A5088738663- Lightning and Electromagnetic Phenomena
- Ionosphere and magnetosphere dynamics
- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Impact of Light on Environment and Health
- Wind Energy Research and Development
- Fire effects on ecosystems
- Solar and Space Plasma Dynamics
- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- Atmospheric Ozone and Climate
- Precipitation Measurement and Analysis
- Ocean Waves and Remote Sensing
- Remote Sensing and LiDAR Applications
- Ocular and Laser Science Research
- Oceanographic and Atmospheric Processes
- Remote Sensing in Agriculture
- Astrophysics and Cosmic Phenomena
- High voltage insulation and dielectric phenomena
- Advanced Optical Sensing Technologies
- Plasma Diagnostics and Applications
- Atomic and Subatomic Physics Research
- Icing and De-icing Technologies
- Marine and environmental studies
- Tropical and Extratropical Cyclones Research
Technical University of Denmark
2019-2025
University of Science and Technology of China
2022
National Institute for Astrophysics
2022
Institute of Atmospheric Physics
2022
Chinese Academy of Sciences
2022
Universitat de València
2022
DTU Space
2019-2020
Terrestrial gamma-ray flashes (TGFs) are transient emissions from thunderstorms, generated by electrons accelerated to relativistic energies in electric fields. Elves ultraviolet and optical excited the lower ionosphere electromagnetic waves radiated lightning current pulses. We observed a TGF an associated elve using Atmosphere-Space Interactions Monitor on International Space Station. The occurred at onset of pulse that elve, early stage flash. Our measurements suggest is fast has high...
Abstract Offshore wind energy is rapidly growing due to high speeds and low visual impact at sea. In the North-Western Mediterranean, Gulf of Lion one area where floating offshore turbines will be installed. Detailed analysis Synthetic Aperture Radar (SAR) scenes revealed flow patterns induced by coastal orography, such as channeling horizontal lee waves, often unresolved in model fields, thus quantifying local winds Tramontane Mistral. High-accuracy retrieved a 10 m level from...
Abstract Corona discharges in thundercloud tops are observed by the Atmosphere‐Space Interactions Monitor (ASIM) as blue flashes at 337 nm spectral line of N 2 and ground receivers so‐called Narrow Bipolar Events (NBEs) radio signals. It has been suggested that electromagnetic radiation from may be powerful enough to excite elves, rapidly expanding rings luminous emissions bottom ionosphere. Here we present optical observations ASIM simultaneous measurements lightning China, confirm this...
Abstract The Atmosphere‐Space Interactions Monitor measures Terrestrial Gamma‐Ray Flashes (TGFs) simultaneously with optical emissions from associated lightning activity. We analyzed measurements at 180–230, 337, and 777.4 nm related to 69 TGFs observed between June 2018 October 2019. All are 90% of them the onset a large pulse, suggesting that they connected initiation current surges. A model photon delay induced by cloud scattering suggests sources pulses 0.7 ms before 4.4 after TGFs,...
Abstract We report on observations of corona discharges at the uppermost region clouds characterized by emissions in a blue band nitrogen molecules 337 nm, with little activity red lightning leaders 777.4 nm. Past work suggests that they are generated cloud tops reaching tropopause and above. Here we explore their occurrence two convective environments same storm: one is developing above tropopause, collapsing lower tops. focus those form distinct category rise times below 20 μs, implying...
Abstract Blue electric streamer discharges in the upper reaches of thunderclouds are observed as flashes 337.0 nm (blue) with faint or no emissions 777.4 (red). Analyzing 3 years measurements by Atmosphere‐Space Interactions Monitor on International Space Station, we find that their distribution rise time falls into two categories. One fast times 30 μs less relatively unaffected cloud scattering and emanate from within ∼2 km tops, another longer deeper clouds. 50% cells generating shallow...
Abstract We report the first Terrestrial Electron Beam detected by Atmosphere‐Space Interactions Monitor. It happened on 16 September 2018. The Monitor Modular X and Gamma ray Sensor recorded a 2 ms long event, with softer spectrum than typically for Flashes (TGFs). lightning discharge associated to this event was found in World Wide Lightning Location Network data, close northern footpoint of magnetic field line that intercepts International Space Station location. Imaging from GOES‐R...
Satellite SAR provides ocean surface wind fields at 10 m above sea level. The objective is to investigate the capability of Synthetic Aperture Radar (SAR) satellite StriX observations for mapping offshore farm wakes. focus on conditions under which an apparent speed surplus generated, measured in 48% 67 images available. results compare well Sentinel-1 observations, showing a 34% rate during several years based 1171 images. Three cases have been studied detail using mesoscale Weather,...
Earth and Space Science Open Archive This work was has been accepted for publication in Geophysical Research Letters. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Spectral Observations Optical Emissions Associated with Terrestrial Gamma-Ray...
