A5023925539- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Earthquake Detection and Analysis
- Solar Radiation and Photovoltaics
- Climate variability and models
- Geomagnetism and Paleomagnetism Studies
- Radioactive contamination and transfer
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Astro and Planetary Science
- Tree-ring climate responses
- Air Quality and Health Impacts
- Plant nutrient uptake and metabolism
- Meteorological Phenomena and Simulations
- Calibration and Measurement Techniques
- Market Dynamics and Volatility
- Statistical and numerical algorithms
- Advanced Aircraft Design and Technologies
- GNSS positioning and interference
- Soil Carbon and Nitrogen Dynamics
- Gas Dynamics and Kinetic Theory
- Biocrusts and Microbial Ecology
Nanjing University of Information Science and Technology
2013-2025
China Meteorological Administration
2013-2023
University of Information Science
2021-2022
Nanjing University
2021-2022
Chinese Academy of Sciences
2005-2018
China University of Geosciences
2018
Institute of Atmospheric Physics
2018
Chinese Academy of Meteorological Sciences
2018
University of Chinese Academy of Sciences
2017
Abstract Black carbon aerosol plays a unique and important role in Earth's climate system. is type of carbonaceous material with combination physical properties. This assessment provides an evaluation black‐carbon forcing that comprehensive its inclusion all known relevant processes quantitative providing best estimates uncertainties the main terms: direct solar absorption; influence on liquid, mixed phase, ice clouds; deposition snow ice. These effects are calculated models, but when...
Abstract. We report on the AeroCom Phase II direct aerosol effect (DAE) experiment where 16 detailed global models have been used to simulate changes in distribution over industrial era. All estimated radiative forcing (RF) of anthropogenic DAE, and taken into account sulphate, black carbon (BC) organic aerosols (OA) from fossil fuel, biofuel, biomass burning emissions. In addition several simulated DAE nitrate influenced secondary (SOA). The model all-sky RF total has a range −0.58 −0.02...
<strong class="journal-contentHeaderColor">Abstract.</strong> This paper evaluates the current status of global modeling organic aerosol (OA) in troposphere and analyzes differences between models as well observations. Thirty-one chemistry transport (CTMs) general circulation (GCMs) have participated this intercomparison, framework AeroCom phase II. The simulation OA varies greatly terms magnitude primary emissions, secondary (SOA) formation, number species used (2 to 62), complexity...
Abstract. Aerosols have important impacts on air quality and climate, but the processes affecting their removal from atmosphere are not fully understood poorly constrained by observations. This makes modelled aerosol lifetimes uncertain. In this study, we make use of an observational constraint provided radionuclide measurements investigate causes differences within a set global models. During Fukushima Dai-Ichi nuclear power plant accident March 2011, radioactive isotopes cesium-137 (137Cs)...
Abstract. This research incorporates the correlated k distribution BCC-RAD radiation model into climate BCC_AGCM2.0.1 and examines change in simulation by implementation of new algorithm. It is shown that both clear-sky fluxes cloud radiative forcings (CRFs) are improved. The modeled atmospheric temperature specific humidity also improved due to changes heating rates, which most likely stem from revised treatment gaseous absorption. Subgrid variability, including vertical overlap fractional...
Abstract. We report on the AeroCom Phase II direct aerosol effect (DAE) experiment where 15 detailed global models have been used to simulate changes in distribution over industrial era. All estimated radiative forcing (RF) of anthropogenic DAE, and taken into account sulphate, black carbon (BC) organic aerosols (OA) from fossil fuel, biofuel, biomass burning emissions. In addition several simulated DAE nitrate influenced secondary (SOA). The model all-sky RF total has a range −0.58 −0.02 W...
Abstract Studies commonly assumed that variations in ionospheric conductance were insignificant and proposed vorticities can be a reliable proxy or diagnostic for field‐aligned currents (FACs). We propose complete method measuring FACs using data from the Super Dual Auroral Radar Network radar Defense Meteorological Satellite Program. In our method, are determined by three terms. The first term is referred to as magnetospheric‐origin FACs, while second third terms known ionospheric‐origin...
Abstract In this study, the Empirical Mode Decomposition algorithm (EMD) and Long Short Term Memory neural network (LSTM) are combined into an EMD‐LSTM model, to predict variation of >2 MeV electron fluxes 1 day ahead. Input parameters include Pc5 power, AP, AE, Kp, >0.6 MeV, historical flux values, used for predictions. All time resolution daily integral values. As compared prediction results model with other classical models, show that ahead efficiency possesses a 0.80, highest can...
