Four-dimensional variational ocean reanalysis: a 30-year high-resolution dataset in the western North Pacific (FORA-WNP30)
Four-dimensional variational ocean reanalysis: a 30-year high-resolution dataset in the western North Pacific (FORA-WNP30)
复制标题
DOI：
10.1007/s10872-016-0398-5
复制
发表时间：
2017-04
影响因子：
2.3
通讯作者：
N. Usui;Tsuyoshi Wakamatsu;Yusuke Tanaka;N. Hirose;T. Toyoda;Shiro Nishikawa;Y. Fujii;Yasushi Takatsuki-Y
中科院分区：
文献类型：
--
作者：
N. Usui;Tsuyoshi Wakamatsu;Yusuke Tanaka;N. Hirose;T. Toyoda;Shiro Nishikawa;Y. Fujii;Yasushi Takatsuki-Y
我们对西北太平洋30年来的四维变分海洋再分析(FRA-WNP30)进行了研究。这是有史以来第一个覆盖西北太平洋30年来涡旋分辨率的数据集。利用气象研究所多变量海洋变分估计系统(MOVE-4DVAR)的四维变分分析方案版本，在1982-2012年进行了一次长期再分析试验。在评估了FORA-WNP30的基本性能后，分析了年际和年代际变化。总体而言，FORA-WNP30很好地再现了西北太平洋的基本特征。FORA-WNP30的突出特点之一是成功地再现了20世纪80年代没有高度计数据的黑潮大弯曲和俄亥俄河异常入侵等异常事件。因此，FORA-WNP30对于各种海洋学研究课题，以及气候研究、气象学和渔业等相关领域，都是一个有价值的数据集。
We produced a four-dimensional variational ocean re-analysis for the Western North Pacific over 30 years (FORA-WNP30). It is the first-ever dataset covering the western North Pacific over 3 decades at eddy-resolving resolution. The four-dimensional variational analysis scheme version of the Meteorological Research Institute Multivariate Ocean Variational Estimation system (MOVE-4DVAR) is employed to conduct a long-term reanalysis experiment during 1982–2012. After evaluating the basic performance of FORA-WNP30, the interannual to decadal variability is analyzed. Overall, FORA-WNP30 reproduces basic features in the western North Pacific well. One of outstanding features in FORA-WNP30 is that anomalous events such as the Kuroshio large meander and anomalous intrusion of the Oyashio in the 1980s, when there were no altimeter data, are successfully reproduced. FORA-WNP30 is therefore a valuable dataset for a variety of oceanographic research topics and potentially for related fields such as climate study, meteorology and fisheries.