Diagnosis for cyclones with a novel tracking algorithm

2015 Fiscal Year Final Research Report

• Project/Area Number: 25800259
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Hokkaido University
• Principal Investigator: Inatsu Masaru 北海道大学, 理学(系)研究科(研究院), 准教授 (80422450)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 温帯低気圧

Outline of Final Research Achievements

We realised three points below, which are related to the evaluation on the detailed analysis for individual cyclone property by using a novel tracking algorithm. (i) The relationship between eddy geometry and eddy dynamics near the tropopause were clarified, especially in terms of consistency between ellipse form of eddies and westerly momentum transport that was unveiled. (ii) The algorithm was applied to tropical cyclones. We established an objective trace with revealing individual typhoon property from observed meteorological data. (iii) The extratropical cyclone catalogue for cyclones passing around Japan was created. We opened them in the website, considering the consistency with subjective synoptic weather chart to contribute to an operational use as historical record of cyclones.

Free Research Field

気象学