Journal article
Resolution dependence of tropical cyclone formation in CMIP3 and finer resolution models
K Walsh, S Lavender, E Scoccimarro, H Murakami
Climate Dynamics | Published : 2013
Abstract
Detection of tropical lows is performed in a suite of climate model simulations using objectively-determined detection thresholds that are resolution-dependent. It is found that there is some relationship between model resolution and tropical cyclone formation rate even after the resolution-dependent tropical cyclone detection threshold is applied. The relationship is investigated between model-simulated tropical cyclone formation and a climate-based tropical cyclone Genesis Potential Index (GPI). It is found that coarser-resolution models simulate the GPI better than they simulate formation of tropical cyclones directly. As a result, there appears to be little relationship from model to mod..
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Funding Acknowledgements
The authors would like to thank the ARC Network for Earth System Science, Woodside Energy, the Commonwealth Scientific and Industrial Research Organisation (CSIRO) Climate Adaptation Flagship and their respective institutions for providing funding for this work. We would also like to thank Deborah Abbs of CSIRO for her detailed comments on an earlier draft of this work. We would like to thank CSIRO for the use of their tropical cyclone detection routine. We would also like to thank Aurel Moise of the Australian Bureau of Meteorology, and Aaron McDonough and Peter Edwards of CSIRO for assistance with obtaining CMIP3 model output.