A5081364191- Lightning and Electromagnetic Phenomena
- Earthquake Detection and Analysis
- Ionosphere and magnetosphere dynamics
- Atmospheric aerosols and clouds
- Solar and Space Plasma Dynamics
- Fire effects on ecosystems
- Plant Water Relations and Carbon Dynamics
- Aeolian processes and effects
- Meteorological Phenomena and Simulations
- Marine and environmental studies
- Plant responses to elevated CO2
- Geophysical and Geoelectrical Methods
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Plant Virus Research Studies
- Geophysics and Gravity Measurements
- Electrical Fault Detection and Protection
- Viral Infections and Vectors
- Engineering and Technology Innovations
- High voltage insulation and dielectric phenomena
- Climate variability and models
- Astrophysics and Cosmic Phenomena
- Soil Moisture and Remote Sensing
- Vector-Borne Animal Diseases
- Solar Radiation and Photovoltaics
Hebrew University of Jerusalem
2023-2025
Ariel University
2018-2019
Reichman University
2019
Tel Aviv University
1978-2018
Open University of Israel
2006-2013
IMI TAMI Institute for Research and Development
2009
The Global atmospheric Electric Circuit (GEC) is a fundamental coupling network of the climate system connecting electrically disturbed weather regions with fair across planet. GEC sustains electric field (or potential gradient, PG) which present globally and can be measured routinely at surface using durable instrumentation such as modern mills, are now widely deployed internationally. In contrast to lightning or magnetic fields, PG cannot remotely. Despite existence many datasets (both...
Electrical processes such as lightning and transient luminous events (TLEs) are important drivers of chemical in planetary atmospheres, including potentially facilitating the formation prebiotic molecules. The numerous extrasolar planets discovered present a huge diversity environmental conditions to explore possible emergence electrical processes. To this end, we adapt general circulation models simulate these exoplanet atmospheres study potential Here, results from simulations tidally...
Ground-based measurements of the atmospheric electric field have been recorded continuously since 2013 at Wise Observatory, located in Negev Desert Highland southern Israel. The data used for defining characteristics fair weather and to identify signatures dust storms, lightning activity, clouds. We report here on new results from observations variability (transformed into potential gradient, PG) during several foggy days, along with meteorological wind speed relative humidity. show a...
During the winter of 2005–6, optical ground‐based observations were performed to detect transient luminous events (TLEs) above thunderstorms in vicinity Israel and eastern coastline Mediterranean Sea. Two sites used: Tel Aviv University (TAU) campus Tel‐Aviv (32.5N, 34.5E) Wise astronomical observatory Negev desert (30.6N, 34.76E). We also conducted ELF VLF electromagnetic measurements from TAU array southern Israel. In 4 different storms we detected 30 events: 26 sprites elves. The...
Sprites are a spectacular type of transient luminous events which occur above thunderstorms immediately after lightning. They have shapes giant jellyfish, carrots, or columns and last tens milliseconds. In Earth's atmosphere, sprites mostly emit in red blue wavelengths from excited N 2 + span vertical range between 50 90 km the surface. The emission spectra, morphology, occurrence heights reflect properties planetary atmosphere they inhabit related to intensity initiating parent This paper...
The mode and timing of virally induced cell death hold the potential regulating viral yield, transmission, severity disease. Orbiviruses such as epizootic hemorrhagic disease virus (EHDV) are nonenveloped cytolytic. To date, cells infected with EHDV, signal transduction pathways involved in this process, consequence their inhibition have yet to be characterized. Here, we report that Ibaraki strain EHDV2 (EHDV2-IBA) induces apoptosis, autophagy, a decrease cellular protein synthesis,...
For almost a decade, ground-based measurements of the electric field (Ez) have been conducted continuously at Tel-Aviv University's Wise astronomical observatory, located in Negev desert highland southern Israel. The data enabled identifying characteristics Ez fair weather, during dust storms, lightning activity and passage different cloud types overhead. We present new results observations variability atmospheric several foggy days along with meteorological wind speed relative humidity....
Ground-based measurements of the electric field from a station located in arid Negev region southern Israel have been conducted continuously since 2013. We present here results observations (Potential Gradient, PG) variability during 22 cloudy days, with varying cloud types and base heights, compare measured values mean fair-weather PG. The show an increase PG (~+10 to +70 V m−1) fair weather times low clouds. During mid-altitude (alto) clouds or superposition high clouds, there were small...
Calibrated measurements of TLE radiances are required for understanding the processes occurring at various altitudes and in order to map spatial temporal evolution optical emissions. We present a procedure calculating radiance TLEs, based on observations with calibrated Watec 902H2 Ultimate CCD camera. During ILAN winter sprite campaign we measured brightness TLEs vicinity Israel eastern Mediterranean. Calibration setup, image analysis preliminary results discussed.
There have been two different interests in the past as related to meteors and very low frequency (VLF) radiation atmosphere. The first deals with VLF pulses being produced by entering atmosphere, while other changes properties of ionosphere due meteors. To revisit these ideas, continuous measurements electromagnetic waves were performed simultaneously optical imaging obtained during Perseids, Orionids, Leonids meteor showers August, October, November, 2007 2009. While unique could not be...
We report on ground-based measurements of the atmospheric electric field (Ez= -Potential Gradient (PG)) and current density (Jz) that were conducted at two locations in Israel. One is Emilio Segre cosmic ray station located Mt. Hermon (34.45 N, 2020 m AMSL) northern Israel near Syrian-Lebanon border other Wise astronomical observatory Negev desert highland plateau southern (31.18 870 AMSL). searched for possible effects strong, short-term solar events potential gradient vertical density, as...