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OU Earth Science Mission ‘Geocarb’ Moves Ahead to Critical Design Review
GeoCarb has been approved to move ahead to critical design review that will complete the final review of the GeoCarb instrument design. The review will evaluate instrument design, configuration, and launch. The CDR was performed January 29-31 in Palo Alto, CA, where the instrument was confirmed ready for build.
A Scanning Strategy Optimized for Signal-to-Noise Ratio for the Geostationary Carbon Cycle Observatory (GeoCarb) Instrument
by Jeffrey Nivitanont, Sean M. R. Crowell, and Berrien Moore, III
A scanning strategy is proposed for the upcoming GeoCarb instrument that minimizes predicted retrieval errors of CO2 by optimizing signal-to-noise ratio with respect to air mass factor and solar zenith angle. The strategy is generated using a modified greedy algorithm that optimizes over these stationary processes while also considering operational constraints. This method increases the number of soundings with predicted CO2 retrieval error less than 2 ppm by 18–41 %.
The 2015-2016 Carbon Cycle As Seen from OCO-2 and the Global In Situ Network
by Sean Crowell, et. al
Space-based retrievals of carbon dioxide offer the potential to provide dense data in regions that are sparsely observed by the surface network. We find that flux estimates that are informed by the Orbiting Carbon Observatory-2 (OCO-2) show different character from that inferred using surface measurements in tropical land regions, particularly in Africa, with a much larger total emission and larger amplitude seasonal cycle.
The Potential of the Geostationary Carbon Cycle Observatory (GeoCarb) to Provide Multi-scale Constraints on the Carbon Cycle in the Americas
by Berrien Moore, et Al.
In this paper, we introduce the instrument and the GeoCarb Mission, and we demonstrate the potential scientific contribution of the mission through a series of CO2 and CH4 simulation experiments. We find that GeoCarb will be able to constrain emissions at urban to continental spatial scales on weekly to annual time scales. The GeoCarb mission particularly builds upon the Orbiting Carbon Obserevatory-2 (OCO-2), which is flying in Low Earth Orbit.
Bringing Together Science and Technology
Watching Earth Breathe
GeoCarb will measure the carbon cycle as the western hemisphere breathes in and out every day — watching how Earth’s seasons change through the eyes of the biosphere.
Studying Earth's Carbon Cycle From Space
The GeoCarb observatory will provide a record number of high-quality measurements of carbon dioxide, methane and carbon monoxide in the atmosphere in unprecedented detail. With these observations, scientists can begin to unravel the many sources and sinks in the carbon cycle.
A New View of the Americas
The unique spectrometer on the observatory will produce daily scans of landmasses in the western hemisphere. Shorter revisit times and larger coverage area, made possible by geostationary orbit, will deliver observations of the carbon cycle that are beyond the reach of observatories currently in orbit.
Monitoring Vegetation Health
Solar Induced Fluorescence (SIF) is a direct indicator of photosynthesis and shows the impact of environmental stressors such as drought - an important measure of ecosystem health.