Article
Meteorology & Atmospheric Sciences
Yasuhiro Minamoto, Masashi Kamogawa, Akira Kadokura, Mitsuteru Sato, Satoshi Omiya
Summary: In this study, a novel method is proposed to distinguish atmospheric electric field variations caused by the global electrical circuit and local meteorological-induced variations. By comparing the electric field values measured at two different heights, the method successfully identifies disturbances caused by charged blowing snow particles and provides fair-weather atmospheric electric field data.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Shaista Afreen, N. Jeni Victor, Salik Nazir, Devendraa Siingh, Gowher Bashir, Nissar Ahmad, Sheikh Javid Ahmad, R. P. Singh
Summary: This study reports atmospheric electric field observations at Gulmarg station in Kashmir. The diurnal variation of potential gradient (PG) is explained based on the different surface conditions in summer and winter. The study also finds that radon concentration and meteorological parameters play important roles in influencing the PG measurements.
JOURNAL OF EARTH SYSTEM SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Jingfeng Liu, Zhiheng Du, Dongqi Zhang, Shimeng Wang
Summary: This study presents in-situ real-time measurements of water vapor isotopes along the transect from Zhongshan Station to Dome A in East Antarctica for the first time. The results show a gradual decrease in surface vapor stable isotopes with distance from the coast, along with an increase in d-excess with elevation rise. The spatial variation of vapor isotopic composition indicates different atmosphere circulation backgrounds controlling the inland water cycle.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
J. Tacza, K. A. Nicoll, E. Macotela
Summary: Analysis of the variation of potential gradient at ground level is important in monitoring the global electric circuit and its interactions with solar and geophysical phenomena. This study conducted spectral analysis of potential gradient recorded at several sites in both the Northern and Southern Hemisphere. The results revealed various periodicities and their relationships with solar rotation and Madden-Julian Oscillation. The findings contribute to a better understanding of the global electric circuit.
ATMOSPHERIC RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Yasuhiro Minamoto, Masashi Kamogawa, Akira Kadokura, Satoshi Omiya, Naohiko Hirasawa, Mitsuteru Sato
Summary: This study discusses the observation of positive atmospheric electric fields during blizzards in polar regions and the subsequent appearance of negative electric fields. Through experiments and field observations, it was found that snow particles carry negative charges during snowstorms, and a negative charge layer forms on the ground after blizzards. These phenomena were verified through numerical calculations and modeling.
ATMOSPHERIC RESEARCH
(2021)
Article
Astronomy & Astrophysics
Chao Chen, Zhengyang Li, Chenwei Yang, Zijian Han, Xin Jiang, Tingting Liu, Xiangyan Yuan, Peng Jiang, Tuo Ji, Xu Yao, Mingfei Chen
Summary: The Antarctic Plateau is considered to be the best ground-based astronomical site on Earth. Multi-band Survey Telescope (MST) is the first multicolour simultaneous survey telescope in Antarctica, equipped with a Newtonian telescope structure, a new alignment scheme, a defrosting ITO window, and a high-precision equatorial mount. Since March 2022, MST has been carrying out observation normally in Zhongshan Station, providing new experience for the follow-up design and installation of Antarctic telescopes.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Geochemistry & Geophysics
Jiahao Wu, Ziming Zou, Tao Chen, Yunlong Li, Yang Lu, Shuo Ti, Lei Li
Summary: This study investigates the variation of fair-weather atmospheric electric field by measuring the vertical component of the electric field and visual range. The results show a strong negative correlation between the fair-weather electric field and visual range, indicating the dominance of aerosol concentration in the variation of fair-weather. The main source of aerosol concentration variation is likely the sunrise and sunset effect.
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
(2023)
Article
Astronomy & Astrophysics
Lei Li, Tao Chen, Jiajun Song, Shuo Ti, Shihan Wang, Chunlin Cai, Wen Li, Jing Luo
Summary: In this paper, the authors analyzed the atmospheric electric field data from three global observation stations and combined it with meteorological and geomagnetic activity data. They filtered the fair-day atmospheric electric field data, plotted the average fair-weather atmospheric electric field curve, and compared it with sunrise, sunset times, and PM2.5 concentrations. The results showed positive correlations between the differences and PM2.5 concentrations.
