Abstract
The objective of this study is to identify potential problems of and increase confidence in the operational calibration of the water vapor channel of the Meteosat Visible and Infrared Radiation Imager (MVIRI). First, the operational vicarious calibration method of the MVIRI water vapor channel is analyzed. This is done through a comparison of the operational calibration coefficient with a calibration coefficient derived from collocated satellite observations taken by water‐vapor‐sensitive channel 12 of the High Resolution Infrared Sounder (HIRS) on NOAA 14. The analysis suggests a relatively large difference between the two calibration coefficients, the operational calibration coefficient being 10–15% larger than the one from the intersatellite calibration. Second, no such difference is found to exist between the MVIRI operational calibration coefficient and an intersatellite calibration coefficient derived from collocated GOES 8 water‐vapor‐sensitive channel 3 observations. Third, it is shown that the operational calibration coefficient for the MVIRI water vapor channel on Meteosat 7 is consistent with its blackbody calibration. At the present stage of the research no definite conclusions can be made. The results support the previously documented accuracy of 5% for the operational calibration coefficient of the MVIRI water vapor channel.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
