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Assessment of tropical cyclones in Ecmwf Reanalysis Data over Northwest Pacific Ocean

Li, Jiangxia, Pan, Shunqi, Chen, Yongping and Pan, Yi 2017. Assessment of tropical cyclones in Ecmwf Reanalysis Data over Northwest Pacific Ocean. Presented at: 27th International Ocean and Polar Engineering Conference, San Francisco, USA, 25-30 Jun 2017. The 27th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers, -.

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Abstract

In this study, vorticity analysis is carried out on the ECMWF reanalysis data of sea surface wind speed, to identify the track of tropical cyclones (TCs) in the Northwest Pacific Ocean region over a period of three years (2013-2015). The maximum wind speed in the adjacent of the identified TC centre is also extracted from the ECMWF reanalysis data. The typhoon tracks and the maximum wind speed extracted from reanalysis data are then compared with the Best-Track data to assess the representation of TCs in the ECMWF reanalysis data. The results show that the locations of TC tracks can be reasonably determined from the ECMWF data by the vorticity in the studied period. However, the correlation between the vorticity and intensity of the TC is poor. The maximum wind speed of the TCs are found to be significantly lower than the Best-Track data. This study provides some quantification and guidance on the use of ECMWF reanalysis data for the predictions of storm waves and surges in the NWP region.

Item Type: Conference or Workshop Item (Paper)
Status: Published
Schools: Engineering
Publisher: International Society of Offshore and Polar Engineers
ISBN: 9781880653975
Last Modified: 06 Jun 2019 10:15
URI: http://orca.cf.ac.uk/id/eprint/121040

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