Article
Environmental Sciences
Lei Nie, Xuemin Zhang
Summary: This study reports the anomalies of atmospheric electric field (AEF) associated with seismic-geological activity in the Sichuan-Yunnan region of China. The study analyzed the interference of different meteorological factors on AEF and ruled out the influence of weather factors on the AEF anomalies. The common features of the anomalies were summarized and their homology was verified. The findings will contribute to distinguishing and characterizing AEF anomalies associated with non-meteorological elements in pre-seismic geological activity.
Article
Geography, Physical
Fengguan Gu, Qinghua Yang, Frank Kauker, Changwei Liu, Guanghua Hao, Chao-Yuan Yang, Jiping Liu, Petra Heil, Xuewei Li, Bo Han
Summary: This study uses a single-column sea ice model to simulate the sea ice thickness in the Antarctic winter of 2016 and compares it with in situ observations. The results show that the precipitation in the atmospheric reanalysis has a significant impact on the sea ice thickness, while increasing snow depth inhibits the growth of sea ice.
Article
Meteorology & Atmospheric Sciences
Xiaobin Zhang, Xingyi Zhang, Tianli Bo
Summary: The study found that there is no significant difference in atmospheric magnetic field variations between hazy days and fair weather, while dusty, rainy, snowy, and thunderstorm conditions significantly affect the atmospheric magnetic field variations. This suggests that different weather conditions can induce changes in the atmospheric magnetic field.
BOUNDARY-LAYER METEOROLOGY
(2021)
Article
Environmental Sciences
Biao Tian, Minghu Ding, Davide Putero, Chuanjin Li, Dongqi Zhang, Jie Tang, Xiangdong Zheng, Lingen Bian, Cunde Xiao
Summary: Through continuous monitoring and analysis of near-surface ozone at Zhongshan Station in East Antarctica, it was found that ozone enhancement events frequently occur in the warm season. These events are associated with photochemical reactions in the stratosphere and air mass transport from coastal areas.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Jennifer G. Wilson, Kenneth L. Cummins
Summary: Natural lightning and associated clouds behave differently over land and ocean, with larger storm-related static fields observed over oceanic sites. Offshore environments are cleaner with limited variations in local space charge, lower surface aerosol densities, and fewer local radioactive sources, contributing to different patterns in diurnal fair-weather fields compared to coastal and inland sites. The time-evolution of electric fields during storms also shows significant differences between land and ocean, warranting further study.
ATMOSPHERIC RESEARCH
(2021)
Article
Biophysics
K. Kourtidis, K. Szabone Andre, A. Karagioras, I. -A. Nita, G. Satori, J. Bor, N. Kastelis
Summary: The analysis found that circulation weather types have a significant impact on the atmosphere's electric state, influencing factors such as potential gradient and Schumann resonances. By studying data from stations in Greece and Hungary, the research reveals how different CTs can result in varied atmospheric electric field behaviors.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2021)
Article
Environmental Sciences
Konstantin Pustovalov, Petr Nagorskiy, Mariya Oglezneva, Sergei Smirnov
Summary: This study aims to investigate the characteristics and variations of the electric field in the southern part of Western Siberia, focusing on the city of Tomsk. The average annual potential gradient in Tomsk is found to be 282 V/m, and it exhibits diurnal variations with continental-type oscillations, with the main minimum occurring at 7:00 local time and the main maximum at 21:00 local time. The annual mode reveals that the maximum potential gradient is observed in February, while the minimum is recorded in June.
Article
Astronomy & Astrophysics
G. Q. Yan, F. S. Mozer, G. K. Parks, C. L. Cai, T. Chen, M. L. Goldstein, Y. Ren
Summary: Within a Kelvin-Helmholtz vortex at the duskside magnetopause, a substructure characterized by two flux enhancements of cold magnetosheath plasma in a background of hot magnetosphere plasma is observed. The substructure is accompanied by plasma transport across the magnetopause, and the transport region is found to split into two parts. The observations suggest that this secondary R-T instability within the K-H vortex can drive plasma transport across the magnetopause.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2022)
Article
Meteorology & Atmospheric Sciences
Lei Li, Jianfeng Su, Tao Chen, Shuo Ti, Han Wu, Jing Luo, Wen Li, Renkang Li
Summary: This paper introduces two feasible methods for measuring atmospheric conductivity and validates their effectiveness through experiments. The results show that atmospheric conductivity is influenced by atmospheric gas and ionic composition, and may experience abnormal changes in the presence of clouds.
