海表浅层水体温度剖面测量设备研发与实现

Development and Realization of Surface Shallow Water Temperature Profile Measurement Equipment

海表水体温度是海洋的一个重要特征,为了得到海表浅层水体即海面以下0~10 m深度范围内水体的垂直温度剖面,本文设计了一种基于红外测温原理的接触式测量方式的海表浅层水体温度剖面测量设备。该设备使用红外热像仪测量与水体接触的导温片的温度来间接得到海水温度,并通过排布较为密集的导温片得到垂直分辨率较小的水体温度剖面,最小测温点间距可达2 cm。设备内部使用了校正黑体进行实时校正,得到较为精确的导温片温度。设备在实验室进行了黑体定标实验及实验室水槽模拟实验,测温精度可达±0.1℃。实验结果表明,该设备测量水体温度具有较好精度,且容易部署,可得到测量范围内海水垂直分辨率较小的温度剖面。该设备在一定程度上可以提高海水温度剖面垂直分辨率,可以为卫星观测海温的误差修正提供实地测量参考。

Surface water temperature is an important feature of the ocean.In order to obtain the vertical temperature profile of surface water,that is,0-10m depth below the sea surface,this paper designed a surface surface water temperature profile measurement device based on the infrared temperature mea-surement principle.The seawater temperature was obtained indirectly by measuring the temperature of the temperature guide plates in contact with the water by infrared thermal imager,and the water temperature profile with low vertical resolution was obtained by placing more dense temperature guide plates,with the minimum temperature measurement point spacing up to 2 cm.Correction black body is used inside the equipment for real-time correction,and the more accurate temperature of the temperature guide plate is obtained.Black-body calibration experiment and laboratory flume simulation experiment have been carried out in the laboratory,and the temperature measurement accuracy can reach±0.1℃.The experimental results show that the device has a good accuracy in measuring water temperature,and it is easy to deploy,and the temperature profile with low vertical resolution can be obtained within the measurement range.The equipment can improve the vertical resolution of sea water temperature profile to a certain extent and provide reference for field measurement of SST error correction by satellite observation.