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Tropical Cyclone Tracking Using a Neighbor Enclosed Area Tracking Algorithm

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Title: Tropical Cyclone Tracking Using a Neighbor Enclosed Area Tracking Algorithm
Authors: Satake, Yuya Browse this author
Inatsu, Masaru Browse this author →KAKEN DB
Mori, Masato Browse this author
Hasegawa, Akira Browse this author
Issue Date: Oct-2013
Publisher: American Meteorological Society
Journal Title: Monthly Weather Review
Volume: 141
Issue: 10
Start Page: 3539
End Page: 3555
Publisher DOI: 10.1175/MWR-D-12-00092.1
Abstract: Tropical cyclone (TC) tracking is essential for calculating TC statistics from gridded datasets. A new method for TC tracking is presented here using neighbor enclosed area tracking (NEAT), which is based on the temporal overlap of enclosed areas above a vorticity threshold and differs from the widely used neighbor point tracking (NPT) method. The parameters of cyclone intensity, vertical-shear, and warm-core criteria were intensively tuned for NEAT and NPT. When these criteria were optimized for the typhoon tracks observed in the western North Pacific based on the Japanese 25-yr Reanalysis Project (JRA-25)/Japan Meteorological Agency (JMA) Climate Data Assimilation System (JCDAS) dataset, the NEAT and NPT algorithms captured approximately 85% of typhoons with little qualitative distortion in the spatial distribution and temporal variability of the TC track density. The grid system dependency of the algorithms was tested by applying NEAT and NPT to a high-resolution general circulation model output. The method presented here can also provide realistic statistics on the TC size, the extratropical transition timing, and the meridional heat transport.
Rights: © Copyright 2013 American Meteorological Society (AMS).
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 稲津 將

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