The Met Office Global Coupled Model 3.0 and 3.1 (GC3.0 and GC3.1) Configurations
By K. Williams, D. Copsey, E. Blockley, A. Bodas‐Salcedo, D. Calvert, R. Comer, P. Davis, T. Graham, Helene Hewitt, R. Hill and 19 more. 2017
484 citations recorded by the source corpus.
The Global Coupled 3 (GC3) configuration of the Met Office Unified Model is presented. Among 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 descriptions 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 predictability on shorter time scales (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 extratropical variability and top‐of‐atmosphere and 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.
Subfields: Atmospheric Science, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/afab081aee3cfae5cf540f5a5d7422d120b44282
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In Global and Planetary Change
Citations in the corpus
- CMIP6 Models Predict Significant 21st Century Decline of the Atlantic Meridional Overturning Circulation (2020, background): “Our results support the emerging body of literature that suggests relationships between AMOC mean strength and the role of the AMOC in the climate response to radiative forcing (e.g., Garuba et al., 2018; Rugenstein et al., 2013; Trossman et al., 2016; Winton et al., 2013, 2014).”