Abstract It is traditionally assumed that upward currents correspond to electron precipitation, suggesting precipitation should align with Region 2 (R2) Field‐Aligned Currents (FACs) in the dawn sector and 1 (R1) FACs dusk sector. However, some previous studies have indicated systematic discrepancies between locations of auroral R1/R2 FACs, a topic remains controversial lacks an adequate explanation. This study aims investigate explain these differences. We conducted detailed analysis...
Abstract We used an online aerosol‐climate model (BCC_AGCM2.0_CUACE/Aero) to simulate effective radiative forcing and climate response changes in the concentrations of short‐lived climatic pollutants (SLCPs), including methane, tropospheric ozone, black carbon, for period 2010–2050 under Representative Concentration Pathway scenarios (RCPs) 8.5, 4.5, 2.6. Under these three scenarios, global annual mean were 0.1, −0.3, −0.5 W m −2 , respectively. RCP change SLCPs caused significant increases...
Abstract. F10.7, the solar flux at a wavelength of 10.7 cm (F10.7), is often used as an important parameter input in various space weather models and also key for measuring strength activity levels. Therefore, it valuable to study forecast F10.7. In this paper, temporal convolutional network (TCN) approach deep learning predict daily value The F10.7 series from 1957 2019 are used. data during 1957–1995 adopted training dataset, 1996–2008 (solar cycle 23) validation 2009–2019 24) test...
A field experiment was conducted during the 2010 to 2011 winter wheat–growing season understand soil respiration (Rs ), nitrification, and denitrification rates in wheat farmland under no-tillage (NT) treatment with rice straw incorporation. The experimental treatments include NT, NT covers on surface (NTS), conventional tillage (CT), CT incorporation (CTS). No-tillage did not change seasonal patterns of Rs , gross nitrification (Gn), (D) compared CT. Compared treatment, NTS, CTS...
Abstract. This paper evaluates the current status of global modeling organic aerosol (OA) in troposphere and analyzes differences between models as well observations. Thirty-one chemistry/transport general circulation have participated this intercomparison, framework AeroCom phase II. The simulation OA varies greatly terms magnitude primary emissions, secondary (SOA) formation, number species used (2 to 62), complexity parameterizations (gas-particle partitioning, chemical aging, multiphase...
Abstract During the recovery of a magnetic storm, relativistic electrons at megaelectron volt energy from outer radiation belt will be enhanced geosynchronous orbit. In particular, >2‐MeV could penetrate surface satellites and accumulate inside. After long period, such an electron flux effect cause to unable function properly or fail completely. Unlike previous prediction models focusing mainly on forecasting daily value, we have developed hourly model learn more detailed changes....
Abstract The ionospheric field‐aligned current (FAC) consists of three components related to vortices and gradients Pedersen Hall conductances, with the first term being magnetospheric origin latter two (Eq. 1). We calculate each them between 2010 2016 using line‐of‐sight velocity data from Super Dual Auroral Radar Network radar auroral electron precipitation Defense Meteorological Satellite Program. Then, we investigate contribution FAC component, as well relationship component activity....
Abstract The effect of radial interplanetary magnetic field (IMF ) has been ignored in the solar wind‐magnetosphere‐ionosphere (S‐M‐I) coupling. We present a statistical study IMF Bx effects on Heppner‐Maynard Boundary (HMB) midnight latitude calculated from SuperDARN measurements between January 2002 and December 2017. HMB represents equatorward extent ionospheric convection pattern can be used as proxy for boundary auroral oval. That is, expands toward lower when level S‐M‐I coupling is...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Weather. 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]A Prediction model of relativistic electrons geostationary orbit using EMD-LSTM network geomagnetic indicesAuthorsHuaZhangiDHaoranXuGuangShuaiPengYe...
Abstract. Aerosols have important impacts on air quality and climate, but the processes affecting their removal from atmosphere are not fully understood poorly constrained by observations. This makes modelled aerosol lifetimes uncertain. In this study, we make use of an observational constraint provided radionuclide measurements investigate causes differences within a set global models. During Fukushima Dai-Ichi nuclear power plant accident March 2011, radioactive isotopes cesium-137 (137Cs)...