TY - JOUR
T1 - Southern ocean response to relative velocity wind stress forcing
AU - Hutchinson, David K.
AU - Hogg, Andrew Mc C.
AU - Blundell, Jeffrey R.
PY - 2010/2
Y1 - 2010/2
N2 - An eddy-resolving quasigeostrophic model of the Southern Ocean coupled to a dynamic atmospheric mixed layer is used to compare the performance of two different wind stress parameterization schemes. The first is the standard quadratic drag law, based on atmospheric velocity alone, whereas the second (more exact) formulation is based on the difference between ocean and atmosphere velocities. The two different schemes give very similar magnitudes of mean stress; however, the relative velocity scheme has substantially lower power input, resulting in a weaker eddy field, and consequently, greater circumpolar transport. These results are explored in terms of the existing theories of the Antarctic Circumpolar Current (including eddy saturation and eddy damping) and the implications for modeling the Southern Ocean are discussed.
AB - An eddy-resolving quasigeostrophic model of the Southern Ocean coupled to a dynamic atmospheric mixed layer is used to compare the performance of two different wind stress parameterization schemes. The first is the standard quadratic drag law, based on atmospheric velocity alone, whereas the second (more exact) formulation is based on the difference between ocean and atmosphere velocities. The two different schemes give very similar magnitudes of mean stress; however, the relative velocity scheme has substantially lower power input, resulting in a weaker eddy field, and consequently, greater circumpolar transport. These results are explored in terms of the existing theories of the Antarctic Circumpolar Current (including eddy saturation and eddy damping) and the implications for modeling the Southern Ocean are discussed.
UR - http://www.scopus.com/inward/record.url?scp=77953334455&partnerID=8YFLogxK
U2 - 10.1175/2009JPO4240.1
DO - 10.1175/2009JPO4240.1
M3 - Article
SN - 0022-3670
VL - 40
SP - 326
EP - 339
JO - Journal of Physical Oceanography
JF - Journal of Physical Oceanography
IS - 2
ER -