摘要
结合卫星高度计资料,本文在海洋中尺度涡旋综合识别法(综合法)的基础上,利用实测资料对识别的涡旋边界和中心点进行比对验证,得出以下结论:(1)通过诊断涡旋识别的边界切线与实测海流矢量的夹角,结果表明综合法识别的涡旋边界形态基本可以反映实测涡旋的水平形态;(2)利用实测海流和温度资料反演涡旋中心,通过与综合法识别的涡旋中心进行比对,结果显示涡旋识别的中心位置与反演的涡旋中心位置基本吻合。此外,通过比对圆与椭圆对识别涡旋的边界拟合效果,结果显示椭圆拟合准确率高于圆拟合准确率。
Based on the hybrid detection method for ocean mesoscale eddy,this paper uses the measured data to verify the detected boundary and center of eddy,and draws the following conclusions.(1)By diagnosing the angle between the detected boundary and the measured current vector,the results show that the detected boundary of eddy can basically reflect the current state of the actual eddy.(2)The center of detected eddy is compareed with the center that inversed by the measured current and temperature data.The results show that the detected center of eddy is basically consistent with the inversed center.Furthermore,by comparing the fitting effect of circle and ellipse to the detected boundary of eddy,the results show that the fitting accuracy of ellipse is higher than that of circle.
作者
彭汉帮
王金虎
吴克亮
杨春辉
Peng Hanbang;Wang Jinhu;Wu Keliang;Yang Chunhui(The 92192 Unit of PLA,Ningbo 315122,China)
出处
《海洋学报》
CAS
CSCD
北大核心
2021年第1期61-68,共8页
关键词
中尺度涡
涡旋识别
圆拟合
椭圆拟合
mesoscale eddy
eddy detection
circle fitting
ellipse fitting
