Zilong Qin
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View article: Ionospheric Elves Powered by Corona Discharges in Overshooting Thunderclouds
Ionospheric Elves Powered by Corona Discharges in Overshooting Thunderclouds Open
Corona discharges in thundercloud tops are observed by the Atmosphere‐Space Interactions Monitor (ASIM) as blue flashes at the 337 nm spectral line of N 2 and by ground receivers as so‐called Narrow Bipolar Events (NBEs) in the radio signa…
View article: A Lightweight CNN-Transformer Implemented via Structural Re-Parameterization and Hybrid Attention for Remote Sensing Image Super-Resolution
A Lightweight CNN-Transformer Implemented via Structural Re-Parameterization and Hybrid Attention for Remote Sensing Image Super-Resolution Open
Remote sensing imagery contains rich information about geographical targets, and performing super-resolution (SR) reconstruction on such images requires greater feature representation capabilities. Convolutional neural network (CNN)-based …
View article: A Semantic Segmentation Method for Remote Sensing Images Based on an Improved TransDeepLab Model
A Semantic Segmentation Method for Remote Sensing Images Based on an Improved TransDeepLab Model Open
Due to the various types of land cover and large spectral differences in remote sensing images, high-quality semantic segmentation of these images still faces challenges such as fuzzy object boundary extraction and difficulty in identifyin…
View article: Exploring the Contribution Roles from Municipal Cities in the Rise in Household CO2 Emissions in China: From a Local Scale Analysis in the Global Context
Exploring the Contribution Roles from Municipal Cities in the Rise in Household CO2 Emissions in China: From a Local Scale Analysis in the Global Context Open
A major source of carbon dioxide emissions (CO2) arises from the household sector. Recent studies have reported increasing household CO2 emissions (HCO2) in many countries. Cities represent a key administrative level in China and can be ma…
View article: Source Altitude of Energetic In‐Cloud Pulses Inside Thunderstorms and Implication for the Intrinsic Brightness of Terrestrial Gamma‐Ray Flashes
Source Altitude of Energetic In‐Cloud Pulses Inside Thunderstorms and Implication for the Intrinsic Brightness of Terrestrial Gamma‐Ray Flashes Open
Upward Terrestrial Gamma‐Ray Flashes (TGFs) are mainly produced during the upward propagating negative leaders inside thunderclouds. The exact source position of TGFs, which is crucial to understanding TGF source properties, is still uncle…
View article: Study on partial load vortex and pressure pulsation characteristics of Francis turbine
Study on partial load vortex and pressure pulsation characteristics of Francis turbine Open
Under partial load condition of the Francis turbine, problems such as hydraulic vibration, noise, and high amplitude pressure pulsation that endanger the safe and efficient operation of the unit are inevitable during the transient process.…
View article: Meteorological and Electrical Conditions of Two Mid‐latitude Thunderstorms Producing Blue Discharges
Meteorological and Electrical Conditions of Two Mid‐latitude Thunderstorms Producing Blue Discharges Open
Blue discharges are one type of rarely observed upward discharge emerging from the top of thunderstorms. The favorable meteorological conditions and charge structures needed to produce this marvelous phenomenon are still poorly understood.…
View article: Data for "Prima facie evidence of the instant impact of a lightning stroke on the lower ionosphere"
Data for "Prima facie evidence of the instant impact of a lightning stroke on the lower ionosphere" Open
Here we presented the RAW EM-Field data (dE/dt, B1, B2) of sferics (All triggered RS sferics ranging from 60 km through 800 km to GZ station) which has been analyzed in a manuscript entitled "Prima facie evidence of the instant impact of a…
View article: Data for "Prima facie evidence of the instant impact of a lightning stroke on the lower ionosphere"
Data for "Prima facie evidence of the instant impact of a lightning stroke on the lower ionosphere" Open
Here we presented the RAW EM-Field data (dE/dt, B1, B2) of sferics (All triggered RS sferics ranging from 60 km through 800 km to GZ station) which has been analyzed in a manuscript entitled "Prima facie evidence of the instant impact of a…
View article: Leader Charges, Currents, Ambient Electric Fields, and Space Charges Along Downward Positive Leader Paths Retrieved From Ground Measurements in Metropolis
