MODIS thermal emissive bands calibration stability using in-situ ocean targets and remotely-sensed SST retrievals provided by the group for high resolution sea surface temperature

Carlos Pérez Díaz; Xiaoxiong Xiong; Aisheng Wu

doi:10.1117/12.2518691

10 May 2019 MODIS thermal emissive bands calibration stability using in-situ ocean targets and remotely-sensed SST retrievals provided by the group for high resolution sea surface temperature

Carlos Pérez Díaz, Xiaoxiong Xiong, Aisheng Wu

Author Affiliations +

Proceedings Volume 11014, Ocean Sensing and Monitoring XI; 110140P (2019) https://doi.org/10.1117/12.2518691
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

MODIS has 16 Thermal Emissive Bands (TEBs) whose wavelengths range from 3.7μm to 14.4μm and are calibrated using scan-by-scan observations of its on-board blackbody (BB). Specific Earth surface targets are used to track the long-term consistency, stability, and relative bias between the two MODIS instruments onboard the Terra and Aqua satellites. Previous studies displayed that cold targets have exhibited a relative bias (between Terra and Aqua MODIS Band 31 (11μm)) of less than 0.10K for more than a decade. However, these brightness temperatures are typically outside the MODIS BB calibration range. Hence, in-situ and remotely-sensed (RS) sea surface temperature (SST) measurements provide useful references for the more characteristic higher scene temperatures. Prior literature indicates that the MODIS TEBs have not been extensively evaluated for calibration stability using warmer targets for Collection 6.1 (C6.1), as it was recently implemented. This manuscript expands on the techniques previously applied to all TEBs using SST ocean buoys as reference for C6 by extending the long-term calibration stability and relative bias (between Terra and Aqua MODIS) discussion to present day and incorporating RS data provided by The Group for High Resolution Sea Surface Temperature (GHRSST) as proxy.

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Citation Download Citation

Carlos Pérez Díaz, Xiaoxiong Xiong, and Aisheng Wu "MODIS thermal emissive bands calibration stability using in-situ ocean targets and remotely-sensed SST retrievals provided by the group for high resolution sea surface temperature", Proc. SPIE 11014, Ocean Sensing and Monitoring XI, 110140P (10 May 2019); https://doi.org/10.1117/12.2518691

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