摘要
探测距海面几米高以下的温、湿和风等气象要素的梯度变化，以获取梯度廓线及贴水层大气的动量、热量和乱流等通量传递系数，是研究小尺度海气相互作用的必要手段。由于海上工作条件不同于陆地，进行海上大气梯度探测是比较困难的。为了适应我国海气相互作用研究的需要，我们研制成功了一种采用小型浮标系统，
The principle, method, application and accuracy of an instrument which measures gradients of temperature, humidity and wind speed above sea surface are described.This instrument can be used to measure gradients of the above mentioned quantities within 5 metres above sea surface at 4 different heights.The sensor detecting temperature and humidity is a pt resistor ( Ro = 500 ) , and the sensor detecting wind speed is a cup anemometer., The siguals of temperature, humidity and wind speed are convered by an A-D circuit and digitally digsplayed. These sensors are set on a buoy,the yan of which will be less than 5° under Beaufor wind Scale 5. The signals are transmitted by a callc of 20 cores to a digital display system on board.The accuracies of measurement:±0.05％( for temp )±3% ( for humidity )±0, 2m/sec ( for wind speed ) .
