Further evidence for superterminal raindrops
Further evidence for superterminal raindrops
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DOI：
10.1002/2014gl061397
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发表时间：
2014-10
影响因子：
5.2
通讯作者：
M. L. Larsen;A. Kostinski;A. R. Jameson
中科院分区：
文献类型：
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作者：
M. L. Larsen;A. Kostinski;A. R. Jameson
利用光学测量仪网络（包括激光降水监测仪和二维视频测量仪）来确定最近报告的“超终端”雨滴是否是在仪器上发生的雨滴破裂的虚假结果。结果明确表明，小（小于1毫米）尺寸的超末端雨滴无处不在，在一个扩展的区域内是可测量的，并且出现在每一次调查的降雨事件中。没有证据表明超末端液滴是由于液滴受到测量仪器的冲击而破裂的结果；因此，如果超级终端雨滴是雨滴破碎的结果，那么在本研究测量的所有降雨事件中，这种破碎都发生在环境大气中。无处不在的小液滴超级终端液滴提出了有关雨积累估计、液滴大小分布估计和侵蚀特性的自然问题。
A network of optical disdrometers (including laser precipitation monitors and a two‐dimensional video disdrometer) was utilized to determine whether the recent reports of “superterminal” raindrops were spurious results of drop breakup occurring on instrumentation. Results unequivocally show that superterminal raindrops at small (less than 1 mm) sizes are ubiquitous, are measurable over an extended area, and appear in every rain event investigated. No evidence was found to suggest that superterminal drops are the result of drop breakup due to impact with the measurement instrument; thus, if the superterminal drops are the result of drop fragmentation, this fragmentation happens in the ambient atmosphere during all rain events measured in this study. The ubiquity of superterminal drops at small drop sizes raises natural questions regarding rain accumulation estimations, estimates of drop size distributions, and erosion characterization.