Corona ion induced atmospheric potential gradient perturbations near high voltage power lines

Matthews, James; Ward, Jonathan; Keitch, PA; Henshaw, D.L.

doi:10.1016/j.atmosenv.2010.09.007

Cited by 21 publications

(19 citation statements)

References 29 publications

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“…Nevertheless, earlier studies have shown, for example, that significant ion production can occur in the vicinity of highvoltage power lines (Eisele, 1989a, b;Matthews et al, 2010). Therefore, in other environments with a strong local source of ions, it is not clear whether CIMS measurements could potentially be affected more strongly.…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

Effect of ions on the measurement of sulfuric acid in the CLOUD experiment at CERN

et al. 2014

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Abstract. Ternary aerosol nucleation experiments were conducted in the CLOUD chamber at CERN in order to investigate the influence of ions on new particle formation. Neutral and ion-induced nucleation experiments, i.e. without and with the presence of ions, respectively, were carried out under precisely controlled conditions. The sulfuric acid concentration was measured with a chemical ionisation mass spectrometer (CIMS) during the new particle formation experiments. The added ternary trace gases were ammonia (NH 3 ), dimethylamine (DMA, C 2 H 7 N) or oxidised products of pinanediol (PD, C 10 H 18 O 2 ). When pinanediol was introduced into the chamber, an increase in the mass spectrometric signal used to determine the sulfuric acid concentration (m/z 97, i.e. HSO − 4 ) was observed due to ions from the CLOUD chamber. The enhancement was only observed during ion-induced nucleation measurements by using either galactic cosmic rays (GCRs) or the proton synchrotron (PS) pion beam for the ion generation, respectively. The ion effect typically involved an increase in the apparent sulfuric acid concentration by a factor of ∼ 2 to 3 and was qualitatively verified by the ion measurements with an atmosphericpressure interface-time of flight (APi-TOF) mass spectrometer. By applying a high-voltage (HV) clearing field inside the CLOUD chamber, the ion effect on the CIMS measurement was completely eliminated since, under these conditions, small ions are swept from the chamber in about 1 s. In order to exclude the ion effect and to provide corrected sulfuric acid concentrations during the GCR and PS beam nucleation experiments, a parameterisation was derived that utilises the trace gas concentrations and the UV light intensity as input parameters. Atmospheric sulfuric acid measurements with a CIMS showed an insignificant ion effect.

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Section: Atmospheric Implicationsmentioning

confidence: 99%

Effect of ions on the measurement of sulfuric acid in the CLOUD experiment at CERN

et al. 2014

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“…It is worth mentioning here that Eq. 3is a simplification because it neglects the positive to negative ion concentration imbalance; which is crucial in highly perturbed regions where space charges form (Matthews et al, 2010). Nevertheless, the present formulation assumes a quasi-equilibrium state perturbed by the presence of aerosols.…”

Section: Formulationmentioning

confidence: 99%

“…In a basic view, PG is a result of the action of the Global Electric Circuit (Odzimek, Lester, & Kubicki, 2010;Williams & Mareev, 2014;Wilson, 1920) and the local joint effect of ions, aerosols and water droplets (Harrison, 2012). Ions act as charge carriers in the atmosphere and are the major contributors to electric conduction (Matthews, Ward, Keitch, & Henshaw, 2010;Wright, Buckley, Matthews, Shallcross, & Henshaw, 2014). In the lower troposphere the most representative negative ions are O 2 À , CO 3 À , NO 3 À , HSO 4 À while the positive ones are: Harrison & Carslaw, 2003).…”

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confidence: 99%

Aerosol hygroscopic growth and the dependence of atmospheric electric field measurements with relative humidity

Silva

Conceição

Wright³

et al. 2015

Journal of Aerosol Science

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A simple formulation is developed to model the influence of the aerosol hygroscopic growth in the dependence of the atmospheric electric field measurements with relative humidity. The formulation uses the Petters and Kreidenweis's model for the hygroscopic growth factor of aerosols with relative humidity and assumes that the ion-aerosol attachment coefficient is linearly proportional to the particle radius according to Gunn's calculation. A formula which describes the atmospheric electric field increase with relative humidity in the regime expected for the aerosols to grow hygroscopically is found; between 60% and 90%. It also relates the microphysical parameter of aerosol hygroscopicity, κ, with the macrophysical measure of the atmospheric electric field. Historical data of atmospheric electric field and relative humidity recorded in the meteorological station of Portela (near Lisbon airport, Portugal) are used to fit the model. The electrical measurements were done with a Benndorf electrograph and the 1980-1990 period was considered. Due to the high pollution levels the atmospheric electric field measurements were divided in four wind sectors, NW, NE, SE, and SW. The sector least affected by pollutant aerosols, NW, was used in the fitting and the goodness found is r 2 $ 0.97, the aerosol concentration number is $ 3280 cm À 3 and the hygroscopic growth parameter κ$0.094. These are very reasonable values consistent with an urban environment, which typically has high aerosol number concentration with small hygroscopicity. The limitations of the model are presented throughout the sections.

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“…Generally, the corona phenomenon which appears on the high voltage over-head transmission lines generates electromagnetic interference, power loss, as well as ozone and audible noise, which are harmful to the electric power transmission system and environment [1][2][3]. While, in the field of electroactive polymers (EAPs), the corona discharge is a useful technique that can inject charges into the films [4][5].…”

Section: Introductionmentioning

confidence: 99%

Magnetoelectric phenomena of insulator polymers after corona poling: Procedure and experiments

Zhang

Belouadah

Lebrun

et al. 2014

Sensors and Actuators A: Physical

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Corona ion induced atmospheric potential gradient perturbations near high voltage power lines

Cited by 21 publications

References 29 publications

Effect of ions on the measurement of sulfuric acid in the CLOUD experiment at CERN

Effect of ions on the measurement of sulfuric acid in the CLOUD experiment at CERN

Aerosol hygroscopic growth and the dependence of atmospheric electric field measurements with relative humidity

Magnetoelectric phenomena of insulator polymers after corona poling: Procedure and experiments

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