气候变化领域集成服务门户(CCPortal): Observation of Terrestrial Gamma-Ray Flashes at Mid Latitude

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DOI	10.1029/2020JD034432
	Observation of Terrestrial Gamma-Ray Flashes at Mid Latitude
	Maiorana C.; Marisaldi M.; Füllekrug M.; Soula S.; Lapierre J.; Mezentsev A.; Skeie C.A.; Heumesser M.; Chanrion O.; Østgaard N.; Neubert T.; Reglero V.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:18
英文摘要	We present a sample of Terrestrial Gamma-ray Flashes (TGFs) observed at mid latitudes by the Atmosphere Space Interaction Monitor (ASIM). The events were detected between June 2018 and August 2020 in the latitude bands between 35° and 51° in both hemispheres, which we hereafter refer to as “mid latitudes.” The sample includes the first observations above (Formula presented.) and consists of 14 events clustered in four geographical regions: north-west Atlantic and eastern USA; Mediterranean Sea; the ocean around South Africa; and north-eastern China and Siberia. We examine the characteristics of each event, both standalone and in the context of the global ASIM TGF data set, and we find that our sample is consistent with the global population concerning the number of counts, but shows significantly shorter durations. We analyze the meteorological context and the general evolution of the parent storms and we show that the storms are not extreme in terms of total duration and extension. Whenever possible, we also include the radio sferics and the peak current of the parent stroke. Finally, we present an estimation of the TGF occurrence rate at mid latitudes, based on ASIM's exposure, the local flash rate and tropopause altitude, and we show that it is outside but very close to two standard deviation from the rate of production at tropical latitudes, corrected by the higher atmospheric absorption of higher latitudes. This means that atmospheric absorption plays a major role in the detection of TGFs at mid latitudes, but we cannot rule out other factors. © 2021. The Authors.
英文关键词	ASIM instrument; atmospheric electricity; high-energy atmospheric physics; high-energy radiation; lightning; Terrestrial Gamma-ray Flashes
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236993
作者单位	Birkeland Centre for Space Science, Department of Physics and Technology, University of Bergen, Bergen, Norway; INAF-OAS Bologna, Bologna, Italy; Department of Electronic and Electrical Engineering, Centre for Space, Atmospheric and Oceanic Science, University of Bath, Bath, United Kingdom; Laboratory of Aerology, University of Toulouse/CNRS, Toulouse, France; Earth Networks, Germantown, MD, United States; National Space Institute, Technical University of Denmark (DTU Space), Kongens Lyngby, Denmark; Image Processing Laboratory, University of Valencia, Valencia, Spain
推荐引用方式 GB/T 7714	Maiorana C.,Marisaldi M.,Füllekrug M.,et al. Observation of Terrestrial Gamma-Ray Flashes at Mid Latitude[J],2021,126(18).
APA	Maiorana C..,Marisaldi M..,Füllekrug M..,Soula S..,Lapierre J..,...&Reglero V..(2021).Observation of Terrestrial Gamma-Ray Flashes at Mid Latitude.Journal of Geophysical Research: Atmospheres,126(18).
MLA	Maiorana C.,et al."Observation of Terrestrial Gamma-Ray Flashes at Mid Latitude".Journal of Geophysical Research: Atmospheres 126.18(2021).