11:45 AM - 12:00 PM
[AOS17-05] A probabilistic forecast of the Kuroshio current path variability using an 80-member ensemble simulation.
Keywords:Ensemble forecast, Data assimilation, Clustering
This study aims to describe the probabilistic behavior of the Kuroshio current path variability using an 80-member ensemble simulation in a high-resolution numerical regional ocean model, JCOPE. This simulation provides the outputs for 4 months starting from the initial conditions optimized by the data assimilation (LETKF) for one months. All the members are found to predict the non-large meander path at first 2 months, but some members predict the large meander path after that. We propose a method of quantifying the occurrence/non-occurrence of the branch, the probabilities of each path, and a set of the mean and spread for each path by a machine learning method.