气候变化领域集成服务门户(CCPortal): The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere

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DOI	10.1029/2021JD034978
	The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere
	Kocifaj M.; Kómar L.; Kundracik F.; Markoš P.; Petržala J.; Videen G.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:17
英文摘要	Microwave (MW) attenuation plays a critical role in constructing communication networks. It also can be a useful tool in the meteorological and optical communities for radar and microwave imaging applications. Because most atmospheric constituents (large hydrometeors being an exception) are very small compared to MW wavelengths, data analysis is typically performed using conventional Rayleigh theory; however, some anomalous observations have proven difficult to explain. We present the results of the first systematic numerical computations over a wide range of aerosol properties. We demonstrate that it is possible to perform mass computations of aerosol loading, which is an important climate parameter. We show that discrepancies found between theoretical predictions and observations can be attributed to the effect of the expected charge acquired by the dust particles through contact electrification occurring in dust storms. While frequencies below 10 GHz normally allow for long-distance signal transmission, the charge-induced resonances in particles can preferentially amplify the low-frequency MW attenuation by a factor of 10 or more, depending on their surface electric potential. In addition, we find electrically charged particles dispersed in a local atmosphere as a potential tool for the controlled manipulation of MW attenuation. © 2021. The Authors.
英文关键词	aerosols; charge-induced resonance; electrically charged particles; manipulation of MW attenuation; microwave attenuation
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/237031
作者单位	ICA, Slovak Academy of Sciences, Bratislava, Slovakia; Faculty of Mathematics, Physics, and Informatics, Comenius University, Bratislava, Slovakia; US Army Research Laboratory, Adelphi, MD, United States; Space Science Institute, Boulder, CO, United States
推荐引用方式 GB/T 7714	Kocifaj M.,Kómar L.,Kundracik F.,et al. The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere[J],2021,126(17).
APA	Kocifaj M.,Kómar L.,Kundracik F.,Markoš P.,Petržala J.,&Videen G..(2021).The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere.Journal of Geophysical Research: Atmospheres,126(17).
MLA	Kocifaj M.,et al."The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere".Journal of Geophysical Research: Atmospheres 126.17(2021).