Leader Charges, Currents, Ambient Electric Fields, and Space Charges Along Downward Positive Leader Paths Retrieved From Ground Measurements in Metropolis Open
An approach for retrieving the leader channel charge density, leader current, ambient electric field, and space charge along a leader channel path from ground observations with a complicated ground condition was presented. With this approa…
View article: On the Accuracy of Ray‐Theory Methods to Determine the Altitudes of Intracloud Electric Discharges and Ionospheric Reflections: Application to Narrow Bipolar Events
On the Accuracy of Ray‐Theory Methods to Determine the Altitudes of Intracloud Electric Discharges and Ionospheric Reflections: Application to Narrow Bipolar Events Open
Narrow bipolar events (NBEs) (also called narrow bipolar pulses [NBPs] or compact intracloud discharges [CIDs]) are energetic intracloud discharges characterized by narrow bipolar electromagnetic waveforms identified from ground‐based very…
View article: The Spatial Evolution of Upward Positive Stepped Leaders Initiated From a 356‐m‐Tall Tower in Southern China
The Spatial Evolution of Upward Positive Stepped Leaders Initiated From a 356‐m‐Tall Tower in Southern China Open
Two initial upward positive leaders (UPLs) in upward negative flashes initiated from a 356‐m‐tall tower were observed with a high‐speed camera, an electric field sensor, and a magnetic field sensor. Although the waveforms of electric field…
View article: A GPU-Based Grid Traverse Algorithm for Accelerating Lightning Geolocation Process
A GPU-Based Grid Traverse Algorithm for Accelerating Lightning Geolocation Process Open
Most lightning location networks are based on real-time analytical solutions of certain simplified models, while the reality is much more complicated. In this paper, we introduce a graphics processing unit (GPU)-based parallel computing al…
View article: Lightning Initiation Processes Imaged With Very High Frequency Broadband Interferometry
Lightning Initiation Processes Imaged With Very High Frequency Broadband Interferometry Open
Recent measurements of narrow bipolar lightning events (NBEs) by very high frequency (VHF) radio interferometer have resolved the dynamic development of this special lightning process with submicrosecond time resolution, and showed that th…
View article: Optical and Current Measurements of Lightning Attachment to the 356-m-High Shenzhen Meteorological Gradient Tower in Southern Coastal Area of China
Optical and Current Measurements of Lightning Attachment to the 356-m-High Shenzhen Meteorological Gradient Tower in Southern Coastal Area of China Open
This paper presents in detail the instrumentation for coordinated optical and current measurements of lightning discharges to a 356-m-high meteorological tower and the observation results. The tower, which is located at Shenzhen, a lower l…
View article: Data from: Lightning initiation processes imaged with very high frequency broadband interferometry
Data from: Lightning initiation processes imaged with very high frequency broadband interferometry Open
Recent measurements of narrow bipolar lightning events (NBEs) by very high frequency (VHF) radio interferometer have resolved the dynamic development of this special lightning process with submicrosecond time resolution, and showed that th…
View article: A leader‐return‐stroke consistent macroscopic model for calculations of return stroke current and its optical and electromagnetic emissions
A leader‐return‐stroke consistent macroscopic model for calculations of return stroke current and its optical and electromagnetic emissions Open
A downward lightning flash usually starts with a downward leader and an upward connecting leader followed by an upward return stroke. It is the preceding leader that governs the following return stroke property. Besides, the return stroke …
View article: An improved ray theory and transfer matrix method‐based model for lightning electromagnetic pulses propagating in Earth‐ionosphere waveguide and its applications
An improved ray theory and transfer matrix method‐based model for lightning electromagnetic pulses propagating in Earth‐ionosphere waveguide and its applications Open
An improved ray theory and transfer matrix method‐based model for a lightning electromagnetic pulse (LEMP) propagating in Earth‐ionosphere waveguide (EIWG) is proposed and tested. The model involves the presentation of a lightning source, …