Application of Sensitivity Analysis Using an Adjoint Model for Short-Range Forecasts of the Kuroshio Path South of Japan |
| |
| Authors: | Yoichi Ishikawa Toshiyuki Awaji Nobumasa Komori Takahiro Toyoda |
| |
| Institution: | (1) Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan;(2) Earth Simulator Center, Japan Marine Science and Technology Center, Yokohama 236-0001, Japan;(3) Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan |
| |
| Abstract: | A sensitivity experiment has been performed by assimilating altimetric data into a 1.5-layer primitive equation model as a
first attempt to examine the impact of initialization on forecasts of the Kuroshio path variability south of Japan. By exploiting
the advantage of an adjoint model, our approach clearly shows that a small meander off Shikoku Island has a large impact on
the prediction of meander growth in the Kuroshio region. Further, the strengthening of the Kuroshio current and its recirculation
clearly becomes an important factor in the development of the meander. These results demonstrate the effectiveness of our
assimilation approach in identifying efficient initialization schemes on numerical forecasting of the Kuroshio south of Japan
and should help in the construction of an effective observing system for improving the forecasting.
This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
| Keywords: | Sensitivity analysis adjoint model forecast Kuroshio |
| 本文献已被 SpringerLink 等数据库收录！ |
|
