Atmospheric Electric Field Data Logger System

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Muhammad Abu Bakar Sidik ◽  
Nuru Saniyyati Che Mohd Shukri ◽  
Hussein Ahmad ◽  
Zolkafle Buntat ◽  
Nouruddeen Bashir ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Virtual Instrument ◽  
Field Data ◽  
Daily Basis ◽  
Atmospheric Electric Field ◽  
Navigation Systems ◽  
Data Logging ◽  
Data Logger ◽  
Function Generator

Weather can  be unpredictable as there are a lot of uncertainties in predicting thunderstorms. Most of our navigation systems, including those on air, land and water, as well as broadcasting systems, are directly affected by the weather on a daily basis. The inconsistent and unreliable nature of storms brings out the importance of research in atmospheric electric field data logging systems. This paper presents a study to develop a virtual instrument with the capability to analyse and store the magnitude (data) of atmospheric electric fields. The study was carried out using a LabVIEW virtual instrument and tested using data acquisition (DAQ) and a function generator. The developed virtual instrument consists of waveform chart, tabulated data, and histogram for real time observation. Moreover, it has feature to save and recall data for further analysis.

Ionospheric Irregularities During Disturbed Geomagnetic Conditions Over Argentinian EIA Region

2021 ◽  
Author(s):  
Gilda de Lourdes González
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Geomagnetic Storms ◽  
Ionospheric Irregularities ◽  
The Other ◽  
Scintillation Index ◽  
Navigation Systems ◽  
Radio Communication ◽  
Spread F ◽  
Bottom Side

Abstract Ionospheric irregularities can severely degrade radio communication and navigation systems. Geomagnetic storms may affect the generation of these irregularities in a way that is not yet fully understood. To improve the forecasting of this phenomenon, we need to study the ionosphere in different regions of the world, and in particular in the equatorial ionization anomaly (EIA) where irregularities are usually more intense. This study analyses the effect of geomagnetic storms on ionospheric irregularities. We examined the occurrence of irregularities at the southern crest of the EIA in Argentina (Tucumán, 26.9°S, 294.6°E, dip latitude 15.5° S) during three intense and one moderate geomagnetic storm of different solar sources, between 2015 and 2018. We used data from an ionosonde, a Global Positioning System (GPS) receiver and magnetometers. Ionogram spread-F, the F-layer bottom side (h'F), the critical frequency of the F2-layer (foF2), the rate of TEC index (ROTI) and the S4 scintillation index were analysed. The data show irregularities were present as range spread-F and moderate TEC fluctuations in one storm: 27 May 2017 (a coronal mass ejection CME-driven storm occurred on local winter), and were absent in the other events. We suggest that eastward disturbance dynamo electric field and over-shielding prompt penetration electric fields may create favourable conditions for developing these irregularities. Whereas, westward storm time electric fields might inhibit the growth of irregularities during the other storms considered. During co-rotating interaction region CIR-driven storms, the westward disturbance dynamo electric field may be associated with the non-occurrence of irregularities.

Detecting embedded convection based on the surface atmospheric electric field data

2018 ◽  
Author(s):  
Michael Kabanov ◽  
Sergei Kapustin ◽  
Alexey Kobzev ◽  
Petr Nagorskiy ◽  
Alexey Tel’minov ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Data ◽  
Atmospheric Electric Field

scholarly journals Polar and Cluster observations of a dayside inverted-V during conjunction

2007 ◽  
Vol 25 (2) ◽  
pp. 543-555 ◽  
Author(s):  
J. D. Menietti ◽  
R. A. Frahm ◽  
A. Korth ◽  
F. S. Mozer ◽  
Y. Khotyaintsev
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Electric Field ◽  
Electric Fields ◽  
Magnetic Field Line ◽  
Large Amplitude ◽  
Field Data ◽  
Plasma Waves ◽  
Magnetic Field Data ◽  
The Magnetic Field

Abstract. We investigate particle and fields data during a conjunction of the Polar and Cluster spacecraft. This conjunction occurs near the dayside cusp boundary layer when a dayside inverted-V was observed in the particle data of both satellites. Electron, ion, electric field, and magnetic field data from each satellite confirm that the dayside inverted-V (DSIV) structure is present at the location of both satellites and the electric fields persist from the altitude of the Polar (lower) spacecraft to the altitude of the Cluster spacecraft. We observe accelerated, precipitating electrons and upward ions along the magnetic field. In addition, large amplitude electric fields perpendicular to the ambient magnetic field seen by Polar and by Cluster suggest significant parallel electric fields associated with these events. For similar DSIV events observed by the Polar spacecraft, plasma waves (identified as possible Alfvén waves) have been observed to propagate in both directions along the magnetic field line. Future conjunctions will be necessary to confirm that DSIVs are associated with reconnection sites.

scholarly journals First results of electric field and density observations by Cluster EFW based on initial months of operation

