一、引言 利用气象卫星红外照片提取无云海区的海面温度信息,进而对海洋锋面、海流、上升流、涡漩等进行观测与研究,已为许多海洋学家所重视(Legeckis,1978)。在人造卫星出现之前,要得到海面温度模式的大尺度同步测量资料是不可能的。船舶本来就不能以所要求的时间和空间复盖来进行这样的测量。气象学所需要的海面温度图往往要综合25—50年或更长时间的船测资料来绘制(Mclain et al.,1977),对海洋学来说,这种资料虽然能够反映出海洋热结构的总趋势,但用来研究海洋的动态变化和精细结构就显得不够适 I. INTRODUCTION The observation and research on ocean front, ocean currents, updrafts and vortices using meteorological satellite infrared images to extract sea surface temperature information from cloudless sea areas have been taken seriously by many oceanographers (Legeckis, 1978). Before the advent of satellites, it was not possible to obtain large-scale simultaneous measurements of sea surface temperature patterns. The ship could not have done so with the required time and space coverage. The sea surface temperature maps required by meteorology are often mapped based on ship-derived data of 25-50 years or more (Mclain et al., 1977). For oceanography, this data can reflect the ocean thermal structure However, it is not appropriate to study the dynamic changes and the fine structure of the oceans