Cited by 674Marine and coastal ecosystemsOcean Waves and Remote SensingOceanographic and Atmospheric Processes

A cubic relationship between air‐sea CO2 exchange and wind speed

Wanninkhof, Rik, McGillis, Wade R.·1999·Geophysical Research Letters

Abstract

Using recent laboratory and field results we explore the possibility of a cubic relationship between gas exchange and instantaneous (or short‐term) wind speed, and its impact on global air‐sea fluxes. The theoretical foundation for such a dependency is based on retardation of gas transfer at low to intermediate winds by surfactants, which are ubiquitous in the world's oceans, and bubble‐enhanced transfer at higher winds. The proposed cubic relationship shows a weaker dependence of gas transfer at low wind speed and a significantly stronger dependence at high wind speed than previous relationships. A long‐term relationship derived from such a dependence, combined with the monthly CO 2 climatology of Takahashi [1997], leads to an increase in the global annual oceanic CO 2 uptake from 1.4 Gigaton C yr−1 to 2.2 Gigaton C yr−1. Although a cubic relationship fits within global bomb‐14 C oceanic uptake constraints, additional checks are warranted, particularly at high wind speeds where the enhancement is most pronounced.

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Crossref · 10.1029/1999gl900363

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20 of 20 references verified0 citation errors · 0 not checkable

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  • If hydrocarbons originate from the sea, an exponential relationship between measured mixing ratios and wind speed can be expected due to the flux dependency on wind strength.

    “If the hydrocarbons originate from the sea, then an exponential relationship between the measured mixing ratios and wind speed can be expected due to the flux dependency on wind strength27,28.”

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Authors
Wanninkhof, R., & McGillis, W. R.
Affiliations
  • NOAA Atlantic Oceanographic and Meteorological Laboratories (US)
  • Woods Hole Oceanographic Institution (US)
Venue
Geophysical Research Letters
Published
1999-07
Volume
26
Issue
13
Pages
1889-1892
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2091945915
Cited by
674
References
20
Citations by year
2026: 12 · 2025: 14 · 2024: 17 · 2023: 20 · 2022: 18 · 2021: 22 · 2020: 15 · 2019: 11 · 2018: 31 · 2017: 19 · 2016: 17 · 2015: 26 · 2014: 23 · 2013: 32 · 2012: 21
FWCI
15.93
Type
journal article
Language
en
Open access
closed
Locations
Geophysical Research Letters (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Ocean Waves and Remote Sensing
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
Keywords
air-sea CO2 flux, gas transfer velocity, wind speed dependence, surfactants, global carbon fluxes, ocean surface fluxes

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