Thanks are given to the Met Office for providing the analysis data and the Unified Model. The Universities Weather Research Network support is also acknowledged. In particular, Dr. Peter Panagi, Dr. Chang Wang, and Dr. Lois Steenman-Clark are acknowledged for providing the software to calculate and plot some of the diagnostics, as well as providing support on running the Unified Model. This work has benefited from numerous discussions with Dr. Suzanne Gray and Sally Furness. The comments by Dr. Suzanne Gray on the first draft of the manuscript are greatly appreciated. The help and encouragement from Prof. Sarah Jones in the revision stage of the paper is also greatly acknowledged. Also, thanks are given to the anonymous reviewers for their positive and constructive comments, which helped to improve the manuscript.
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