Direct measurements of the CO2 flux over the ocean: development of a novel method

Prytherch, J.; Yelland, M.J. ORCID: https://orcid.org/0000-0002-0936-4957; Pascal, R.W.; Moat, B.I. ORCID: https://orcid.org/0000-0001-8676-7779; Skjelvan, I.; Neill, C.. 2010 Direct measurements of the CO2 flux over the ocean: development of a novel method. Geophysical Research Letters, 37. L03607. 10.1029/2009GL041482

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Abstract/Summary

Over the ocean, eddy correlation measurements of the air-sea CO2 flux obtained with open-path sensors have typically been an order of magnitude larger than those estimated by other techniques or sensors. It is shown here that this discrepancy is due to cross sensitivity to water vapor fluctuations: a novel correction procedure is demonstrated, tested against an independent data set and proved to be robust. After correction, the observed gas transfer velocities are in reasonable agreement with published values obtained using closed-path sensors or by tracer techniques. Data from open-path sensors may now be used for air-sea CO2 flux estimation, greatly increasing the information available on air-sea gas transfer velocity.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1029/2009GL041482
ISSN:	0094-8276
Additional Keywords:	gas transfer velocity, air-sea CO2 flux, open-path Licor.
Date made live:	04 Jan 2010 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/171821

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1029/2009GL041482

ISSN:

0094-8276

Additional Keywords:

gas transfer velocity, air-sea CO2 flux, open-path Licor.

Date made live:

04 Jan 2010 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/171821