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Title: Multiple mechanisms generate a universal scaling with dissipation for the air-water gas transfer velocity

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2016GL072256· OSTI ID:1465345
ORCiD logo [1]; ORCiD logo [2]
  1. Duke Univ., Durham, NC (United States). Nicholas School of the Environment; Duke Univ., Durham, NC (United States). Dept. of Civil and Environmental Engineering
  2. Washington State Univ., Pullman, WA (United States). Dept. of Civil and Environmental Engineering

A large corpus of field and laboratory experiments support the finding that the water side transfer velocity kL of sparingly soluble gases near air-water interfaces scales as kL~(νε)1/4, where ν is the kinematic water viscosity and ε is the mean turbulent kinetic energy dissipation rate. Originally predicted from surface renewal theory, this scaling appears to hold for marine and coastal systems and across many environmental conditions. It is shown that multiple approaches to representing the effects of turbulence on kL lead to this expression when the Kolmogorov microscale is assumed to be the most efficient transporting eddy near the interface. The approaches considered range from simplified surface renewal schemes with distinct models for renewal durations, scaling and dimensional considerations, and a new structure function approach derived using analogies between scalar and momentum transfer. The work offers a new perspective as to why the aforementioned 1/4 scaling is robust.

Research Organization:
Duke Univ., Durham, NC (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0006967; SC0011461; NSF-EAR-1344703; NSF-DGE-1068871; NSF-AGS-1112938
OSTI ID:
1465345
Alternate ID(s):
OSTI ID: 1402208
Journal Information:
Geophysical Research Letters, Vol. 44, Issue 4; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (2)

Turbulence Scaling Comparisons in the Ocean Surface Boundary Layer journal March 2018
Gas exchange in streams and rivers journal October 2019