星载太赫兹冰云探测技术发展和面临问题

Development of space borne Terahertz ice clouds measurement technology and existing technical problems

摘要:

冰云位于上对流层，在全球表面覆盖率达30%，在地球大气系统中发挥了重要作用。但由于一些技术因素限制，目前并没有进行足够的观测。太赫兹波波长接近冰云中典型的冰晶粒子尺寸，星载太赫兹辐射探测仪观测冰云具有独特的优势，目前得到了极大关注。基于国内外相关研究，首先阐述了冰云探测的重要性及已有卫星探测手段的不足之处，然后介绍了太赫兹冰云探测技术国内外发展情况，在此基础上分析和讨论了我国太赫兹冰云探测技术发展将面临的问题，为未来技术发展提供参考。

Abstract:

The ice clouds locate in the upper troposphere and regularly cover about 30% of the globe. They play an important role in the earth atmosphere system but are poorly measured currently due to some technological reasons. With wavelengths in the order of the size of typical ice cloud particles and therefore being sensitive to ice clouds, the terahertz region presents a unique window for the observation of ice clouds, thus space borne terahertz ice clouds measurement technology has drawn special attentions. In this paper, the roles of the ice clouds in the earth atmosphere system are illustrated and the disadvantages of current potential satellite measurements are summarized firstly; then the development of the terahertz ice clouds measurement technology is introduced; based on these, some technical problems for further development are finally analyzed and discussed.