Japan Geoscience Union Meeting 2019

Presentation information

[J] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-OS Ocean Sciences & Ocean Environment

[A-OS17] Kuroshio Large Meander

Tue. May 28, 2019 10:45 AM - 12:15 PM 106 (1F)

convener:Toru Miyama(Japan Agency for Marine-Earth Science and Technology, Application Laboratory), Norihisa Usui(Meteorological Research Institute), Takashi Setou(National Research Institute of Fisheries Science, Fisheries Research and Education Agency), Chairperson:Toru Miyama, Takashi Setou, Norihisa Usui

10:45 AM - 11:00 AM

[AOS17-01] The progress of the Kuroshio large meander in and after 2017

★Invited Papers

*Toshiyuki Sakurai1, Mikitoshi Hirabara1, Yoshikazu Fukuda1, Mika Kimura1, Kotaro Mine1, Masaomi Takahashi1, Kensaku Kobayashi1, Yuka Okunaka1, Hiromu Kobayashi1 (1.Japan Meteorological Agency)

Keywords:The Kuroshio, Kuroshio large meander, Forecast, Ocean Data Assimilation

Office of Marine Prediction (OMP) at Japan Meteorological Agency (JMA) has been routinely operating an ocean data assimilation and prediction system for the western North Pacific (MOVE/MRI.COM-WNP) since March 2008. This system aims to represent ocean characteristics such as the Kuroshio/Oyashio current and meso-scale eddies. Using MOVE/MRI.COM-WNP, OMP provides ocean state information of major currents around Japan (Kuroshio/Oyashio/Tsushima-Warm-Current) and water temperatures in the western North Pacific mainly through the JMA website.
In August 2017, the Kuroshio developed a large meander (LM) for the first time in 12 years. A small meander that developed southeast of Japan’s Kyushu Island in late March 2017 and propagated eastward to waters off the country’s Tokai region in August is considered to have induced the Kuroshio LM. In August, MOVE/MRI.COM-WNP successfully forecasted the generation of the Kuroshio LM and JMA published a press release about the probabilityof the Kuroshio LM.
This presentation shows the progress of the Kuroshio LM in and after 2017 as contrasted with the past cases.