2001 ◽  
Vol 19 (10/12) ◽  
pp. 1219-1240 ◽  
Author(s):  
G. Gustafsson ◽  
M. André ◽  
T. Carozzi ◽  
A. I. Eriksson ◽  
C.-G. Fälthammar ◽  
...  
Keyword(s):  
Solar Wind ◽  
Electric Field ◽  
Electric Fields ◽  
Field Data ◽  
Space Plasma ◽  
Space Plasma Physics ◽  
First Results ◽  
High Coherence ◽  
Very High

Abstract. Highlights are presented from studies of the electric field data from various regions along the Cluster orbit. They all point towards a very high coherence for phenomena recorded on four spacecraft that are separated by a few hundred kilometers for structures over the whole range of apparent frequencies from 1 mHz to 9 kHz. This presents completely new opportunities to study spatial-temporal plasma phenomena from the magnetosphere out to the solar wind. A new probe environment was constructed for the CLUSTER electric field experiment that now produces data of unprecedented quality. Determination of plasma flow in the solar wind is an example of the capability of the instrument.Key words. Magnetospheric physics (electric fields) – Space plasma physics (electrostatic structures; turbulence)

Electrohydrodynamic and Shear-Stress Interfacial Instability of Two Streaming Viscous Liquid Inside a Microchannel for Normal Electric Fields

2011 ◽  
Author(s):  
Haiwang Li ◽  
Teck Neng Wong ◽  
Nam-Trung Nguyen
Keyword(s):  
Shear Stress ◽  
Electric Field ◽  
Electric Fields ◽  
Fluid Dynamic ◽  
Immiscible Fluids ◽  
Interfacial Instability ◽  
Electrical Mobility ◽  
Layer System ◽  
High Voltage Power Supply ◽  
Function Generator

The electrohydrodynamic and shear-stress instability of the interface between two viscous fluids with different electrical properties under constant flowrates in microchannel is analytically and experimentally investigated. In analytical model, the two-layer system is subjected to an electric field normal to the interface between the two fluids; the electric field, surface charge and fluid dynamic are coupled only at the interface. In the experiments, two immiscible fluids, aqueous NaHCO3 (high electrical mobility fluid) and Poly (dimethylsiloxane) (low electrical mobility fluid) are pushed into the PMMA microchannel using syringes and syringe pump. The normal electric field is added to the aqueous NaHCO3 using high voltage power supply; the perturbation electric field are added using a function generator and a power amplifier. The results showed that the electric fields can induce the instability of fluids in microchannel; the increasing of viscosity and flowrates has a stabilizing effect to the flow; but increasing of thickness has a destabilizing effect to the flow. The results also show that the analytical solution has a good agreement with the experimental results.

Electric Field Sensor for Small Unmanned Aerial Vehicles

2020 ◽  
Author(s):  
Stefan Chindea ◽  
Keri Nicoll
Keyword(s):  
Electric Field ◽  
Unmanned Aerial Vehicles ◽  
Electric Fields ◽  
Atmospheric Electricity ◽  
Data Logging ◽  
Electric Field Sensor ◽  
Aerial Vehicles ◽  
Small Uav ◽  
Field Sensor ◽  
Sensor Package

<p>Characterisation of the vertical variation in the atmospheric electric field has been made for many decades, but normally in an ad-hoc manner, using instrumented weather balloons or manned aircraft, which are expensive to fly.  Such vertical measurements are required to measure the ionospheric potential and to characterise electric fields with clouds (both thunderstorm and non thunderstorm clouds) to understand the charging processes within them. </p><p>Advances in electronics and battery technology has meant that small Unmanned Aerial Vehicles (UAVs) have now become available as a new science platform. These measurement platforms address many of the problems associated with manned aircraft while allowing in-situ measurements with an increased level of control and repeatability when compared to weather balloons. Despite their potential advantages, one of the main challenges to using UAVs for atmospheric electricity research is the lack of small, lightweight sensors which are commercially available. To overcome this barrier, this work describes the development of a lightweight, miniaturised electric field sensor to be integrated with a small UAV (<7kg, wingspan 2m). </p><p>The sensor has been designed to allow measurements of the electric field intensities typical of non-thunderstorm low altitude (<6000 ft) clouds with a typical range of 0-2.5kV/m. It is based on the concept of an electric field mill, but with a translational shield rather than a rotating vane model. This allows the sensor to fit neatly within the wing of a small UAV, rather than the need to be mounted in the nose.  A custom designed 3D printed housing contains all elements of the sensor package, with the translational shield movement and data logging controlled by an onboard programmable microcontroller. This work will focus on the details regarding the experimental characterisation of the sensor package with a particular focus on the key influences of the integration with the airborne platform.</p>

scholarly journals Electric Mode Excitation in the Atmosphere by Magnetospheric Impulses and ULF Waves

