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Final C6 L1B Changes


Aqua:

    The MODIS Characterization Support Team (MCST) implemented several improvements in calibration methodology for the C6 L1 product (MYD01). For the Reflective Solar Bands (RSBs), the major change for C6 is a revised methodology that linked the long-term trending of selected pseudo-invariant Earth targets to the performance trending of the on-board calibrator observations (Solar Diffuser and moon) that removed a long-term drift observed in the C5 dataset. For the Thermal Emissive Bands (TEB), a revised approach for derivation of the offset and nonlinear calibration coefficients improved retrievals for cold scenes. The uncertainties for both RSB and TEB were updated, and time-dependent Look Up Tables (LUTs) are included for the first time.

Terra:

    The MODIS Characterization Support Team (MCST) implemented several improvements in calibration methodology for the C6 L1 product (MOD01). For the Reflective Solar Bands (RSBs), the major change for C6 is a revised methodology that supplemented the performance trending of the on-board calibrator observations (Solar Diffuser and moon) with long-term trending of selected pseudo-invariant Earth targets. This change removes a long-term drift observed in the C5 dataset and improves the characterization of the angle dependence of the scan mirror reflectivity. For the Thermal Emissive Bands (TEB), a revised approach for derivation of the offset and nonlinear calibration coefficients improves retrievals for cold scenes. The uncertainties for both RSB and TEB were updated, and time-dependent Look Up Tables (LUTs) are included for the first time.

Details:


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Curator: Demi Feng & Qingsong Sun
NASA Official: Edward Masuoka

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