Yoav Yair
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View article: Multi-parametric analysis of thunderstorm ground enhancements (TGE) and associated gamma-ray emissions on Mount Hermon, Israel
Multi-parametric analysis of thunderstorm ground enhancements (TGE) and associated gamma-ray emissions on Mount Hermon, Israel Open
Thunderstorm Ground Enhancements (TGEs), sometimes referred to as gamma-ray glows, are transient increases in surface-level gamma-ray flux driven by thunderstorm electric fields. This study investigates two TGE events observed on January 4…
View article: Comparing lightning Superbolts detected independently in the optical and VLF ranges
Comparing lightning Superbolts detected independently in the optical and VLF ranges Open
This study investigates the phenomenon of “Superbolts”, High-intensity lightning flashes – by examining their occurrence and correlations across multiple lightning monitoring networks. Given inconsistencies in Superbolt d…
View article: Towards predicting lightning and TLE’s in exoplanetary atmospheres 
Towards predicting lightning and TLE’s in exoplanetary atmospheres  Open
Electrical processes such as lightning and transient luminous events (TLEs) are important drivers of chemical processes in planetary atmospheres, including potentially facilitating the formation of important prebiotic molecules. The numero…
View article: UHU - another experiment to observe lightning and TLEs from the ISS
UHU - another experiment to observe lightning and TLEs from the ISS Open
Several successful attempts have been made so far to utilize the uninterrupted view on the atmosphere from space and discover yet undocumented features of lightning activity and transient luminous events (TLEs), most recently THOR and ILAN…
View article: C3IEL, the Cluster for Cloud evolution ClImatE and Lightning Mission to Study Convective Clouds at High Spatial and Temporal Resolution
C3IEL, the Cluster for Cloud evolution ClImatE and Lightning Mission to Study Convective Clouds at High Spatial and Temporal Resolution Open
The space-borne C3IEL (Cluster for Cloud evolution, ClImate and Lightning) mission, jointly developed jointly by the French and the Israeli space agency, aims at providing new insights on convective clouds, at high spatial and temporal res…
View article: Simulating the possible regions of delayed sprite inception above thunderstorms using piecewise-varying lightning current time dependence 
Simulating the possible regions of delayed sprite inception above thunderstorms using piecewise-varying lightning current time dependence  Open
The appearance of transient luminous events (TLEs) in the mesosphere is known to be associated with strong (almost exclusively) positive cloud-to-ground (+CG) strokes with large charge moment change (CMC) values in tropospheric thunderstor…
View article: Cloud to surface lightning activity in the Eastern Mediterranean Sea in the context of marine infrastructure safety
Cloud to surface lightning activity in the Eastern Mediterranean Sea in the context of marine infrastructure safety Open
Lightning poses a significant threat to safety at sea and to marine infrastructure. Lightning protection systems are designed to withstand currents <200 kA; however, the theoretical limit of lightning intensity is 2–3 times higher. Lightni…
View article: Lightning response to temperature and aerosols
Lightning response to temperature and aerosols Open
Lightning has profound social implications for public safety and usually causes casualties and significant damage to infrastructure. Due to the advancement of both ground-based and spaceborne detection technology, lightning has been monito…
View article: Lightning superbolts follow ship-tracks in Eastern Mediterranean winter thunderstorms
Lightning superbolts follow ship-tracks in Eastern Mediterranean winter thunderstorms Open
The interaction between aerosol particles and thunderstorm evolution and properties is complex and was studied by direct observational campaigns, remote sensing from space and through numerical simulations. Aerosols invigorate convection a…
View article: Numerical simulations of the region of possible sprite inception in the mesosphere above winter thunderstorms under wind shear
Numerical simulations of the region of possible sprite inception in the mesosphere above winter thunderstorms under wind shear Open
Transient luminous events (TLEs) is the collective name given to mesospheric electrical breakdown phenomena occurring in conjunction with strong lightning discharges in tropospheric thunderstorms. They include elves, sprites, haloes and je…
View article: Observations of thunderstorms with a neuromorphic camera: First results of the THOR-DAVIS experiment on the International Space Station.
