Diurnal variation in surface pCO2 and O2 at 60°N, 20°W in the North Atlantic

J. E. Robertson, A. J. Watson, Chris Langdon, R. D. Ling, J. W. Wood

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A method for rapid determination of the partial pressure of carbon dioxide at the sea-surface is described. The method was employed along with a pulsed oxygen electrode to monitor daily changes in surface pCO2 and O2 close to a drifting buoy deployed at approximately 59°N, 20°W. During a 4 day period a gradual rise in oxygen saturation and corresponding fall in pCO2 was observed in the surface layer. Corrections are made for gas exchange of O2 using wind speed data, the correction being an important fraction of the supersaturation observed in the water. Estimates of net community production and photosynthetic quotients are derived, giving a range of PQs from 0.9 to 1.5. Though variations in the local hydrography reduce the accuracy of these estimates, the potential of this approach to estimate productivity appears promising.

Original languageEnglish
Pages (from-to)409-422
Number of pages14
JournalDeep-Sea Research Part II
Volume40
Issue number1-2
DOIs
StatePublished - Jan 1 1993
Externally publishedYes

Fingerprint

diurnal variation
oxygen
hydrography
supersaturation
partial pressure
gas exchange
surface layer
sea surface
electrode
carbon dioxide
wind velocity
saturation
rapid methods
wind speed
productivity
hydrology
electrodes
monitoring
water
method

ASJC Scopus subject areas

  • Aquatic Science
  • Geology
  • Oceanography
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Diurnal variation in surface pCO2 and O2 at 60°N, 20°W in the North Atlantic. / Robertson, J. E.; Watson, A. J.; Langdon, Chris; Ling, R. D.; Wood, J. W.

In: Deep-Sea Research Part II, Vol. 40, No. 1-2, 01.01.1993, p. 409-422.

Research output: Contribution to journalArticle

Robertson, J. E. ; Watson, A. J. ; Langdon, Chris ; Ling, R. D. ; Wood, J. W. / Diurnal variation in surface pCO2 and O2 at 60°N, 20°W in the North Atlantic. In: Deep-Sea Research Part II. 1993 ; Vol. 40, No. 1-2. pp. 409-422.
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