2021 ◽  
Vol 8 ◽  
Author(s):  
V. A. Pilipenko ◽  
E. N. Fedorov ◽  
V. A. Martines-Bedenko ◽  
E. A. Bering
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Electromagnetic Waves ◽  
Atmospheric Electricity ◽  
Theoretical Estimate ◽  
Potential Gradient ◽  
Atmospheric Electric Field ◽  
Iri Model ◽  
Excitation Rate ◽  
Magnetospheric Field

Variations of vertical atmospheric electric field Ez have been attributed mainly to meteorological processes. On the other hand, the theory of electromagnetic waves in the atmosphere, between the bottom ionosphere and earth’s surface, predicts two modes, magnetic H (TE) and electric E (TH) modes, where the E-mode has a vertical electric field component, Ez. Past attempts to find signatures of ULF (periods from fractions to tens of minutes) disturbances in Ez gave contradictory results. Recently, study of ULF disturbances of atmospheric electric field became feasible thanks to project GLOCAEM, which united stations with 1 sec measurements of potential gradient. These data enable us to address the long-standing problem of the coupling between atmospheric electricity and space weather disturbances at ULF time scales. Also, we have reexamined results of earlier balloon-born electric field and ground magnetic field measurements in Antarctica. Transmission of storm sudden commencement (SSC) impulses to lower latitudes was often interpreted as excitation of the electric TH0 mode, instantly propagating along the ionosphere–ground waveguide. According to this theoretical estimate, even a weak magnetic signature of the E-mode ∼1 nT must be accompanied by a burst of Ez well exceeding the atmospheric potential gradient. We have examined simultaneous records of magnetometers and electric field-mills during >50 SSC events in 2007–2019 in search for signatures of E-mode. However, the observed Ez disturbance never exceeded background fluctuations ∼10 V/m, much less than expected for the TH0 mode. We constructed a model of the electromagnetic ULF response to an oscillating magnetospheric field-aligned current incident onto the realistic ionosphere and atmosphere. The model is based on numerical solution of the full-wave equations in the atmospheric-ionospheric collisional plasma, using parameters that were reconstructed using the IRI model. We have calculated the vertical and horizontal distributions of magnetic and electric fields of both H- and E-modes excited by magnetospheric field-aligned currents. The model predicts that the excitation rate of the E-mode by magnetospheric disturbances is low, so only a weak Ez response with a magnitude of ∼several V/m will be produced by ∼100 nT geomagnetic disturbance. However, at balloon heights (∼30 km), electric field of the E-mode becomes dominating. Predicted amplitudes of horizontal electric field in the atmosphere induced by Pc5 pulsations and travelling convection vortices, about tens of mV/m, are in good agreement with balloon electric field and ground magnetometer observations.

Lightning And Atmospheric Electric Field Data Acquisition Site: Preliminary Data And Possibilities

1999 ◽  
Author(s):  
M.M.F. Saba ◽  
O. Pinto Jr. ◽  
I.R.C.A. Pinto ◽  
E.C. Ferraz ◽  
F. Miranda ◽  
...  
Keyword(s):  
Electric Field ◽  
Data Acquisition ◽  
Preliminary Data ◽  
Field Data ◽  
Atmospheric Electric Field

scholarly journals Strong variations of gamma-ray and atmospheric electric field during various meteorological conditions by observations in Yakutsk and Tiksi

2018 ◽  
Vol 62 ◽  
pp. 01013 ◽  
Author(s):  
Anatoliy Toropov ◽  
Sergey Starodubtzev ◽  
Vladimir Kozlov
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Weather Conditions ◽  
Heavy Precipitation ◽  
Atmospheric Electric Field ◽  
Strong Increase ◽  
Gamma Background ◽  
Academy Of Sciences

The results of a study strong increase in gamma-ray background in the surface layer of the atmosphere during precipitation and near thunderstorms in Yakutsk (based on the Cosmic Ray Spectrometer of the Institute of Cosmic Rays of the Siberian Branch of the Russian Academy of Sciences) and Tiksi (Polar Geospace Observatory of the IKFIA SB RAS) are present in this paper. Scintillation detectors based on NaI (Tl) crystals with a size of 63mm x 63mm are used to register gammaray . The range of measured energies is 20-1900 keV. Detectors are closed from the sides and from below with lead (5 cm) and placed in thermoboxes having a glass window. Both of the detectors are located on the roof of buildings in Yakutsk and Tiksi. Also, synchronous registration of variations of the atmospheric electric field, (electrostatic fluxmeters Boltek EFM-100) and main meteorological parameters of the atmosphere (ultrasonic weather station AMK-04). An explicit relationship was found between the increase in the background gamma-ray and heavy rainfall. The energy spectra of the gamma background are obtained under “good” weather conditions and during heavy precipitation and near thunderstorms. The carried out researches allow to consider that the increase of the gamma background is connected, first of all, with the emission of radon and its daughter products from the ground and, to a lesser extent, with bremsstrahlung of charged particles in strong electric fields of a thunderstorm atmosphere.

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