A verification of the POP model within CCSM2 : can changes of ocean climate be detected?

Abstract

1 Abstract A control run of 150 years for CCSM2 has been performed at the Norwegian Meteorological Institute. In this run the external forcing(especially radiation) were held constant, CO2 were held at the level of 1990. CO2 in-fiences only the atmosphere and the the carbon cycle between ocean and atmosphere is not included. Both ocean, ice, and atmosphere will vary as a function of time in this run, although we might not be able to compare model data directly with the observed data, it is however possible to observe variations in atmospheric climate, extension of the SST, ocean circulation, and ocean hydrography(which is the most common type of data that we have, both modern as well as paleo data).What we are most interested in is to investigate the role of the meridional ocean circulation in this system, as variations of it often is used as a measure of the role the ocean circulation might have in this system. The survey should be started on a more global scale and should thereafter be expanded to a smaller scale, which means of dividing this up into boxes. In this document we will especially focus ourselves on the subtropical and mid-latitude part of the Atlantic sector, where the meridional circulation and heat transport is the greatest. We will be considering the following: SST, SSS Mean Ocean temperature Mean Salinity Comparisons of temperature for Lev/POP Temperature Anomalies SST Anomalies Volume and Heat transports.