@article{TEXTUAL,
      recid = {13721},
      author = {Valdes, Paul J. and Armstrong, Edward and Badger, Marcus  P. S. and Bradshaw, Catherine D. and Bragg, Fran and  Crucifix, Michel and Davies-Barnard, Taraka and Day,  Jonathan J. and Farnsworth, Alex and Gordon, Chris and  Hopcroft, Peter O. and Kennedy, Alan T. and Lord, Natalie  S. and Lunt, Dan J. and Marzocchi, Alice and Parry, Louise  M. and Pope, Vicky and Roberts, William H. G. and Stone,  Emma J. and Tourte, Gregory J. L. and Williams, Jonny H.  T.},
      title = {The BRIDGE HadCM3 family of climate models: HadCM3@Bristol  v1.0},
      journal = {Geoscientific Model Development},
      address = {2017-10-12},
      number = {TEXTUAL},
      abstract = {Understanding natural and anthropogenic climate change  processes involves using computational models that  represent the main components of the Earth system: the  atmosphere, ocean, sea ice, and land surface. These models  have become increasingly computationally expensive as  resolution is increased and more complex process  representations are included. However, to gain robust  insight into how climate may respond to a given forcing,  and to meaningfully quantify the associated uncertainty, it  is often required to use either or both ensemble approaches  and very long integrations. For this reason, more  computationally efficient models can be very valuable  tools. Here we provide a comprehensive overview of the  suite of climate models based around the HadCM3 coupled  general circulation model. This model was developed at the  UK Met Office and has been heavily used during the last 15  years for a range of future (and past) climate change  studies, but has now been largely superseded for many  scientific studies by more recently developed models.  However, it continues to be extensively used by various  institutions, including the BRIDGE (Bristol Research  Initiative for the Dynamic Global Environment) research  group at the University of Bristol, who have made modest  adaptations to the base HadCM3 model over time. These  adaptations mean that the original documentation is not  entirely representative, and several other relatively  undocumented configurations are in use. We therefore  describe the key features of a number of configurations of  the HadCM3 climate model family, which together make up  HadCM3@Bristol version 1.0. In order to differentiate  variants that have undergone development at BRIDGE, we have  introduced the letter B into the model nomenclature. We  include descriptions of the atmosphere-only model  (HadAM3B), the coupled model with a low-resolution ocean  (HadCM3BL), the high-resolution atmosphere-only model  (HadAM3BH), and the regional model (HadRM3B). These also  include three versions of the land surface scheme. By  comparing with observational datasets, we show that these  models produce a good representation of many aspects of the  climate system, including the land and sea surface  temperatures, precipitation, ocean circulation, and  vegetation. This evaluation, combined with the relatively  fast computational speed (up to 1000 times faster than some  CMIP6 models), motivates continued development and  scientific use of the HadCM3B family of coupled climate  models, predominantly for quantifying uncertainty and for  long multi-millennial-scale simulations.},
      url = {http://knowledge.uchicago.edu/record/13721},
}