319 Toward Eddy Covariance CO2 Flux Measurement Capability on an Ocean Buoy

Monday, 13 January 2020
Hall B (Boston Convention and Exhibition Center)
Jason M. Covert, Univ. at Albany, SUNY, Albany, NY; and S. D. Miller, D. Vandemark, M. Emond, S. Shellito, I. Bogoev, and E. Swiatek

Handout (2.6 MB)

Direct air-sea CO2 flux measurements using eddy covariance (EC) can be used to evaluate and improve ocean-atmosphere gas exchange parameterizations in global models. While EC CO2 fluxes from research vessels have improved over the last 20 years, existing data sets are of limited duration, and significant technical challenges remain, such as air flow distortion about ships. An alternative is to use moored platforms such as ocean buoys that could enable longer deployments and are less affected by flow distortion. For CO2, major hurdles in buoy-based EC flux measurements include sea spray effects on gas analyzer performance, significant power limitations, and sensitivity of commercially available infrared gas analyzers to platform motion. We present preliminary results from a collaborative effort to develop a robust, low-power EC air-sea CO2 flux system that can be deployed on buoys.
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