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OCO-3 Level 0 spacecraft attitude and ephemeris data VEarly (OCO3_L1aAE) at GES DISC

The Orbiting Carbon Observatory -3 (OCO-3) was deployed to the International Space Station in May, 2019. It is technically a single instrument, almost identical to OCO-2. OCO-3 "Early" version is an expedited version intended for provisional familiarizing with the instrument spectral and calibration properties. The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. OCO-3 incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and in molecular oxygen (O2) A-Band at 0.76 micrometers. The three spectrometers have different characteristics and are calibrated independently. This collection encompass the pointing angles, as well as the position and velocity, of the spacecraft for each orbit. It contains L0 instrument science data (e.g., raw voltages, counts) at full resolution, time ordered, with duplicates and transmission errors removed.

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