A5011988638- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Astro and Planetary Science
- Magnetic confinement fusion research
- Earthquake Detection and Analysis
- Planetary Science and Exploration
- Astrophysical Phenomena and Observations
- Plasma Diagnostics and Applications
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Atomic and Molecular Physics
- Astrophysics and Cosmic Phenomena
- Dust and Plasma Wave Phenomena
- Magnetic Field Sensors Techniques
- Atomic and Subatomic Physics Research
- Geophysical and Geoelectrical Methods
- Particle accelerators and beam dynamics
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Space Science and Extraterrestrial Life
- Stellar, planetary, and galactic studies
- Atmospheric chemistry and aerosols
Chinese Academy of Sciences
2015-2025
National Space Science Center
2017-2025
Shanghai CASB Biotechnology (China)
2025
Chinese Academy of Meteorological Sciences
2003-2024
Hebei University of Engineering
2024
Chinese Academy of Agricultural Engineering
2024
Ministry of Agriculture and Rural Affairs
2024
Aerospace Information Research Institute
2024
University of Science and Technology of China
2021-2023
Yunnan Normal University
2022
Abstract. Huabei, located between 32° N and 42° N, is part of eastern China includes administratively the Beijing Tianjin Municipalities, Hebei Shanxi Provinces, Inner-Mongolia Autonomous Region. Over past decades, region has experienced dramatic changes in air quality climate, become a major focus environmental research China. Here we present new inventory pollutant emissions Huabei for year 2003 developed as project Influence Pollution on Aerosols Cloud Microphysics North (IPAC-NC). Our...
Abstract In this paper we use the full armament of MMS (Magnetospheric Multiscale) spacecraft to study magnetic reconnection in turbulent magnetosheath downstream a quasi‐parallel bow shock. Contrarily magnetopause and magnetotail cases, only few observations have been reported. The case presents, for first time, both fluid‐scale kinetic‐scale signatures an ongoing magnetosheath. are crossing inflow outflow regions ion diffusion region (IDR). Inside outflows D shape distributions observed....
Oral drug delivery is considered the most preferred mode of treatment because its high patient compliance and minimal invasiveness. However, oral protein has been a difficult problem which restricts application due to unstable inefficient penetration in gastrointestinal tract. In this study, novel OCMC/SA nanohydrogel was prepared by using O-carboxymethyl chitosan (OCMC) sodium alginate (SA) solve problem. The had typical nanostructure, helpful increase specific surface area enhanced...
The climatic effects of various types aerosol in China have been investigated by using the atmospheric general circulation model (AGCM) developed at University California, Los Angeles (UCLA). includes an efficient and physically based radiation parameterization scheme specifically for application to clouds aerosols. Simulation results show that inclusion a background optical depth 0.2 reduces global mean net surface solar flux about 5 W m −2 produces decrease precipitation tropics as result...
Magnetic holes (MHs), with a scale much greater than \r{ho}i (proton gyroradius), have been widely reported in various regions of space plasmas. On the other hand, kinetic-size magnetic (KSMHs), previously called small size (SSMHs), order magnitude or less only Earth's magnetospheric plasma sheet. In this study, we report such KSMHs magnetosheath whereby use measurements from Magnetospheric Multiscale (MMS) mission, which provides three-dimensional (3D) particle distribution resolution...
Abstract Magnetic reconnection is believed to be the main driver transport solar wind into Earth’s magnetosphere when magnetopause features a large magnetic shear. However, even shear too small for spontaneous reconnection, Kelvin–Helmholtz instability driven by super-Alfvénic velocity expected facilitate transport. Although previous kinetic simulations have demonstrated that non-linear vortex flows from gives rise vortex-induced and resulting plasma transport, system sizes of these were...
Abstract The magnetopause deformation due to the upstream magnetosheath pressure perturbations is important understand solar wind‐magnetosphere coupling process, but how identify such events from in situ spacecraft observations still challenging. In this study, we investigate crossing with fast‐moving cold ions magnetosphere Magnetospheric Multiscale observations, and find when are present at magnetopause, they closely associated deformation, which featured by fast motion significant normal...
We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by Magnetospheric Multiscale mission. show that Buneman waves and beam modes cause efficient fast thermalization electron jet irreversible phase mixing, during which kinetic energy is transferred into thermal energy. Our results in presence highly turbulent, plays an important role heating.
Abstract The energy of turbulence in the universe, which cascades from large fluid scales to small kinetic scales, is believed be dissipated through conversion thermal or nonthermal energy. However, identifying dissipation processes and measuring rate remain challenging. Based on unprecedented high-quality measurements space plasma by Magnetospheric Multiscale mission, we propose a novel approach measure scale-dependent spectrum between fluctuating electromagnetic found show positive bulge...
Abstract Ionospheric ions (mainly H + , He and O ) escape from the ionosphere populate Earth's magnetosphere. Their thermal energies are usually low when they first ionosphere, typically a few electron volt to tens of volt, but energized in their journey through The ionospheric population is variable, it makes significant contributions magnetospheric mass density key regions where magnetic reconnection at work. Solar wind—magnetosphere coupling occurs primarily via reconnection, plasma...
