Journal article

5-day-wave interactions with tropical precipitation in CMIP5 models

MJ King, MC Wheeler, TP Lane

Journal of Climate | American Meteorological Society | Published : 2016

Abstract

The 5-day Rossby-Haurwitz wave is unlike other large-scale wave modes that interact with tropical rainfall in that associated rainfall presents as a modulation of localized areas of rainfall instead of propagating with the wave. This form of wave-modulated convective organization in climate models has received little attention. This study investigates the simulation of interactions between the 5-day wave and tropical convection in 30 models from phase 5 of the Coupled Model Intercomparison Project (CMIP5) and compares these with the interaction diagnosed from ERA-Interim and TRMM precipitation data. Models simulate the dry dynamics of the 5-day wave well, with realistic coherences between up..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council's Centres of Excellence scheme


Funding Acknowledgements

ERA-Interim data used in this study were provided by ECMWF and obtained from the ECMWF data server, and TRMM data were obtained from the NASA Goddard Earth Sciences (GES) Data and Information Services Center (DISC). This study was supported by the Australian Research Council's Centres of Excellence scheme (Grant CE110001028) and by an Australian Postgraduate Award for the first author. Research was undertaken with the assistance of resources from the National Computational Infrastructure (NCI) facility, which is supported by the Australian government. The authors acknowledge the World Climate Research Programme's Working Group on Coupled Modelling, which is responsible for CMIP, and thank the climate modeling groups for producing and making available their model output. The U.S. Department of Energy's Program for Climate Model Diagnosis and Intercomparison provides coordinating support for CMIP and led development of software infrastructure in partnership with the Global Organization for Earth System Science Portals. The authors also thank Jorgen Frederiksen, Hongyan Zhu, Stefan Tulich, and two anonymous reviewers for their feedback and comments on the manuscript.