Abstract The paper aims to demonstrate how enhance the accuracy of offshore wind resource estimation, specifically by incorporating near-surface satellite-derived observations into mesoscale models. We utilized Weather Research and Forecasting (WRF) Model applied observational nudging integrating ASCAT data over areas achieve this. then evaluated nudged WRF simulations comparing them with from ocean oil platforms, tall masts, a lidar mounted on commercial ferry crossing southern Baltic Sea....
Abstract Wind turbine blades may suffer leading edge erosion when rain hits the extremely fast, resulting in blade damage that will negatively impact power production. Since wind turbines are growing size, this translates into higher tip speeds rotate and, therefore, more prone to erosion. mountainous terrain also due high winds and precipitation rates. Therefore, it becomes important estimate lifetimes farm sites with complexity. Blade lifetime prediction models utilize a time series of...
The Mediterranean Sea heavily relies on fossil fuels for its energy supply, but the shift toward green is imminent. Offshore wind farms represent a pivotal step in this transition. However, deploying these effectively requires an accurate assessment of potential offshore areas.Unlike Northern Europe, research sparse due to intricate topography and bathymetry. Mediterranean's coastlines, hemmed by mountain ranges, create unique climates, posing challenges modeling conditions. Additionally,...
Accurate precipitation estimation is crucial for various meteorological and climatological applications, including renewable energy generation. The NASA Integrated Multi-satellitE Retrievals Global Precipitation Measurement (IMERG) product provides data derived from microwave infrared satellite sensors. In this study, we evaluate the performance of two successive versions, V6 V7, IMERG Final Satellite Product. The evaluation V7 products involves comparing rainfall time series 6...
ABSTRACT Satellite synthetic aperture radar (SAR) provides ocean surface wind fields at 10 m above sea level. The objective is to investigate the capability of SAR satellite StriX observations for mapping offshore farm wakes. focus on conditions under which an apparent speed‐up generated, measured in 48% 67 images available. results compare well Sentinel‐1 observations, showing a 34% rate during several years based 1171 images. Three cases have been studied detail using mesoscale Weather,...
Abstract Blue corona discharges are often observed at the top of thunderclouds. They bursts streamers, but cloud conditions that enable them not well known. Here we present observations by Atmosphere‐Space Interactions Monitor (ASIM) 92 during its ∼1 min pass over tropical cyclone Fani in Bay Bengal from 20:10:55 to 20:12:05 UTC on 30 April 2019. The were convective cells forming rainbands where Convective Available Potential Energy reached ∼6,000 J kg −1 . Cloud‐Aerosol Lidar and Infrared...
Abstract Elves are rapidly expanding rings of optical emissions in the lower ionosphere, excited by transient electromagnetic pulses from lightning clouds below. Narrow bipolar events (NBEs) signatures radio signals intra-cloud discharges. They thought to be fast streamer breakdown that may trigger onset and blue jets. Recent observations space suggest they carry sufficient current excite elves. Here, we report first simultaneous observation NBEs elves confirm this hypothesis. Three negative...
The Atmosphere-Space Interaction Monitor (ASIM) is an observatory mounted outside the Columbus module on International Space Station. It has been operational since April 13 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> , 2018. contains two instruments: Modular X- and Gamma-ray Sensor (MXGS) Multispectral Imaging Array (MMIA). objective of ASIM to monitor thunderstorms auroras, including lightning discharges, especially discharges...
Blue electric streamer discharges in the upper reaches of thunderclouds are observed as flashes 337.0 nm (blue) with faint or no emissions 777.4 (red). Analyzing 3 years measurements by Atmosphere-Space Interactions Monitor (ASIM) on International Space Station (ISS), we find that their distribution rise time falls into two categories. One fast times 30 μs less relatively unaffected cloud scattering and emanate from within ∼2 km tops, another longer deeper clouds. 46% cells generating...
We report the first Terrestrial Electron Beam detected by Atmosphere‐Space Interactions Monitor. It happened on 16 September 2018. The Monitor Modular X and Gamma ray Sensor recorded a 2 ms long event, with softer spectrum than typically for Flashes (TGFs). lightning discharge associated to this event was found in World Wide Lightning Location Network data, close northern footpoint of magnetic field line that intercepts International Space Station location. Imaging from GOES‐R geostationary...
Earth and Space Science Open Archive This work has been accepted for publication in Journal of Geophysical Research - Physics. Version RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing an older version [v1]Go to new versionThe First Terrestrial Electron Beam Observed by The Atmosphere-Space Interactions MonitorAuthors David Sarria iD Pavlo Kochkin Nikolai Østgaard Lehtinen Andrew...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Geophysical Research Letters. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Observation of corona discharges cloud microphysics top thunderstorm cells in cyclone...