The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments |
| |
| Authors: | C Gordon C Cooper C A Senior H Banks J M Gregory T C Johns J F B Mitchell R A Wood |
| |
| Institution: | (1) Hadley Centre for Climate Prediction and Research, Bracknell, UK E-mail: cgordon@meto.gov.uk, GB |
| |
| Abstract: | Results are presented from a new version of the Hadley Centre coupled model (HadCM3) that does not require flux adjustments
to prevent large climate drifts in the simulation. The model has both an improved atmosphere and ocean component. In particular,
the ocean has a 1.25° × 1.25° degree horizontal resolution and leads to a considerably improved simulation of ocean heat transports
compared to earlier versions with a coarser resolution ocean component. The model does not have any spin up procedure prior
to coupling and the simulation has been run for over 400 years starting from observed initial conditions. The sea surface
temperature (SST) and sea ice simulation are shown to be stable and realistic. The trend in global mean SST is less than 0.009 °C
per century. In part, the improved simulation is a consequence of a greater compatibility of the atmosphere and ocean model
heat budgets. The atmospheric model surface heat and momentum budget are evaluated by comparing with climatological ship-based
estimates. Similarly the ocean model simulation of poleward heat transports is compared with direct ship-based observations
for a number of sections across the globe. Despite the limitations of the observed datasets, it is shown that the coupled
model is able to reproduce many aspects of the observed heat budget.
Received: 1 October 1998 / Accepted: 20 July 1999 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