Observations of thunderstorms with a neuromorphic camera: First results of the THOR-DAVIS experiment on the International Space Station. Open
THOR-DAVIS is an experiment on the International Space Station to observe thunderclouds and their electrical activity with a neuromorphic camera and a co-aligned video camera. A neuromorphic camera, or 'event camera,' only reads pixels whe…
View article: Thunderstorm Ground Enhancement (TGE) Signatures in the Eastern Mediterranean Using Gamma Ray and Atmospheric Electricity Measurements
Thunderstorm Ground Enhancement (TGE) Signatures in the Eastern Mediterranean Using Gamma Ray and Atmospheric Electricity Measurements Open
Intense electric fields within thunderclouds can lead to increased flows of high energetic electrons, resulting in the generation of gamma rays and neutrons. This can be manifested as Thunderstorm Ground Enhancement (TGE), an abrupt enhanc…
View article: C3IEL, the Cluster for Cloud evolution ClImatE and Lightning mission to study convective clouds at high spatial and temporal resolutions
C3IEL, the Cluster for Cloud evolution ClImatE and Lightning mission to study convective clouds at high spatial and temporal resolutions Open
The French-Israeli space-borne C3IEL (Cluster for Cloud evolution, ClImate and Lightning) mission aims at providing new insights on convective clouds, at high spatial and temporal resolutions, close to the scales of the individual convecti…
View article: Numerical simulations of the mesospheric region for sprite inception in winter thunderstorms over the Eastern Mediterranean
Numerical simulations of the mesospheric region for sprite inception in winter thunderstorms over the Eastern Mediterranean Open
Winter thunderstorms often exhibit compact vertical dimensions and lower heights of the major charge centers and are often accompanied by strong wind shear, with a propensity for positive cloud-to-ground strokes that can produce mesospheri…
View article: Lightning follows ship-tracks in Eastern Mediterranean winter thunderstorms.
Lightning follows ship-tracks in Eastern Mediterranean winter thunderstorms. Open
The interaction between aerosol particles and thunderstorm evolution and properties is complex and was studied by direct observational campaigns, remote sensing from space and through numerical simulations. Aerosols invigorate convection a…
View article: Space-based optical imaging of blue corona discharges on cumulonimbus cloud tops
Space-based optical imaging of blue corona discharges on cumulonimbus cloud tops Open
The ILAN-ES (Imaging of Lightning And Nocturnal Emissions from Space) experiment was conducted in April 2022 as part of the Axiom company AX-1 private mission to the International Space Station, in the framework of Rakia, an Israeli set of…
View article: No Response of Surface-Level Atmospheric Electrical Parameters in Israel to Severe Space Weather Events
No Response of Surface-Level Atmospheric Electrical Parameters in Israel to Severe Space Weather Events Open
We report 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 at the Emilio Segre cosmic ray station located on Mt. Her…
View article: The Response of Surface-Level Atmospheric Electrical Parameters in Israel to Severe Space Weather Events
The Response of Surface-Level Atmospheric Electrical Parameters in Israel to Severe Space Weather Events Open
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 the Emilio Segre cosmic ray station located on Mt. Herm…
View article: Predicting Eastern Mediterranean Flash Floods Using Support Vector Machines with Precipitable Water Vapor, Pressure, and Lightning Data
Predicting Eastern Mediterranean Flash Floods Using Support Vector Machines with Precipitable Water Vapor, Pressure, and Lightning Data Open
Flash floods in the Eastern Mediterranean (EM) region are considered among the most destructive natural hazards, which pose a significant challenge to model due to their high complexity. Machine learning (ML) methods have made a significan…
View article: Spatial variability of lightning intensity over the Mediterranean sea correlates with seawater properties
Spatial variability of lightning intensity over the Mediterranean sea correlates with seawater properties Open
The divergence of total alkalinity (TA) from conservation with salinity (S) and relatively acidic conditions (pH) in surface seawater was suggested to explain the high prevalence of lightning superbolts in the Mediterranean sea, North sea …
View article: Aerosol Impacts on Storm Electrification and Lightning Discharges Under Different Thermodynamic Environments
Aerosol Impacts on Storm Electrification and Lightning Discharges Under Different Thermodynamic Environments Open
The impacts of aerosol and thermodynamics on electrification and lightning activities have been investigated in detail using the Weather Research and Forecasting Model coupled with a double‐moment microphysics parameterization and an expli…
View article: Observing lightning and transient luminous events from the International Space Station during ILAN-ES: an astronaut's perspective
Observing lightning and transient luminous events from the International Space Station during ILAN-ES: an astronaut's perspective Open
The ILAN-ES (Imaging of Lightning And Nocturnal Emissions from Space) experiment was conducted by Israeli astronaut Eytan Stibbe in April 2022 as part of the Axiom Space company AX-1 private mission to the International Space Station, in t…
View article: The Effects of Fog on the Atmospheric Electrical Field Close to the Surface
The Effects of Fog on the Atmospheric Electrical Field Close to the Surface Open
Ground-based measurements of the atmospheric electric field have been recorded continuously since 2013 at the Wise Observatory, located in the Negev Desert Highland in southern Israel. The data have been used for defining the characteristi…
View article: Effects of cloud-to-water lightning strokes on open sea fish cages during eastern Mediterranean winter thunderstorms
Effects of cloud-to-water lightning strokes on open sea fish cages during eastern Mediterranean winter thunderstorms Open
Based on data obtained by the Earth Networks Total Lightning Network (ENTLN) for 5 winter seasons (DJF, 2018-2022), the flash density of lightning striking the water surface of the eastern Mediterranean Sea up to 50 km from the Israeli coa…
View article: The effects of fog on the atmospheric electrical field close to the surface
The effects of fog on the atmospheric electrical field close to the surface Open
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 the Negev desert highland in southern Israel. The data enabled id…