TY - JOUR
T1 - IGCM4: A fast, parallel and flexible intermediate climate model
AU - Joshi, Manoj
AU - Stringer, Marc
AU - van der Wiel, Karin
AU - O'Callaghan, Amee
AU - Fueglistaler, Stephan
N1 - © Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.
Code availability: The code is available to scientific researchers on request by emailing [email protected] in the first instance. Websites detailing different IGCM configurations are given in Sect. 2.2. IGCM4 requires as a prerequisite a Fortran compiler, the nupdate code management utility and MPI routines for parallel integrations (although IGCM4 is designed to run on one processor).
Funding information: A. O’Callaghan acknowledges the support of the UK Natural Environment Research Council (NERC).
Acknowledgements. Model simulations were carried out on the High Performance Computing Cluster supported by the Research and Specialist Computing Support service at the University of East Anglia. OLR and CMAP precipitation data were provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their website at http://www.esrl.noaa.gov/psd/.
PY - 2015/4/23
Y1 - 2015/4/23
N2 - The IGCM4 (Intermediate Global Circulation Model version 4) is a global spectral primitive equation climate model whose predecessors have extensively been used in areas such as climate research, process modelling and atmospheric dynamics. The IGCM4’s niche and utility lies in its speed and flexibility allied with the complexity of a primitive equation climate model. Moist processes such as clouds, evaporation, atmospheric radiation and soil moisture are simulated in the model, though in a simplified manner compared to state-of-the-art global circulation models (GCMs). IGCM4 is a parallelised model, enabling both very long integrations to be conducted and the effects of higher resolutions to be explored. It has also undergone changes such as alterations to the cloud and surface processes and the addition of gravity wave drag. These changes have resulted in a significant improvement to the IGCM’s representation of the mean climate as well as its representation of stratospheric processes such as sudden stratospheric warmings. The IGCM4’s physical changes and climatology are described in this paper.
AB - The IGCM4 (Intermediate Global Circulation Model version 4) is a global spectral primitive equation climate model whose predecessors have extensively been used in areas such as climate research, process modelling and atmospheric dynamics. The IGCM4’s niche and utility lies in its speed and flexibility allied with the complexity of a primitive equation climate model. Moist processes such as clouds, evaporation, atmospheric radiation and soil moisture are simulated in the model, though in a simplified manner compared to state-of-the-art global circulation models (GCMs). IGCM4 is a parallelised model, enabling both very long integrations to be conducted and the effects of higher resolutions to be explored. It has also undergone changes such as alterations to the cloud and surface processes and the addition of gravity wave drag. These changes have resulted in a significant improvement to the IGCM’s representation of the mean climate as well as its representation of stratospheric processes such as sudden stratospheric warmings. The IGCM4’s physical changes and climatology are described in this paper.
U2 - 10.5194/gmd-8-1157-2015
DO - 10.5194/gmd-8-1157-2015
M3 - Article
SN - 1991-9603
VL - 8
SP - 1157
EP - 1167
JO - Geoscientific Model Development
JF - Geoscientific Model Development
IS - 4
ER -
