OS050-05
Wintertime impacts of the 2019 super IOD on East Asia

Wednesday, 16 December 2020: 17:58
Virtual
Takeshi Doi1, Swadhin K Behera2 and Toshio Yamagata2,3, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan, (3)NUIST Nanjing University of Information Science and Technology, Nanjing, China
Recorded Presentation
Abstract:
Many parts of East Asia, including Japan, experienced the extremely warm condition during the 2019–2020 winter. It was successfully predicted in October of 2019 by the 108-members ensemble seasonal prediction system based on the SINTEX-F climate model. By analyzing co-variability of inter-member anomalies defined as deviations from the ensemble mean, we have found that the active convection over the western pole of the Indian Ocean Dipole caused the unusual condition in East Asia by generating the meander of the subtropical jet.
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