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The RAPID ocean observation array at 26.5°N in the HadCM3 model

Hermanson, Leon and Haines, Keith and Sutton, Rowan (2010) The RAPID ocean observation array at 26.5°N in the HadCM3 model. In: NCAS Conference 2010 , 5-7 July 2010, Palace Hotel, Manchester, UK.

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Official URL: http://valor.nerc.ac.uk

Abstract

The RAPID array consists of several moorings at about 26°N in the Atlantic that measure temperature and salinity from which the meridional overturning circulation (MOC) and its components at this latitude can be determined. The main aim of the VALue Of the RAPID array (VALOR) project is to assess the value of the RAPID array observations for predictions of the Atlantic MOC and its impact on climate. In addition, the project will explore a range of issues concerning the design of a potentional MOC prediction system. One of the models used in this work is the Hadley Centre HadCM3 model. In this work we have investigated the potential issues that may arise when comparing RAPID array observations and its derived transports with model variables. This could be for comparing an ocean assimilation or an ocean forecast with observations. The main issue is the low resolution of the HadCM3 ocean (1.25°x1.25°), which changes the bathymetry. As an example, most of Florida does not exist, so the Florida Straits, which is a crucial part of the observations, is missing. The possibility of moving the model array further north to where there is a Florida is investigated, but no convincing reason to do so is found.

Item Type: Conference or Workshop Item (Poster)
Uncontrolled Keywords: RAPID-WATCH, HadCM3
Subjects: Meteorology and Climatology
Depositing User: Dr Leon Hermanson
Date Deposited: 23 Jul 2010 08:24
Last Modified: 23 Jul 2010 08:24
URI: http://cedadocs.ceda.ac.uk/id/eprint/808

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