A summary of wind stress. A very important concept for large scale ocean circulation models.
Relative wind stress is a shear stress that is produced by wind blowing over the surface of the ocean, or another large body of water. Relative wind stress is related to wind stress but takes the difference between the surface ocean current velocity and wind velocity into account. The units are Newton per meter squared or Pascal . Wind stress over the ocean is important as it is a major source of kinetic energy input to the ocean which in turn drives large scale ocean circulation.[1] The use of relative wind stress instead of wind stress, where the ocean current is assumed to be stationary, reduces the stress felt over the ocean in models. This leads to a decrease in the calculation of power input into the ocean of 20–35% and thus, results in a different simulation of the large scale ocean circulation.[2]
Figure 1: Monthly relative wind stress throughout 2020. Data for relative wind stress was gathered from the "Global Ocean Daily Gridded Reprocessed L4 Sea Surface Winds from Scatterometer" from the Copernicus Marine Institute.[2]
^Ferrari, Raffaele; Wunsch, Carl (1 January 2009). "Ocean Circulation Kinetic Energy: Reservoirs, Sources, and Sinks". Annual Review of Fluid Mechanics. 41 (1): 253–282. Bibcode:2009AnRFM..41..253F. doi:10.1146/annurev.fluid.40.111406.102139.
^ abCite error: The named reference :2 was invoked but never defined (see the help page).
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Global Information![{\displaystyle [Nm^{-2}]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/cec09d1ac0d1f16e2514f195d7bf0cef300080b3)
![{\displaystyle [Pa]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/141481fdbe16b3e8955d450fc109f416b5f7ad0c)
