Atmospheric correction for JPSS-2 VIIRS response versus scan angle measurements

Jeff McIntire; Chris Moeller; Hassan Oudrari; Xiaoxiong Xiong

doi:10.1117/12.2272796

5 September 2017 Atmospheric correction for JPSS-2 VIIRS response versus scan angle measurements

Jeff McIntire, Chris Moeller, Hassan Oudrari, Xiaoxiong Xiong

Proceedings Volume 10402, Earth Observing Systems XXII; 104021K (2017) https://doi.org/10.1117/12.2272796
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The Joint Polar Satellite System 2 (JPSS-2) Visible Infrared Imaging Radiometer Suite (VIIRS) includes one spectral band centered in a strong atmospheric absorption region. As much of the pre-launch calibration is performed under laboratory ambient conditions, accurately accounting for the absorption, and thereby ensuring the transfer of the sensor calibration to on-orbit operations, is necessary to generate science quality data products. This work is focused on the response versus scan angle (RVS) measurements, which characterize the relative scan angle dependent reflectance of the JPSS-2 VIIRS instrument optics. The spectral band of interest, centered around 1378 nm, is within a spectral region strongly effected by water vapor absorption. The methodology used to model the absolute humidity and the atmospheric transmittance under the laboratory conditions is detailed. The application of this transmittance to the RVS determination is then described including an uncertainty estimate; a comparison to the pre-launch measurements from earlier sensor builds is also performed.

Conference Presentation

Citation Download Citation

Jeff McIntire, Chris Moeller, Hassan Oudrari, and Xiaoxiong Xiong "Atmospheric correction for JPSS-2 VIIRS response versus scan angle measurements", Proc. SPIE 10402, Earth Observing Systems XXII, 104021K (5 September 2017); https://doi.org/10.1117/12.2272796

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