海洋标量场时空过程远程动态可视化服务研究

A Study on Remote Dynamic Visual Service for Spatio-temporal Process of Marine Scalar Field

随着多源、大面海洋遥感数据及其反演产品呈指数形式增加,利用网络实现远程长时间序列的海洋标量场动态可视化查询、分析,成为海洋信息服务的迫切需求之一。本文在深入分析现有海量数据网络动态可视化技术及海洋标量场时空变化过程的特点时,针对海洋标量场数据探讨标量场的点过程和面过程的网络可视化表达。并以海表温度数据为例,介绍了从MODIS的海表温度反演产品到网络发布的整个处理流程,构建了中国台海区域海表温度场时空过程的网络可视化原型系统。在该原型系统中,实现了海表温度场任意点位的温度查询,任意点位温度时间变化的过程曲线,温度场面过程时空过程动态演进可视化分析等功能。同时该原型系统可以为其他海洋标量场的时空过程可视化提供技术与方法借鉴。

With the exponential increase of marine remote sensing data and their retrieval productions, it has been an urgent requirement for marine information services to dynamic visual express, query and analyze the marine spa- rio-temporal process through the Web. Based on the analysis of the resent network visualization technologies for the massive data and the characteristics of spatio-temporal process of marine scalar field, this paper discusses the net- work visual expression for point process and polygon process of marine scalar field. A new method to realize the re- mote realization for the marine spatio-temporal process has been proposed here and a prototype system has been set up to visualize the sea surface temperature（SST）of Taiwan Strait through the Web. In this prototype system, some functions were accomplished, such as the value query in the whole process and the process curve drawing of any random point in the SST field, the visual analysis for the polygon process in the SST field.