Measurements of Atmospheric Electricity Aloft

Nicoll, Keri

doi:10.1007/s10712-012-9188-9

Cited by 59 publications

(53 citation statements)

References 233 publications

(300 reference statements)

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“…2.2) in dust storms and to untangle the influences of environmental Nicoll, 2012;Stolzenburg and Marshall, 95 1994; Zhou and Tinsley, 2007), we estimated the multi-meter averaged space charge density based on Gauss's law, in which the mean space charge density is proportional to the divergence of the E-fields, as described in detail in Sect. 2.2.…”

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confidence: 99%

“…nn this study, as in the method investigating the electrical effects of thunderstorms, clouds, and aerosol layers in the atmosphere (e.g., MacGorman and Rust, Nicoll, 2012;Stolzenburg and Marshall, 1994;Zhou and Tinsley, 2007), the mean space charge density, which is the quantity of charge per unit volume, was determined indirectly. According to Gauss's law, the total space charge density is directly proportional 295 to the divergence of the E-fields.…”

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confidence: 99%

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Quantifying the large-scale electrification equilibrium effects in dust storms using field observations at Qingtu Lake Observatory

Zhang¹,

Zheng²

2018

Preprint

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Dust/sand electrification, which is a ubiquitous phenomenon in dust events, has a potentially dramatic effect on dust/sand lifting and transport processes. However, the 15 effect of such electrification is still largely unclear, mainly due to its complexity and sparse observations. Here, we conducted an extensive observational analysis involving mild and severe dust storms with minimum visibility, ranging from ~0.09 to 0.93 km, to assess the electrical properties of airborne dust particles in dust storms. The space charge density has been estimated indirectly based on Gauss's law. Using the wavelet coherence analysis 20 that is a method for evaluating the correlations between two non-stationary time series in the time-frequency domain, we found that the space charge density and dust concentration were significantly correlated over the 10 min timescales that is on the order of the typical integral time scale of atmospheric turbulence. We further presented a simple linear regression (SLR) model to quantify such large timescale correlations and 25 found that there was a significant linear relationship between space charge density and dust concentration at given ambient temperature and relative humidity (RH), suggesting that the estimated mean charge-to-mass ratio of dust particles was expected to remain constant (termed as the equilibrium value * ). nn addition, the influences of ambient temperature and RH on * were evaluated by a multiple linear regression (MLR) model,

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confidence: 99%

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confidence: 99%

Quantifying the large-scale electrification equilibrium effects in dust storms using field observations at Qingtu Lake Observatory

Zhang¹,

Zheng²

2018

Preprint

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“…Investigations using balloon measurements from the late 1800s showed a variation in potential with atmospheric height (Nicoll 2012), with the upper conducting region being about 250kV positive with respect to the lower conducting region. The finite conductivity of the intermediate atmosphere between these charged regions allows a vertical current to flow.…”

Section: The Wilson Global Circuitmentioning

confidence: 99%

Atmospheric Electrification in Dusty, Reactive Gases in the Solar System and Beyond

et al. 2016

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Detailed observations of the solar system planets reveal a wide variety of local atmospheric conditions. Astronomical observations have revealed a variety of extrasolar planets none of which resembles any of the solar system planets in full. Instead, the most massive amongst the extrasolar planets, the gas giants, appear very similar to the class of (young) brown dwarfs which are amongst the oldest objects in the Universe. Despite this diversity, solar system planets, extrasolar planets and brown dwarfs have broadly similar global temperatures between 300 and 2500 K. In consequence, clouds of different chemical species form in their atmospheres. While the details of these clouds differ, the fundamental physical processes are the same. Further to this, all these objects were observed to produce radio and X-ray emissions. While both kinds of radiation are well studied on Earth and to a lesser extent on the solar system planets, the occurrence of emissions that potentially originate from accelerated electrons on brown dwarfs, extrasolar planets and protoplanetary disks is not well understood yet. This paper offers an interdisciplinary view on electrification processes and their feedback on their hosting environment in meteorology, volcanology, planetology and research on extrasolar planets and planet formation.

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“…Cosmic rays produce ion clusters in the lower atmosphere which modify the vertical current and cause accumulation of space charges on the upper and lower edges of cloud (Tinsley, 2000;Siingh, 2008;Nicoll and Harrison, 2010;Singh et al, 2011;Nicoll, 2012). Space charges could influence microphysical processes such as droplet-droplet collision (Khain et al, 2004), droplet-particle collision (Tripathi and Harrison, 2002), droplet formation (Harrison and Ambaum, 2008), etc.…”

Section: Cosmic Rays and Lightning Dischargementioning

confidence: 99%