Influence of short-term solar disturbances on the fair weather conduction current

Elhalel, Gal; Yair, Yoav; Nicoll, Keri; Price, Colin; Reuveni, Yuval; Harrison, Richard G.

doi:10.1051/swsc/2014022

Cited by 21 publications

(9 citation statements)

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“…They also showed that statistically J z and its fluctuations increase during substorms. The latter seems to be a more commonly observed J z reaction, also reported by Yair et al (2013), Elhalal et al (2014 at the low latitude of Mitzpe-Ramon, Israel, during magnetic storms.…”

Section: Cases Of the E Z And J Z Responses To Magnetic Substorms At High Latitudessupporting

confidence: 75%

Review of Relationships Between Solar Wind and Ground-Level Atmospheric Electricity: Case Studies from Hornsund, Spitsbergen, and Swider, Poland

Michnowski¹,

Odzimek

Клейменова

et al. 2021

Surv Geophys

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This paper reviews individual cases of the relationships between variations of solar wind parameters and variations of the DC vertical atmospheric electric field, $$E_z$$ E z , and current density, $$J_z$$ J z , measured at ground level in the Arctic, at the S. Siedlecki Polish Polar Station Hornsund, Spitsbergen (Svalbard, Norway), and at the mid-latitude S. Kalinowski Geophysical Observatory in Swider (Poland). A considerable number of events from Hornsund confirmed previous observations of regularity of effects related to the station’s position against the location of the potential bays of ionospheric convection and polar electrojets, observed in other polar locations, as well as effects of other polar cap current systems. This allowed us to conclude that the physical dependence of ground-level $$E_z$$ E z and $$J_z$$ J z on solar wind changes produce measurable effects which do not require statistical analysis to be observed. We can also expect that the dependence does exist, especially in strongly disturbed circumstances, e.g., following solar flares and Earth-directed coronal mass ejections, at middle latitudes. However, further investigations of these physical relationships by this approach are practically almost impossible since a very large number of variable parameters simultaneously affect the recorded lower atmospheric variables. In addition, results of quantitative analysis of predicted and observed effects are not satisfactory. Future research studies require more efficient ways of investigation by theoretical treatment and modelling work using existing and novel observational data besides taking advantage of scientific progress in magnetospheric physics.

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Section: Cases Of the E Z And J Z Responses To Magnetic Substorms At High Latitudessupporting

confidence: 75%

Review of Relationships Between Solar Wind and Ground-Level Atmospheric Electricity: Case Studies from Hornsund, Spitsbergen, and Swider, Poland

Michnowski¹,

Odzimek

Клейменова

et al. 2021

Surv Geophys

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“…The ionization sensor is interfaced to a standard Vaisala RS92 radiosonde via the PANDORA data acquisition system (Harrison et al, 2012). These conditions readily facilitate other atmospheric electrical measurements (vertical Efield, vertical conduction current, ELF and VLF), as described in Price and Melnikov (2004), Elhalel et al (2014) and Yaniv et al (2016). We note that these are the first such measurements ever conducted in Israel, and for that matter, in this low geomagnetic latitude range.…”

Section: Instrumentationmentioning

confidence: 99%

Balloon measurements of the vertical ionization profile over southern Israel and comparison to mid-latitude observations

Yaniv

Yair

Price

et al. 2016

Journal of Atmospheric and Solar-Terrestrial Physics

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Airborne measurements using meteorological balloons were conducted for the first time from southern Israel (geographic 30 o 35'N, 34 o 45'E geomagnetic 27 o 6'N 112 o 23'E) for measuring the vertical ionization profile during solar cycle 24. The results show the differences (increase of ~30%) in count rates as we proceed from solar maximum toward solar minimum. The observed altitude of maximum ionization (the Regener-Pfotzer maximum) was between 17-20 km, and it agrees well with results from other simultaneous measurements conducted at different latitudes (Reading, UK and Zaragoza-Barcelona, Spain). When compared with predictions of an analytical model, we find a highly significant correlation (R 2 =0.97) between our observations and the computed ionization profiles. The difference in count rates can be attributed to the height of the tropopause due to the model using a US standard atmosphere that differs from the measured atmospheric parameters above Israel.

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“…In other words, the product of conductivity (σ) and electric field ( E ) should be constant with altitude in order to fulfill Ohm's law (Haldoupis et al, ). Furthermore, changes in the atmospheric electric field and the atmospheric electric current at ground level have been detected after solar proton events (Elhalel et al, ; Nicoll & Harrison, ).…”

Section: Introductionmentioning

confidence: 99%

Solar Effects on the Atmospheric Electric Field During 2010–2015 at Low Latitudes

et al. 2018

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Solar phenomena such as flares and solar energetic particles events are potential candidates to affect the global atmospheric electric circuit. One can study these effects using measurements of the atmospheric electric field in fair weather regions. In this paper, we investigate deviations of the atmospheric electric field daily curve during solar disturbances (solar flares and solar proton events) from mean values obtained in fair weather conditions. Using the superposed epoch analysis, in order to enhance the visualization of small effects, we study the atmospheric electric field data observed between January 2010 and December 2015 at the Complejo Astronómico El Leoncito, San Juan, Argentina. The results show no deviation of the atmospheric electric field after solar flares, and an increase of about 10 V/m after solar proton events. The last result suggests possible ionization effects above thunderstorm in disturbed weather regions, which alters the global atmospheric electric circuit. On the other hand, we analyze the variation of the atmospheric electric field during a ground level enhancement on 17 May 2012, which was capable to produce changes on the surface electric field.

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Influence of short-term solar disturbances on the fair weather conduction current

Cited by 21 publications

References 20 publications

Review of Relationships Between Solar Wind and Ground-Level Atmospheric Electricity: Case Studies from Hornsund, Spitsbergen, and Swider, Poland

Review of Relationships Between Solar Wind and Ground-Level Atmospheric Electricity: Case Studies from Hornsund, Spitsbergen, and Swider, Poland

Balloon measurements of the vertical ionization profile over southern Israel and comparison to mid-latitude observations

Solar Effects on the Atmospheric Electric Field During 2010–2015 at Low Latitudes

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