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Modelling Temperature and Salinity in Liverpool Bay and the Irish Sea: Sensitivity to Model Type and Surface Forcing : Volume 9, Issue 2 (17/02/2012)

By O'Neill, C. K.

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Book Id: WPLBN0003976201
Format Type: PDF Article :
File Size: Pages 37
Reproduction Date: 2015

Title: Modelling Temperature and Salinity in Liverpool Bay and the Irish Sea: Sensitivity to Model Type and Surface Forcing : Volume 9, Issue 2 (17/02/2012)  
Author: O'Neill, C. K.
Volume: Vol. 9, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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O'dea, E. J., Holt, J. T., Polton, J. A., & O'neill, C. K. (2012). Modelling Temperature and Salinity in Liverpool Bay and the Irish Sea: Sensitivity to Model Type and Surface Forcing : Volume 9, Issue 2 (17/02/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: National Oceanography Centre, Liverpool, UK. Three shelf sea models are compared against observed surface temperature and salinity in Liverpool Bay and the Irish Sea: a 7 km NEMO model, and 12 km and 1.8 km POLCOMS models. Each model is run with two different surface forcing datasets of different resolutions.

Comparisons with a variety of observations from the Liverpool Bay Coastal Observatory show that increasing the surface forcing resolution improves the modelled surface temperature in all the models, in particular reducing the summer warm bias and winter cool bias. The response of surface salinity is more varied with improvements in some areas and deterioration in others.

The 7 km NEMO model performs as well as the 1.8 km POLCOMS model when measured by overall skill scores although the sources of error in the models are different. NEMO is too weakly stratified in Liverpool Bay, whereas POLCOMS is too strongly stratified. The horizontal salinity gradient, which is too strong in POLCOMS, is better reproduced by NEMO which uses a more diffusive horizontal advection scheme. This leads to improved semi-diurnal variability in salinity in NEMO at a mooring site located in the Liverpool Bay ROFI area.


Summary
Modelling temperature and salinity in Liverpool Bay and the Irish Sea: sensitivity to model type and surface forcing

Excerpt
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