Abstract
The Global Space-Based Inter-calibration System (GSICS) is a sixteen consortium of satellite operating agencies that have come together to monitor in-orbit satellite sensors by comparing them with stable references.
GSICS has developed and deployed algorithms that can leverage the stability of instruments such as CrIS, VIIRS, ATMS, and IASI by multiple methods. These include Simultaneous Nadir Overpass (SNO), Ray-Matching, and Indirect Double difference comparisons to monitor in-orbit geostationary satellites, including the GOES, Meteosat, FY-2/4, Himawari, and COMS geostationary series. GSICS contributors provide over 76 bias monitoring products for operational satellites. These are disseminated through its Product Catalog (Product Catalog). Each year GSICS provides a summary of operational satellite performance to the Coordination Group for Meteorological Satellites and member agencies.
Lunar calibration is one of the GSICS methods for calibrating visible and near-infrared (Vis/NIR) wavelength sensors in orbit, leveraging the stability of the Moon’s surface reflectance. A recent GSICS lunar calibration workshop included a focus session on improving the models that provide lunar radiometric reference.
Recently, GSICS has also begun handling inter-calibration of space-based space weather sensors. Most of these sensors are in-situ measurement, and this represents a new challenge.
This presentation’s goal is to introduce the range of GSICS methods and their applications in operational satellite sensor monitoring and measurement bias removal and to summarize satellite performance over past years.
Global Space-Based Inter-Calibration System: An Operational Satellite Monitoring Framework
The Global Space-Based Inter-calibration System (GSICS) is a sixteen consortium of satellite operating agencies that have come together to monitor in-orbit satellite sensors by comparing them with stable references.
GSICS has developed and deployed algorithms that can leverage the stability of instruments such as CrIS, VIIRS, ATMS, and IASI by multiple methods. These include Simultaneous Nadir Overpass (SNO), Ray-Matching, and Indirect Double difference comparisons to monitor in-orbit geostationary satellites, including the GOES, Meteosat, FY-2/4, Himawari, and COMS geostationary series. GSICS contributors provide over 76 bias monitoring products for operational satellites. These are disseminated through its Product Catalog (Product Catalog). Each year GSICS provides a summary of operational satellite performance to the Coordination Group for Meteorological Satellites and member agencies.
Lunar calibration is one of the GSICS methods for calibrating visible and near-infrared (Vis/NIR) wavelength sensors in orbit, leveraging the stability of the Moon’s surface reflectance. A recent GSICS lunar calibration workshop included a focus session on improving the models that provide lunar radiometric reference.
Recently, GSICS has also begun handling inter-calibration of space-based space weather sensors. Most of these sensors are in-situ measurement, and this represents a new challenge.
This presentation’s goal is to introduce the range of GSICS methods and their applications in operational satellite sensor monitoring and measurement bias removal and to summarize satellite performance over past years.