METEOROLOGY AND ATMOSPHERIC PHYSICS
(2022)
Article
Geochemistry & Geophysics
Jiahao Wu, Ziming Zou, Tao Chen, Yunlong Li, Yang Lu, Shuo Ti, Lei Li
Summary: This study investigates the variation of fair-weather atmospheric electric field by measuring the vertical component of the electric field and visual range. The results show a strong negative correlation between the fair-weather electric field and visual range, indicating the dominance of aerosol concentration in the variation of fair-weather. The main source of aerosol concentration variation is likely the sunrise and sunset effect.
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Tao Chen, Lei Li, Xiaoxin Zhang, Chi Wang, Xiaobing Jin, Han Wu, Shuo Ti, Shihan Wang, Jiajun Song, Wen Li, Jing Luo, Chunlin Cai, Xuemin Zhang, Shi Che, Xiaodong Peng, Xiong Hu
Summary: This paper reveals the precursor of inland earthquakes on an hourly scale. By analyzing the data of 23 inland earthquakes in China, it is found that when the weather conditions near the epicenter are fair, an anomalously negative atmospheric electrostatic signal can be observed approximately 2-48 hours before the earthquake occurs. The paper also demonstrates a successful single-station alarm for moderate-magnitude earthquakes and proposes a possible mechanism for the precursor signal.
APPLIED SCIENCES-BASEL
(2023)
Article
Meteorology & Atmospheric Sciences
Lei Li, Tao Chen, Shuo Ti, Shihan Wang, Chunlin Cai, Wen Li, Jing Luo
Summary: This article presents the observations of atmospheric electric field and its effects from weather conditions at Gar Station. By defining strict and reliable criteria for fair weather, the authors reveal the diurnal variation curve of the average fair weather atmospheric electric field and compare it with Carnegie curves.
METEOROLOGY AND ATMOSPHERIC PHYSICS
(2023)
Article
Chemistry, Analytical
Shihan Wang, Tao Chen, Hongjian Wang
Summary: This paper introduces an adaptive array processing technology for phased array radar, which uses the incremental delta-bar-delta algorithm to control the time-varying learning rates. The results show that this algorithm improves performance in nonstationary environments.
Article
Astronomy & Astrophysics
G. Q. Yan, G. K. Parks, F. S. Mozer, M. L. Goldstein, T. Chen, Y. Liu
Summary: Periodic fluctuations with a period of 85 seconds were observed at the dayside magnetopause, characterized by magnetic field compressions and perpendicular field flappings. These observations are consistent with the theoretical predictions of the Rayleigh-Taylor instability. The perturbations in the electric field were identified as typical sinusoidal signals with a 90 degrees phase difference, and the resulting plasma motions were observed in pitch-angle distributions and distribution functions.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Lei Li, Tao Chen, Jiajun Song, Shuo Ti, Shihan Wang, Chunlin Cai, Wen Li, Jing Luo
Summary: In this paper, the authors analyzed the atmospheric electric field data from three global observation stations and combined it with meteorological and geomagnetic activity data. They filtered the fair-day atmospheric electric field data, plotted the average fair-weather atmospheric electric field curve, and compared it with sunrise, sunset times, and PM2.5 concentrations. The results showed positive correlations between the differences and PM2.5 concentrations.
Article
Astronomy & Astrophysics
H. Wu, T. Chen, V. Kalegaev, S. Ye
Summary: This study examines the phenomenon of electron flux dropout in the outer radiation belt. By analyzing data from multiple satellites, it is found that electron flux dropout can occur at both MeV and keV energy levels, and different mechanisms are responsible for the depletion in each energy range.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Geosciences, Multidisciplinary
Lei Li, Tao Chen, Chao Shen, Shuo Ti, Shihan Wang, Chunlin Cai, Wen Li, Jing Luo
Summary: The Earth's electrical environment is influenced by internal and external driving factors. Internal factors include lightning storms, global aerosol concentrations, and cloud coverage, while external factors are caused by space weather phenomena. This study focuses on the changes in cosmic ray intensity and atmospheric electric field during a solar activity event in September 2017. The results show a significant decrease in cosmic ray intensity and simultaneous decrease in atmospheric electric field at the Azores and Studenec stations.
GEOSCIENCE LETTERS
(2023)
Article
Astronomy & Astrophysics
H. Wu, T. Chen, V. Kalegaev, S. Ye
Summary: This study investigates the phenomenon of electron flux dropout in the outer radiation belt and reveals the different behaviors of electron flux at different energy levels. These findings are crucial for understanding the evolutionary process and mechanisms of the radiation belt.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
