摘要
根据2004-2005年热带印度洋(30°S以北)的Argo浮标(自持式海洋剖面观测浮标)温度-盐度剖面观测资料,采用位势密度判据(Δσθ=0.03 kg/m3),针对每个Argo浮标的温度-盐度观测剖面确定了海洋混合层的深度,然后采用Krig插值方法构建了3°×3°空间分辨率的月平均网格化混合层深度产品。通过与已有气候平均混合层深度资料的比较表明了该产品的合理性,在此基础上进一步对热带印度洋海盆尺度的混合层深度空间特征和季节变化规律进行了讨论。研究结果表明,Argo浮标资料可用于热带印度洋混合层变化的研究,为进一步研究热带印度洋海-气相互作用提供了基础资料。
Based on the Argo float profile data observed in the tropical Indian Ocean （north of 30^oS） in 2004 and 2005, the mixed layer depth （MLD） in the tropical Indian Ocean is determined according to the potential density criteria （△σθ=0.03 kg/m^3）, and the the Krig interpolation method is then used to construct a monthly mean gridded MLD product with a spatial resolution of 3^o× 3^o. It is shown from the comparison between our MLD product and the available climatological MLD data that our product is reasonable, and the spatial characteristics and seasonal variabilities of basin-scale MLD in the tropical Indian Ocean are discussed based on our MLD product. It is shown from the study results that the Argo float data can be used for studying the variations in MLD of the tropical Indian Ocean, which provides basic data for further studying the air-sea interaction in the tropical Indian Ocean.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2007年第3期280-288,共9页
Advances in Marine Science
基金
国家自然科学基金项目--印度洋偶极子事件和太平洋ElNio事件的比较研究(40506012)
国家科技部国际合作重点项目--太平洋-印度洋暖池Argo浮标观测研究(2002CB714001)
