气候变化领域集成服务门户(CCPortal): Fireworks on weather radar and camera

CCPortal

DOI	10.1175/BAMS-D-18-0248.1
	Fireworks on weather radar and camera
	Zrnić D.S.; Zhang P.; Melnikov V.; Kabela E.
发表日期	2020
ISSN	00030007
起始页码	E90
结束页码	E108
卷号	101 期号:2
英文摘要	High-sensitivity weather radars easily detect nonmeteorological phenomena characterized by weak radar returns. Fireworks are the example presented here. To understand radar observations, an experiment was conducted in which the National Severe Storms Laboratory (NSSL)’s research (3-cm wavelength) dual-polarization radar and a video camera were located at 1 km from fireworks in Norman, Oklahoma. The fireworks from the 4 July 2017 celebration were recorded by both instruments. The experiment is described. Few bursts recorded by the camera are analyzed to obtain the height of the explosion, its maximum diameter, number of stars, and the duration of the visible image. Radar volume scans are examined to characterize the height of the observation, the maximum reflectivity, and its distribution with height. The fireworks location is close to the Terminal Doppler Weather Radar (TDWR) that operates in single polarization at a 5-cm wavelength and monitors hazardous weather over the Oklahoma City airport. A third radar with data from the event is the Weather Surveillance Radar-1988 Doppler (WSR-88D) located in Norman. It has a wavelength of 10 cm and supports technical developments at the Radar Operation Center. Reflectivity factors measured by the three radars are compared to infer the size of dominant scatterers. The polarimetric characteristics of fireworks returns are analyzed. Although these differ from those of precipitation, they are indistinguishable from insect returns. Radar observation of larger fireworks in Fort Worth, Texas, with a WSR-88D is included and compared with the observations of the smaller fireworks in Norman. We expect the detectability of explosions would be similar as of fireworks. Pinpointing locations would be useful to first responders, or air quality forecasters. A benefit of fireworks recognition in weather radar data is that it can prevent contamination of precipitation accumulations. © 2020 American Meteorological Society For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy.
语种	英语
scopus关键词	Air quality; Doppler radar; Explosives; Meteorological problems; Meteorological radar; Polarization; Reflection; Storms; Surveillance radar; Video cameras; Dual polarization radars; National severe storms laboratories; Radar observations; Single polarization; Technical development; Terminal doppler weather radars; Weather radar data; Weather surveillance radar-1988 Doppler; Radar measurement
来源期刊	Bulletin of the American Meteorological Society
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177944
作者单位	National Severe Storms Laboratory, Norman, OK, United States; Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States; Oak Ridge National Laboratory, Oak Ridge, TN, United States
推荐引用方式 GB/T 7714	Zrnić D.S.,Zhang P.,Melnikov V.,et al. Fireworks on weather radar and camera[J],2020,101(2).
APA	Zrnić D.S.,Zhang P.,Melnikov V.,&Kabela E..(2020).Fireworks on weather radar and camera.Bulletin of the American Meteorological Society,101(2).
MLA	Zrnić D.S.,et al."Fireworks on weather radar and camera".Bulletin of the American Meteorological Society 101.2(2020).