气候变化领域集成服务门户(CCPortal): Comparative measurement of rainfall with a precipitation micro-physical characteristics sensor; a 2D video disdrometer; an OTT PARSIVEL disdrometer; and a rain gauge

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DOI	10.1016/j.atmosres.2019.06.020
	Comparative measurement of rainfall with a precipitation micro-physical characteristics sensor; a 2D video disdrometer; an OTT PARSIVEL disdrometer; and a rain gauge
	Liu X.; He B.; Zhao S.; Hu S.; Liu L.
发表日期	2019
ISSN	0169-8095
起始页码	100
结束页码	114
卷号	229
英文摘要	In Nanjing, China, a comparative measurement of rainfall by using a self-developed Precipitation Microphysical Characteristics Sensor (PMCS), a 2D Video Disdrometer (2DVD), a OTT PARSIVEL Disdrometer (OTT), and a tipping bucket rain gauge (Gauge) is presented to quantitatively evaluate their performances. The rain rate, rainfall duration, rainfall accumulation, raindrop size distribution (DSD), Z-R relationship, μ-λ relationship, fall velocity, axis ratio, and their features are compared and discussed in detail. The PMCS, 2DVD, OTT and Gauge can measure the rainfall accumulation accurately, but the Gauge tends to underestimate the rainfall duration and rain rate significantly. The optical-based PMCS, 2DVD, and OTT can monitor rainfall with a higher precision in a wide range of rain rate. The PMCS, 2DVD, and OTT agree well between 0.8 and 3.25 mm. The PMCS is able to measure raindrops of at least 0.1 mm, and both the 2DVD and OTT can measure more large raindrops (> 3.5 mm). For fall velocity and axis ratio, both the PMCS and 2DVD basically agree well with the Atlas relationship, and the PMCS can describe the fall velocity with a lower deviation. It is interesting that 2.5% raindrops larger than 3 mm are found to be spherical, it may be attributed to the periodic oscillation of raindrops. This study reveals that a combination of the PMCS and 2DVD can compensate for their shortcomings and promote the DSD measurement in the entire drop size spectrum, and it's highly suggested that the reliability of DSD measurements needs careful cross-assessment after quality control. © 2019
英文关键词	Axis ratio; Comparative measurement; Disdrometer; Fall velocity; Raindrop size distribution
语种	英语
scopus关键词	Drops; Quality control; Rain gages; Size distribution; Velocity; Axis ratio; Comparative measurements; Disdrometers; Fall velocities; Raindrop size distribution; Rain; comparative study; precipitation assessment; precipitation intensity; raindrop; raingauge; size distribution; two-dimensional modeling; China; Jiangsu; Nanjing [Jiangsu]
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162148
作者单位	College of Meteorology and Oceanography, National University of Defense Technology, Nanjing, China
推荐引用方式 GB/T 7714	Liu X.,He B.,Zhao S.,et al. Comparative measurement of rainfall with a precipitation micro-physical characteristics sensor; a 2D video disdrometer; an OTT PARSIVEL disdrometer; and a rain gauge[J],2019,229.
APA	Liu X.,He B.,Zhao S.,Hu S.,&Liu L..(2019).Comparative measurement of rainfall with a precipitation micro-physical characteristics sensor; a 2D video disdrometer; an OTT PARSIVEL disdrometer; and a rain gauge.Atmospheric Research,229.
MLA	Liu X.,et al."Comparative measurement of rainfall with a precipitation micro-physical characteristics sensor; a 2D video disdrometer; an OTT PARSIVEL disdrometer; and a rain gauge".Atmospheric Research 229(2019).