Measurement uncertainty in gas exchange coefficients

J. S. Gulliver, B. Erickson, A. J. Zaske, K. S. Shimon

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations


A technique to measure the gas exchange coefficient (transfer velocity) from a three-dimensional unsteady tracer cloud on large water bodies is described. Arguments based on first principles are presented in support of the technique. For this reason, the measurement uncertainty is apparent and can be quantified analytically. The dual gas exchange measurement technique was tested and results are discussed through computational experiments that simulate a tracer cloud and incorporate random sampling. Measurements of gas exchange coefficient are undertaken in Chequamegon Bay of Lake Superior. The intensive sampling regression technique developed was used in these measurements, and a minimum percent uncertainty was used to determine an optimum analysis period. Results were determined with a 4 to 9 hour sampling period, with no preliminary mixing period.

Original languageEnglish (US)
Title of host publicationGas Transfer at Water Surfaces, 2002
EditorsW.M. Drennan, E.S. Saltzman, M.A. Donelan, R. Wanninkhof
PublisherBlackwell Publishing Ltd
Number of pages7
ISBN (Electronic)9781118668634
ISBN (Print)9780875909868
StatePublished - Jan 1 2001

Publication series

NameGeophysical Monograph Series
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779

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    Gulliver, J. S., Erickson, B., Zaske, A. J., & Shimon, K. S. (2001). Measurement uncertainty in gas exchange coefficients. In W. M. Drennan, E. S. Saltzman, M. A. Donelan, & R. Wanninkhof (Eds.), Gas Transfer at Water Surfaces, 2002 (pp. 239-245). (Geophysical Monograph Series; Vol. 127). Blackwell Publishing Ltd.