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New paper published about MODIS/VIIRS cross-calibration and improvement of aerosol retrieval

Time series of VIIRS gain correction factors

Time series of spectral gain corrections developed in the study, to bring MODIS and VIIRS into radiometric consistency. Red lines indicate the correction and shaded grey the one standard deviation of correction estimates within each month.


We are pleased to announce the publication of a new paper in the journal Atmospheric Measurement Techniques, here. The satellite instrument VIIRS is being used to carry on observations of the Earth made by older satellites like MODIS. Data sets created from these satellite observations depend on the quality of the satellite instruments' calibration. This paper describes a comparison between the calibration of these two sensors. MODIS is believed to be more reliable and so VIIRS is corrected to bring it in line with MODIS. These corrections are shown to improve the quality of VIIRS aerosol data. This has important implications for multi-sensor data continuity, and data quality.


The full reference for this paper is:


Sayer, A. M., N. C. Hsu, C. Bettenhausen, R. E. Holz, J. Lee, Q. Quinn, and P. Veglio (2017), Cross-calibration of S-NPP VIIRS moderate-resolution reflective solar bands against MODIS Aqua over dark water scenes, Atmos. Meas. Tech., 10, 1425-1444, doi:10.5194/amt-10-1425-2017.