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一、引 言 在赤道太平洋海洋气候计划(EPOCS)、环境研究所和国家气象中心(NMC)的支持下,CAC/NMC在1985年提出了一个改进模拟赤道太平洋性能的实时的海洋计划。这个为 海洋总环流模型(OGCM)所选择的模型曾在澳大利亚地球物理流体动力学实验室(GFD-L)得到改进(Philander和Seigel,1985),这个定义在南北纬10°范围内的模式,在竖直方向上有27层,水平方平上取纬向1°,经向1/3°为一个网格。该模式现在用月平均风场作为驱动力,到目前为上,所进行的大部分工作是放在改进该模式正常运算的框架上,该框架最基本的是用来起动和强迫该模式的数据文件.这些数据文件是由次表层温度场、风应力场和净热流场组成的。其中次表层温度场是由前进中的观测船用投弃式温深计(XBT)所测的数据构成的、XBT资料可从全球通讯系统(GTS)获得。上述后两种场,目前也是从船舶观测得来。利用此模式对资料(如风场和次表层温度场)进行处理,来作出热带太平洋状况定期分析。这个能力的改进,正是本计划的直接目的。目前的重点是在上层海洋和改进模拟表层温度场(SST场)的能力上。
I. INTRODUCTION With the support of the Equator Pacific OceanOcean Climate Program (EPOCS), the Institute of Environmental Sciences and the National Meteorological Center (NMC), CAC / NMC proposed in 1985 a real-time ocean plan to improve the simulation of equatorial Pacific performance. This model, selected for the OGCM, was refined at the Australian Geophysical Fluid Dynamics Laboratory (GFD-L) (Philander and Seigel, 1985). This model, defined in the 10 ° latitude and longitude latitude, There are 27 layers in the vertical direction, horizontal latitude 1 °, horizontal latitude 1/3 ° as a grid. This model now uses the monthly mean wind field as the driving force, and most of the work done so far is focused on improving the normal operation of the model, which is basically the data used to start and force the model These data files consist of subsurface temperature field, wind stress field and net heat flow field. The subsurface temperature field consists of data measured by an advancing aboard thermometer (XBT), and XBT data is available from the Global System for Communications (GTS). The latter two fields are currently also observed from the ship. Use this mode to process data, such as wind and subsurface temperature fields, to make periodic analyzes of the tropical Pacific. The improvement of this ability is the direct purpose of this plan. The current focus is on the upper ocean and on improving the ability to simulate the surface temperature field (SST field).