The curious case of the intersensor radiometric comparison of SNPP VIIRS M11 with Aqua MODIS B7

Mike Chu; Junqiang Sun; Menghua Wang

doi:10.1117/12.2272434

5 September 2017 The curious case of the intersensor radiometric comparison of SNPP VIIRS M11 with Aqua MODIS B7

Mike Chu, Junqiang Sun, Menghua Wang

Proceedings Volume 10402, Earth Observing Systems XXII; 104022E (2017) https://doi.org/10.1117/12.2272434
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The inter-sensor radiometric comparison of the 2257 nm channel (M11) of SNPP VIIRS and the 2130 nm channel (B7) of Aqua MODIS curiously demonstrates a wildly varying time series, in stark contrast to the very stable results of other band pairs. A link is found between the few statistically robust outcomes in the time series and the land-based snowy scenes, specifically of Antarctica. With a refined procedure including a selection of land-based snowy scenes, we are able to generate a viable comparison time series of radiance of Aqua MODIS B7 over that of SNPP VIIRS M11. The refined time series shows multi-year stability and hovers around 0.39. The connection between the observed behaviors and their non-overlapping relative spectral responses (RSRs) is discussed.

Citation Download Citation

Mike Chu, Junqiang Sun, and Menghua Wang "The curious case of the intersensor radiometric comparison of SNPP VIIRS M11 with Aqua MODIS B7", Proc. SPIE 10402, Earth Observing Systems XXII, 104022E (5 September 2017); https://doi.org/10.1117/12.2272434

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