The combined effect of rain and wind on air-water gas exchange: A feasibility study

Publication Type  Journal Article
Year of Publication  2007
Authors  Ho, D. T.; Veron, F.; Harrison, E.; Bliven, L. F.; Scott, N.; McGillis, W. R.
Journal Title  Journal of Marine Systems
Volume  66
Issue  1-4
Pages  150-160
Journal Date  Jun
ISBN Number  0924-7963
Accession Number  ISI:000247171200015
Key Words  waves

A series of experiments were conducted at University of Delaware's Air-Sea Interaction Laboratory to examine the combined effects of rain and wind on air-water gas exchange. During this study, ASIL WRX I, a combination of 3 rain rates and 4 wind speeds were used, for a total of 12 different environmental conditions. The SF6 evasion method was used to determine the bulk gas transfer velocities, and airside profiles of wind and CO2 were used to estimate flux-profiles of momentum and carbon dioxide. In addition to measurements of fluxes with and without rain in a wind-wave boundary layer, measurements of wave properties were also obtained. Rain is shown to alter the wind profile in the flume, and dampen surface waves. Also, SF6 evasion indicates that with the present experimental setup, for most of the experimental conditions, rain and wind combine linearly to influence air-water gas exchange. Flux-profile relationships for marine atmospheric boundary layers, which were performed to scale up to field measurements, were explored by a comparison between SF6-derived bulk fluxes and airside CO2 profile measurements. (c) 2006 Elsevier B.V All rights reserved.


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URL  <Go to ISI>://000247171200015
DOI  DOI 10.1016/j.jmarsys.2006.02.012