Journal article
Comparison of the Semtner and Chervin eddy-resolving global ocean model with LUCIE and satellite observations in the Leeuwin Current region
Marine and Freshwater Research, Vol.47(3), pp.509-516
1996
Abstract
Output from the Semtner and Chervin eddy-resolving global ocean general circulation model is compared with observations from the Leeuwin Current Interdisciplinary Experiment (LUCIE) and satellite data for the coastal waters of Western Australia. The model output is a snapshot over the domain 9-43ºS, 90-120ºE for a day in mid July 1987, which is during the season that the Leeuwin Current is expected to be well established along the western and southern coasts of Western Australia. Maximum Leeuwin Current velocities in the model are of the order of 60 cm s-1 and are found in the southern part of the current on the western coast and around into the Great Australian Bight. At depths below about 200 m, and centred near 400 m, there is an equatorward-flowing undercurrent with maximum velocity of order 25 cm s-1. Comparison of temperature and salinity cross-sections with LUCIE observations reveals that the model output for this day exhibits many realistic features. In particular, the model fields display a number of prominent meanders and eddies on the Leeuwin Current as well as further offshore. Consistent with observations, mesoscale features associated with the Leeuwin Current are concentrated between 25ºS and the Cape Mentelle region; the flow in the northern part of the Leeuwin Current and the North West Shelf may be too weak to induce eddy-generating instabilities. Prominent in the model output are two large meanders on the Leeuwin Current between 25ºS and 29ºS and two anticyclonic eddies further downstream; features similar to these are evident in satellite data during winter 1987.
Details
- Title
- Comparison of the Semtner and Chervin eddy-resolving global ocean model with LUCIE and satellite observations in the Leeuwin Current region
- Authors/Creators
- C.J.C. Reason (Author/Creator)A.F. Pearce (Author/Creator)
- Publication Details
- Marine and Freshwater Research, Vol.47(3), pp.509-516
- Publisher
- CSIRO Publishing
- Identifiers
- 991005541060607891
- Copyright
- © CSIRO 1996
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 8 Earth Sciences
- 8.19 Oceanography, Meteorology & Atmospheric Sciences
- 8.19.153 Ocean Circulation
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- Fisheries
- Limnology
- Marine & Freshwater Biology
- Oceanography
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- Plant & Animal Science