Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 818-835 |
| Number of pages | 18 |
| Journal | Journal of Geophysical Research: Oceans |
| Volume | 121 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2016 |
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A reconciliation of empirical and mechanistic models of the air-sea gas transfer velocity. / Goddijn-Murphy, Lonneke; Woolf, David Kevin; Callaghan, Adrian; Nightingale, Philip; Shutler, Jamie.
In: Journal of Geophysical Research: Oceans, Vol. 121, No. 1, 01.2016, p. 818-835.Research output: Contribution to journal › Article
TY - JOUR
T1 - A reconciliation of empirical and mechanistic models of the air-sea gas transfer velocity
AU - Goddijn-Murphy, Lonneke
AU - Woolf, David Kevin
AU - Callaghan, Adrian
AU - Nightingale, Philip
AU - Shutler, Jamie
PY - 2016/1
Y1 - 2016/1
N2 - Models of the air-sea transfer velocity of gases may be either empirical or mechanistic. Extrapolations of empirical models to an unmeasured gas or to another water temperature can be erroneous if the basis of that extrapolation is flawed. This issue is readily demonstrated for the most well-known empirical gas transfer velocity models where the influence of bubble-mediated transfer, which can vary between gases, is not explicitly accounted for. Mechanistic models are hindered by an incomplete knowledge of the mechanisms of air-sea gas transfer. We describe a hybrid model that incorporates a simple mechanistic view—strictly enforcing a distinction between direct and bubble-mediated transfer—but also uses parameterizations based on data from eddy flux measurements of dimethyl sulphide (DMS) to calibrate the model together with dual tracer results to evaluate the model. This model underpins simple algorithms that can be easily applied within schemes to calculate local, regional, or global air-sea fluxes of gases.
AB - Models of the air-sea transfer velocity of gases may be either empirical or mechanistic. Extrapolations of empirical models to an unmeasured gas or to another water temperature can be erroneous if the basis of that extrapolation is flawed. This issue is readily demonstrated for the most well-known empirical gas transfer velocity models where the influence of bubble-mediated transfer, which can vary between gases, is not explicitly accounted for. Mechanistic models are hindered by an incomplete knowledge of the mechanisms of air-sea gas transfer. We describe a hybrid model that incorporates a simple mechanistic view—strictly enforcing a distinction between direct and bubble-mediated transfer—but also uses parameterizations based on data from eddy flux measurements of dimethyl sulphide (DMS) to calibrate the model together with dual tracer results to evaluate the model. This model underpins simple algorithms that can be easily applied within schemes to calculate local, regional, or global air-sea fluxes of gases.
U2 - 10.1002/2015JC011096
DO - 10.1002/2015JC011096
M3 - Article
VL - 121
SP - 818
EP - 835
JO - Journal of Geophysical Research: Oceans
JF - Journal of Geophysical Research: Oceans
SN - 2169-9291
IS - 1
ER -