Measurements of air–sea gas transfer velocities in the Baltic Sea
Heat transfer velocities measured during three different campaigns in the Baltic Sea using the active controlled flux technique (ACFT) with wind speeds ranging from 5.3 to 14.8 m s−1 are presented. Careful scaling of the heat transfer velocities to gas transfer velocities using Schmidt number expone...
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Veröffentlicht in: | Ocean science 2019-03, Vol.15 (2), p.235-247 |
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Sprache: | eng |
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Zusammenfassung: | Heat transfer velocities measured during three different
campaigns in the Baltic Sea using the active controlled flux technique (ACFT)
with wind speeds ranging from 5.3 to 14.8 m s−1 are presented. Careful
scaling of the heat transfer velocities to gas transfer velocities using
Schmidt number exponents measured in a laboratory study allows us to compare
the measured transfer velocities to existing gas transfer velocity
parameterizations, which use wind speed as the controlling parameter. The
measured data and other field data clearly show that some gas transfer
velocities are much lower than those based on the empirical wind speed
parameterizations. This indicates that the dependencies of the transfer
velocity on the fetch, i. e., the history of the wind and the age of the
wind-wave field, and the effects of surface-active material need to be taken
into account. |
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ISSN: | 1812-0792 1812-0784 1812-0792 |
DOI: | 10.5194/os-15-235-2019 |