Abstract When the interplanetary magnetic field (IMF) is strongly northward, a boundary layer that contains considerable amount of plasma magnetosheath origin often observed along and earthward low‐latitude magnetopause. Such preexisting layer, with higher density than in adjacent magnetosphere, reduces local Alfvén speed allows Kelvin–Helmholtz (KH) instability to grow more strongly. We employ three‐dimensional fully kinetic simulation model an event by Magnetospheric Multiscale (MMS)...
Abstract Although the effects of magnetic reconnection in magnetospheres can be observed at planetary scales, is initiated electron scales a plasma. Surrounding diffusion region, there an Ion‐Decoupling Region (IDR) size ion length (inertial and gyroradius). Reconnection Earth's magnetopause often includes cold magnetospheric (few tens eV), hot (10 keV), magnetosheath (1 keV) ions, with different gyroradius scales. We report observations subregion inside IDR population (∼15 km) where ions...
Abstract The Magnetospheric Multiscale (MMS) spacecraft encounter an electron diffusion region (EDR) of asymmetric magnetic reconnection at Earth’s magnetopause. EDR is characterized by agyrotropic velocity distributions on both sides the neutral line. Various types plasma waves are produced in and near EDR. Here we report large-amplitude Bernstein (EBWs) electron-scale boundary Hall current reversal. finite gyroradius effect outflow electrons generates crescent-shaped distributions, which...
Abstract At the Earth's dayside magnetopause, a cold ion population of ionospheric or plasmasphere origin is commonly observed at magnetospheric side. In this study we use 2.5D Particle‐in‐Cell simulation to investigate energization ions in separatrix near X‐line and escape process. And identify observation events made by Magnetospheric Multiscale mission, which provide evidence acceleration mechanism separatrix. We track trajectories conduct an analysis, discovering that exhibit positive...
Extreme climate events significantly impact vegetation ecosystems in dry regions, particularly areas adjacent to the northern foothills of Yinshan Mountain (NYSM). However, there remains limited understanding how responds such events. Analyzing response regions drought is beneficial for protection and restoration ecosystem. This study analyzes spatiotemporal variation characteristics extreme NDVI. By employing correlation analysis geographic detectors, it explores NDVI The findings indicate...
Plasma waves are widely observed in the Earth's space, playing a crucial role heating and accelerating plasmas, cascading turbulent energy, facilitating energy conversion during magnetic reconnection. Simulation studies have shown that high-speed electron beams can excite various plasma under different environments. High-speed flows (HSEFs) mainly near X-line drive types of instabilities waves, affecting electron-scale dynamics. We conducted systematic statistical study...
Mars does not possess an intrinsic magnetic field to shield it from solar wind invasion. Therefore, the ionized particles in top atmosphere can thus interact with and escape into interplanetary space. The convection electric ESW accelerate oxygen ions Martian ionosphere pick them up These pickup form important channel, namely "ion plume", due their large gyro radius compared radius. China's first mission, Tianwen-1 spacecraft, observed strong ion plume flux at its apoapsis ~4 RM. We found...
The reconnection electric field is an essential part in magnetic reconnection. In 2D symmetric magnetotail reconnection, the balance of this analyzed from generalized Ohm’s law or electron momentum equation, showing that off-diagonal pressure term plays important role diffusion region which electrons break frozen-in condition. Previous studies have attributed to agyrotropic meandering electrons. Here, we examine gradient (stress) tensor Vlasov enabling a direction evaluation...
Magnetic shear and flow shears form across Earth’s magnetopause when shocked solar winds around Earth. Previous studies have shown that these two kinds of can similarly affect reconnection. However, a direct investigation to evaluate their relative importance is lacking. In this study, we focus on simultaneous reconnection observed by Magnetospheric Multiscale mission (MMS) Time History Events Macroscale Interactions during Substorms (THEMIS) spacecraft at different locations...
Abstract Alfvén waves play a significant role in solar coronal heating, wind acceleration, and Alfvénic turbulence formation. As fundamental process, magnetic reconnection has long been credited as crucial source of waves. However, how triggers remains unclear. Here, employing high-resolution simulations three-dimensional bursty interchange the corona, we unveil that are spontaneously excited reconnecting current sheet propagate bidirectionally, mainly along unreconnected fields. Generated...
Abstract High‐speed electron flows (HSEFs) play a crucial role in the energy dissipation and conversion processes within terrestrial magnetosphere can drive various types of plasma waves instabilities, affecting electron‐scale dynamics. The existence, spatial distribution, general properties HSEFs Earth magnetotail are still unknown. In this study, we conduct comprehensive survey magnetotail, utilizing NASA's Magnetospheric Multiscale (MMS) mission observations from 2017 to 2021. A total 642...
We previously demonstrated that an anti-caries DNA vaccine intranasally administered with recombinant flagellin protein as a mucosal adjuvant enhanced salivary IgA response and conferred better protection against caries. However, the relatively weak immunogenicity of vaccines necessity for large quantity antigens remain significant challenges. Here, we fused derived from E. coli (KF) target antigen PAc containing A-P fragment S. mutans (rPAc) to produce single (KF-rPAc). The abilities...