| The exchange of heat,momentum,and material between the ocean and the atmosphere is continuous,so the ocean has become one of the main factors affecting the global climate.Among them,the temperature change and distribution law of the temperature profile of the water boundary layer at the sea-air interface is important for studying global climate change and interpretation.The physical mechanism of sea-air coupling is of great significance.In order to further study the physical mechanism of the global climate change and the air-sea coupling effect,a variety of technical methods have been used at home and abroad to measure the temperature change and distribution law of the water boundary layer temperature profile of the sea-air interface,including satellite SST remote sensing technology,on-site infrared radiation measurement technology,and on-site measurement technology of thermosalt depth meter.However,the measurement accuracy and spatial resolution of the satellite SST remote sensing technology are low.The measurement accuracy of the on-site infrared radiation measurement technology is easily affected by environmental factors.Due to the size limitations of the instrument,the on-site measurement technology of the temperature and salt depth instrument is in the underwater space.The resolution of temperature is low and the temperature profile cannot be measured simultaneously.The above deficiencies make these measurement techniques not well able to meet the needs of the temperature profile of the water boundary layer at the sea-air interface.Therefore,the research on the refined measurement technology of the temperature profile of the water boundary layer at the sea-air interface is of great significance for studying global climate change and explaining the physical mechanism of the sea-air coupling effect.This paper is mainly research on the following four aspects.(1)Research on the selection of temperature-sensing components.Design a temperature sensor array to solve the packaging and installation problems of temperature-sensitive components,so that it has the ability to resist water penetration and seawater corrosion.At the same time,the temperature measurement sensitive element should have a miniaturized size structure,which cannot affect the accuracy of the liquid level detection of the temperature measurement node.Design relevant test verification experiments of temperature-sensing components to ensure that the selected temperature-sensing components have a temperature measurement accuracy of ±0.01?,and have good linearity,high sensitivity and low noise characteristics;(2)Research on multi-sensor synchronous measurement technology.Design the hardware control circuit and software control program of the temperature measurement system to realize the synchronous measurement of the data of 50 temperature measurement nodes whose synchronization time is not more than 0.1s;(3)Research on liquid level detection technology of temperature measuring node.Through the combination of software and hardware,it can be calculated whether each temperature measurement node enters the water and the depth in the water.Under the ideal sea conditions,the liquid level detection accuracy of the temperature measurement node should reach ±0.01m;(4)Research on hardware installation and miniaturization of protective shell structure.The shell structure and the center of gravity are optimized so that it has a more stable attitude in the water,reducing the disturbance of the temperature measurement instrument on the water boundary layer temperature field at the sea-air interface under normal sea conditions,and maintaining the stability of continuous temperature measurement. |
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