system develops common methodologies and implements operational procedures to ensure quality and comparability of satellite measurements taken at different times and locations, by different instruments, operated by various satellite agencies. This entails the following items:

  • instruments meet specifications,
  • pre-launch tests are traceable to SI standards,
  • on-orbit instrument performance is carefully analysed,
  • instruments are inter-calibrated against reference instruments,
  • and measurements are validated with reference sites.

GSICS current priorities are:

  • to perform and deliver operational production of GSICS corrections, initially for infrared channels and thereafter for visible and microwave sensors;
  • to consolidate the GSICS methodological basis and data management infrastructure, including collaborative data servers and unified web monitoring system; and
  • to enhance user interaction, outreach, expand membership and partnerships.

GSICS results are being used for climate data records processing activities, for example the 
Sustained Coordinated Processing of Environmental Satellite Data for Climate Monitoring (SCOPE-CM) initiative.

GSICS User Workshops are convened on a regular basis.

See: "Shaping GSICS to meet future challenges: A vision for GSICS in the 2020's" ( November 2013).