气候变化领域集成服务门户(CCPortal): Comparison of precipitation measurements by OTT Parsivel2 and Thies LPM optical disdrometers

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DOI	10.5194/hess-22-2811-2018
	Comparison of precipitation measurements by OTT Parsivel2 and Thies LPM optical disdrometers
	Angulo-Martínez M.; Beguería S.; Latorre B.; Fernández-Raga M.
发表日期	2018
ISSN	1027-5606
起始页码	2811
结束页码	2837
卷号	22 期号:5
英文摘要	Optical disdrometers are present weather sensors with the ability of providing detailed information on precipitation such as rain intensity, radar reflectivity or kinetic energy, together with discrete information on the particle size and fall velocity distribution (PSVD) of the hydrometeors. Disdrometers constitute a step forward towards a more complete characterization of precipitation, being useful in several research fields and applications. In this article the performance of two extensively used optical disdrometers, the most recent version of OTT Parsivel2 disdrometer and Thies Clima Laser Precipitation Monitor (LPM), is evaluated. During 2 years, four collocated optical disdrometers, two Thies Clima LPM and two OTT Parsivel2, collected up to 100 000 min of data and up to 30 000 min with rain in more than 200 rainfall events, with intensities peaking at 277mmh-1 in 1 minute. The analysis of these records shows significant differences between both disdrometer types for all integrated precipitation parameters, which can be explained by differences in the raw PSVD estimated by the two sensors. Thies LPM recorded a larger number of particles than Parsivel2 and a higher proportion of small particles than OTT Parsivel2, resulting in higher rain rates and totals and differences in radar reflectivity and kinetic energy. These differences increased greatly with rainfall intensity. Possible causes of these differences, and their practical consequences, are discussed in order to help researchers and users in the choice of sensor, and at the same time pointing out limitations to be addressed in future studies. © Author(s) 2018.
语种	英语
scopus关键词	Kinetic energy; Kinetics; Particle size; Radar; Reflection; Discrete information; Precipitation measurement; Radar reflectivities; Rainfall event; Rainfall intensity; Research fields; Small particles; Weather sensors; Rain; comparative study; instrumentation; optical method; parameter estimation; performance assessment; precipitation assessment; precipitation intensity; sensor
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160030
作者单位	Angulo-Martínez, M., Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda. Montanana 1005, Zaragoza, 50059, Spain; Beguería, S., Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda. Montanana 1005, Zaragoza, 50059, Spain; Latorre, B., Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda. Montanana 1005, Zaragoza, 50059, Spain; Fernández-Raga, M., Dept. of Physics, University of León, León, Spain
推荐引用方式 GB/T 7714	Angulo-Martínez M.,Beguería S.,Latorre B.,et al. Comparison of precipitation measurements by OTT Parsivel2 and Thies LPM optical disdrometers[J],2018,22(5).
APA	Angulo-Martínez M.,Beguería S.,Latorre B.,&Fernández-Raga M..(2018).Comparison of precipitation measurements by OTT Parsivel2 and Thies LPM optical disdrometers.Hydrology and Earth System Sciences,22(5).
MLA	Angulo-Martínez M.,et al."Comparison of precipitation measurements by OTT Parsivel2 and Thies LPM optical disdrometers".Hydrology and Earth System Sciences 22.5(2018).