the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
DCMIP2016: the tropical cyclone test case
Justin L. Willson
Christiane Jablonowski
James Kent
Peter H. Lauritzen
Ramachandran Nair
Mark A. Taylor
Paul A. Ullrich
Colin M. Zarzycki
David M. Hall
Don Dazlich
Ross Heikes
Celal Konor
David Randall
Thomas Dubos
Yann Meurdesoif
Lucas Harris
Christian Kühnlein
Vivian Lee
Abdessamad Qaddouri
Claude Girard
Marco Giorgetta
Daniel Reinert
Hiroaki Miura
Tomoki Ohno
Ryuji Yoshida
Abstract. This paper describes and analyzes the Reed-Jablonowski (RJ) tropical cyclone (TC) test case used in the 2016 Dynamical Core Model Intercomparison Project (DCMIP2016). The intermediate complexity test case analyzes the evolution of a weak vortex into a TC in an idealized tropical environment. Simulations from 9 general circulation models (GCMs) that participated in DCMIP2016 are analyzed in this study at 50 km horizontal grid spacing, with 5 of these models also providing simulations at 25 km grid spacing for an analysis on the impact of finer grid spacing. Evolution of minimum surface pressure (MSP) and maximum 1 km azimuthally averaged wind speed (MWS), the wind-pressure relationship, radial profiles of wind speed and surface pressure, and wind composites are documented for all participating GCMs at both horizontal grid spacings. While results are generally similar between all models, some GCMs reach significantly higher storm intensities than others, ultimately impacting specific characteristics of their horizontal and vertical structure. TCs simulated at 25 km grid spacings retained these differences, but reach higher intensities and are more compact than their 50 km counterparts. These results indicate dynamical core choice is an essential factor in GCM development, and future work should be conducted to explore how specific differences within the dynamical core affect TC behavior in GCMs.
Justin L. Willson et al.
Status: open (until 07 Jul 2023)
Justin L. Willson et al.
Model code and software
ClimateGlobalChange/DCMIP2016: v1.0 Paul Ullrich, Peter Hjort Lauritzen, Kevin Reed, Christiane Jablonowski, Colin Zarzycki, James Kent, Ramachandran Nair, and Antonin Verlet-Banide https://doi.org/10.5281/zenodo.1298671
Justin L. Willson et al.
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