caa a22 4500 605472505 CHVBK 20210128100338.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00382-015-2536-y doi (NATIONALLICENCE)springer-10.1007/s00382-015-2536-y Interdecadal change in typhoon genesis condition over the western North Pacific [Elektronische Daten] [Yumi Choi, Kyung-Ja Ha, Chang-Hoi Ho, Chul Chung] 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. Springer-Verlag Berlin Heidelberg, 2015 Typhoon frequency nationallicence Typhoon activity nationallicence Genesis condition nationallicence Vertical wind shear nationallicence Interdecadal change nationallicence SST gradient nationallicence Choi Yumi Division of Earth Environmental System, Pusan National University, 609-735, Busan, Republic of Korea aut Ha Kyung-Ja Division of Earth Environmental System, Pusan National University, 609-735, Busan, Republic of Korea aut Ho Chang-Hoi Climate Physics Laboratory, School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea aut Chung Chul Division of Atmospheric Sciences, Desert Research Institute, Reno, USA aut Climate Dynamics Springer Berlin Heidelberg 45/11-12(2015-12-01), 3243-3255 0930-7575 45:11-12<3243 2015 45 382 https://doi.org/10.1007/s00382-015-2536-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-015-2536-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Yumi Division of Earth Environmental System, Pusan National University, 609-735, Busan, Republic of Korea aut NATIONALLICENCE 700 1- Ha Kyung-Ja Division of Earth Environmental System, Pusan National University, 609-735, Busan, Republic of Korea aut NATIONALLICENCE 700 1- Ho Chang-Hoi Climate Physics Laboratory, School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Chung Chul Division of Atmospheric Sciences, Desert Research Institute, Reno, USA aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 45/11-12(2015-12-01), 3243-3255 0930-7575 45:11-12<3243 2015 45 382