摘要
基于2017版全球海洋Argo网格数据集(BOA-Argo),利用最大角度法和梯度比值法等客观分析方法计算了2004年1月—2016年12月期间,西太平洋海域(25°S^40°N,120°~180°E)的上混合层和温跃层上、下界深度,并计算了混合层温盐度以及温跃层强度等海洋环境参数,制作完成水平分辨率为1°×1°的月平均Argo数据衍生产品。将本数据产品和采用阈值法计算得到MILA GPV数据集做比较,结果显示:对于混合层的主要空间分布特征和时间序列变化特征,两者都十分吻合;将西太平洋海域温跃层上、下界深度和强度等参数与人们利用传统的温度梯度法计算结果相比较,其季节分布特征及变化趋势也大体相符。
Base on the newest BOA-Argo data set, gridded(1° latitude ×1° longitude) and climatological monthly of mixed layer depth(MLD) and thermocline parameters of the West Pacific(25oS-40oN, 120o-180oE)ocean from January 2004 to December 2016 has been developed. The MLD was calculated by maximum angle method and parameters of thermocline were estimated by gradient ratio method. When comparing with MILA GPV data set calculated by threshold method, both of the two climatological MLD show that the spatial and temporal variations of the MLD were very similar with each other. The results of the thermocline parameters calculated by gradient ratio method are also roughly consistent with those estimated by traditional temperature gradient method.
作者
杨小欣
吴晓芬
卢少磊
YANG Xiao-xin;WU Xiao-fen;LU Shao-lei(PLA Dalian Naval Academy,Dlian 116000 China;State Key Laboratory of Satellite Ocean Environment Dynamics,the Second Institute of Oceangraphy;State Oceanic Administration,Hangzhou 310012 China)
出处
《海洋预报》
北大核心
2018年第3期57-67,共11页
Marine Forecasts
基金
国家自然科学基金青年科学基金(41406022)
国家科技基础性工作专项(2012FY112300)
国家海洋局第二海洋研究所基本科研业务费专项资金项目(JG1622)