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The use of Argo for validation and tuning of mixed layer models

The use of Argo for validation and tuning of mixed layer models
The use of Argo for validation and tuning of mixed layer models
We present results from validation and tuning of 1-D ocean mixed layer models using data from Argo floats and data from Ocean Weather Station Papa (145°W, 50°N). Model tests at Ocean Weather Station Papa showed that a bulk model could perform well provided it was tuned correctly. The Large et al. [Large, W.G., McWilliams, J.C., Doney, S.C., 1994. Oceanic vertical mixing: a review and a model with a nonlocal boundary layer parameterisation. Rev. Geophys. 32 (November), 363–403] K-profile parameterisation (KPP) model also gave a good representation of mixed layer depth provided the vertical resolution was sufficiently high. Model tests using data from a single Argo float indicated a tendency for the KPP model to deepen insufficiently over an annual cycle, whereas the tuned bulk model and general ocean turbulence model (GOTM) gave a better representation of mixed layer depth. The bulk model was then tuned using data from a sample of Argo floats and a set of optimum parameters was found; these optimum parameters were consistent with the tuning at OWS Papa.
1463-5003
53-69
Acreman, D.M.
67d72c91-d961-47d9-8c24-e260aa317345
Jeffery, C.D.
fcdcf12f-3139-4605-8f52-8af2092ba5b0
Acreman, D.M.
67d72c91-d961-47d9-8c24-e260aa317345
Jeffery, C.D.
fcdcf12f-3139-4605-8f52-8af2092ba5b0

Acreman, D.M. and Jeffery, C.D. (2007) The use of Argo for validation and tuning of mixed layer models. Ocean Modelling, 19 (1-2), 53-69. (doi:10.1016/j.ocemod.2007.06.005).

Record type: Article

Abstract

We present results from validation and tuning of 1-D ocean mixed layer models using data from Argo floats and data from Ocean Weather Station Papa (145°W, 50°N). Model tests at Ocean Weather Station Papa showed that a bulk model could perform well provided it was tuned correctly. The Large et al. [Large, W.G., McWilliams, J.C., Doney, S.C., 1994. Oceanic vertical mixing: a review and a model with a nonlocal boundary layer parameterisation. Rev. Geophys. 32 (November), 363–403] K-profile parameterisation (KPP) model also gave a good representation of mixed layer depth provided the vertical resolution was sufficiently high. Model tests using data from a single Argo float indicated a tendency for the KPP model to deepen insufficiently over an annual cycle, whereas the tuned bulk model and general ocean turbulence model (GOTM) gave a better representation of mixed layer depth. The bulk model was then tuned using data from a sample of Argo floats and a set of optimum parameters was found; these optimum parameters were consistent with the tuning at OWS Papa.

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Published date: 2007

Identifiers

Local EPrints ID: 49282
URI: https://eprints.soton.ac.uk/id/eprint/49282
ISSN: 1463-5003
PURE UUID: 4f2bc5b6-bc65-4dc4-a194-36562101197a

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Date deposited: 26 Oct 2007
Last modified: 13 Mar 2019 20:54

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