利用葵花8气象卫星监测上冲云顶的方法及检验

上冲云顶是卷云砧上的穹顶状突起,往往伴有强烈的天气变化,给航空运行安全带来影响.利用天气雷达来探测强对流虽然灵敏度高,但探测范围有限.卫星可以大范围长时间不受地形的限制探测强对流.利用葵花8静止气象卫星通过水汽通道和红外通道双通道差值法、IRW-texture法以及局部最小值法这3种方法来识别上冲云顶.实验结果表明局部最小值法相较其他两种方法能够更加准确客观地识别上冲云顶.

The Use of Meteorological Satellite to Identify Uprush Cloud Top

The uprush cloud top is a dome like protuberance on the rolling stock, which often has strong weather changes, and affects the aviation operation safety. Although the sensitivity of detecting strong convection by weather radar is high, the detection range is limited, and the satellite can detect strong convection in a large range for a long time without the limitation of terrain.Himawari-8 geostationary meteorological satellite can identify the uprush cloud top by the method of water vapor channel and infrared channel difference method, IRW-texture method and local minimum method. The experimental results show that the local minimum method can identify the upthrust cloud top more accurately and objectively than the other two methods.