Surface shear stress dependence of gas transfer velocity parameterizations using DNS
Journal article, 2016
Air-water gas-exchange is studied in direct numerical simulations (DNS) of free-surface flows driven by natural convection and weak winds. The wind is modeled as a constant surface-shear-stress and the gas-transfer is modeled via a passive scalar. The simulations are characterized via a Richardson number Ri=Bν/u*4 where B, ν, and u* are the buoyancy flux, kinematic viscosity, and friction velocity respectively. The simulations comprise 0Ric or kg=Ashearu*Sc-n, Ri
Gas transfer velocity
Heat flux
Wind
Direct numerical simulations
Turbulence
Air-sea gas exchange
Natural convection
Surface cooling
Author
Sam Fredriksson
University of Gothenburg
Lars Arneborg
University of Gothenburg
Håkan Nilsson
Chalmers, Applied Mechanics, Fluid Dynamics
Robert Handler
Texas A&M University
Journal of Geophysical Research
01480227 (ISSN) 21562202 (eISSN)
Vol. 121 10 7369-7389Driving Forces
Sustainable development
Roots
Basic sciences
Infrastructure
C3SE (Chalmers Centre for Computational Science and Engineering)
Subject Categories (SSIF 2011)
Oceanography, Hydrology, Water Resources
Climate Research
DOI
10.1002/2016JC011852