NDLI: Interdecadal change in typhoon genesis condition over the western North Pacific

Content Provider	Springer Nature Link
Author	Choi, Yumi Ha, Kyung Ja Ho, Chang Hoi Chung, Chul Eddy
Copyright Year	2015
Abstract	The interdecadal changes in typhoon (categories 1–3) frequency and its genesis condition over the western North Pacific during the period of 1979–2011 are investigated with consideration for discrepancies among best track datasets. To tide over data uncertainty, a detection-produced dataset is utilized as a homogeneous dataset with five available best track datasets. Typhoon experienced interdecadal changes around the mid-1990s and the mid-2000s in their genesis conditions. Even under the oceanic warm state, typhoon frequency has decreased since the mid-1990s, showing a northwestward movement of its genesis location over the main formation region. The eastward gradient of vertical wind shear is the most significant factor for the change in typhoon genesis condition in recent decades. The vertical wind shear behavior is strongly linked with zonal asymmetry of local SST. We demonstrate that a westward gradient of local SST is the most important modulator of the recent typhoon behavior through the movement of favorable genesis location. The present results indicate that the horizontal distribution, not magnitude, of local SST can be a key factor for prediction of future typhoon activity, thus contributing to natural disaster mitigation and climate change adaptation strategies.
Starting Page	3243
Ending Page	3255
Page Count	13
File Format	PDF
ISSN	09307575
Journal	Climate Dynamics
Volume Number	45
Issue Number	11-12
e-ISSN	14320894
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-03-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Typhoon frequency Typhoon activity Genesis condition Vertical wind shear Interdecadal change SST gradient Geophysics/Geodesy Climatology Oceanography
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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