Journal article
The Met Office Global Coupled model 3.0 and 3.1 (GC3.0 & GC3.1) configurations
- Abstract:
-
The Global Coupled 3 (GC3) configuration of the Met Office Unified Model is presented. Amongst other applications, GC3 is the basis of the United Kingdom's submission to the Coupled Model Intercomparison Project 6 (CMIP6). This paper documents the model components that make up the configuration (although the scientific description of these components are in companion papers), and details the coupling between them. The performance of GC3 is assessed in terms of mean biases and variability in long climate simulations using present-day forcing. The suitability of the configuration for predictabiity on shorter timescales (weather and seasonal forecasting) is also briefly discussed. The performance of GC3 is compared against GC2, the previous Met Office coupled model configuration, and against an older configuration (HadGEM2-AO) which was the submission to CMIP5.
In many respects, the performance of GC3 is comparable with GC2, however there is a notable improvement in the Southern Ocean warm sea surface temperature bias which has been reduced by 75%, and there are improvements in cloud amount and some aspects of tropical variability. Relative to HadGEM2-AO, many aspects of the present-day climate are improved in GC3 including tropospheric and stratospheric temperature structure, most aspects of tropical and extra-tropical variability and top-of-atmosphere & surface fluxes. A number of outstanding errors are identified including a residual asymmetric sea surface temperature bias (cool northern hemisphere, warm Southern Ocean), an overly strong global hydrological cycle and insufficient European blocking.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Version of record, pdf, 4.7MB, Terms of use)
-
- Publisher copy:
- 10.1002/2017MS001115
Authors
- Publisher:
- Wiley
- Journal:
- Journal of Advances in Modeling Earth Systems More from this journal
- Volume:
- 10
- Issue:
- 2
- Pages:
- 357-380
- Publication date:
- 2018-02-09
- Acceptance date:
- 2017-12-05
- DOI:
- EISSN:
-
1942-2466
- Pubs id:
-
pubs:809654
- UUID:
-
uuid:8f7983ef-3929-4cec-8b83-13eae6d622bc
- Local pid:
-
pubs:809654
- Source identifiers:
-
809654
- Deposit date:
-
2017-12-06
Terms of use
- Copyright holder:
- The Authors and Crown copyright
- Copyright date:
- 2018
- Notes:
- © 2017. The Authors and Crown copyright. This article is published with the permission of the Controller of HMSO and the Queen's Printer for Scotland. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
If you are the owner of this record, you can report an update to it here: Report update to this record