夏季海洋上混合层深度分布研究-Argo资料与Levitus资料的比较  

Study on Distributions of Mixed Layer Depth in the World Ocean in Summer——Comparison Between Argo Data and Levitus Data

作　　者：芦静[1] 乔方利[1] 魏泽勋[1] 滕涌[1] 夏长水[1] 

机构地区：[1]国家海洋局第一海洋研究所

出　　处：《海洋科学进展》2008年第2期145-155,共11页Advances in Marine Science

基　　金：国家重点基础研究发展规划项目--海气耦合模式的发展和改进(2006CB403605)

摘　　要：利用Argo资料计算了准全球海洋夏季的混合层深度(MLD),并与Levitus资料计算所得的MLD进行了比较。结果表明,用Argo资料计算的全球夏季MLD总体上比Levitus资料的大。低纬20°S^20°N以及南半球40°~60°S等区域Levitus资料计算的MLD大部分明显小于Argo资料计算的MLD;北半球40°~60°N等区域Levitus资料计算的MLD略小于Argo资料的;而20°~40°N以及20°~40°S等混合层较浅的海区以及纬度高于60°N以及60°S的海区2种资料计算的MLD差别不大。南大洋MLD非常大,其中小部分海域用Levitus资料计算的MLD比Argo资料计算的MLD大100 m以上。In this paper, Argo data are used to compute the global mixed layer depth （MLD） in summer, and the computed MLD data are compared with those computed by using Levitus data. It is shown from the comparison results that the MLDs computed by using Argo data are generally larger than those computed by using Levitus data. The MLDs computed by using Levitus data in most of sea areas of 20°S to 20°N and 40°S to 60°S are significantly smaller than those computed by using Argo data; the MLDs computed by using Levitus data in sea area of 40°N to 60°N are slightly smaller than those computed by using Argo data; the differnces between the two MLDs in sea areas of 20°N to 40°N and 20°S to 40°S where the MLD is smaller and in sea areas where the latitude is higher than 60°N or 60°S are small. The MLD in the Southern Ocean is quite large ,and the MLDs computed by using Levitus data in a small part of the Southern Ocean are over 100 m larger than those computed by using Argo data.

关 键 词：ARGO Levitus 混合层深度(MLD) 

分 类 号：P731[天文地球—海洋科学]