A5070213604- Climate variability and models
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Arctic and Antarctic ice dynamics
- Plant Water Relations and Carbon Dynamics
- Climate change and permafrost
- Tropical and Extratropical Cyclones Research
- Aeolian processes and effects
- Air Quality Monitoring and Forecasting
- Geophysics and Gravity Measurements
- Landslides and related hazards
- Soil, Finite Element Methods
- GNSS positioning and interference
- Oceanographic and Atmospheric Processes
- Methane Hydrates and Related Phenomena
- Machine Learning and Data Classification
- Marine and coastal ecosystems
- Hydraulic Fracturing and Reservoir Analysis
- Water Quality and Pollution Assessment
- Aquatic Ecosystems and Phytoplankton Dynamics
Institute of Atmospheric Physics
2015-2024
Chinese Academy of Sciences
2015-2024
University of Chinese Academy of Sciences
2024
Zhejiang University of Technology
2023
China University of Petroleum, Beijing
2023
National Institute for Environmental Studies
2003-2010
Abstract We investigate the rapid formation and evolutionary mechanisms of an extremely severe persistent haze episode that occurred in northern China during winter 2015 using comprehensive ground vertical measurements, along with receptor dispersion model analysis. Our results indicate life cycle a typically consists four stages: (1) initiated by sudden changes meteorological parameters synchronous increases most aerosol species, (2) evolution relatively constant variations secondary...
Abstract China implemented strict emission control measures in Beijing and surrounding regions to ensure good air quality during the 2014 Asia-Pacific Economic Cooperation (APEC) summit. We conducted synchronous aerosol particle measurements with two mass spectrometers at different heights on a meteorological tower urban investigate variations particulate composition, sources size distributions response controls. Our results show consistently large reductions secondary inorganic (SIA) of...
Traversing the Qinghai–Tibetan Plateau, Sichuan–Tibet Railway is by far most difficult railway project in world. The Plateau features active crustal dynamics on earth, strongest coupling effects of endogenic and exogenic dynamics, environment sensitive to global climate change. area characterized extremely cold climate, high elevation relief, seismic intensity, geothermal activity, tectonic stress. Consequently, threat various disaster risks ever-present at different stages entire life cycle...
Abstract. The mitigation of air pollution in megacities remains a great challenge because the complex sources and formation mechanisms aerosol particles. 2014 Asia-Pacific Economic Cooperation (APEC) summit Beijing serves as unique experiment to study impacts emission controls on composition, size distributions, oxidation properties. Herein, high-resolution time-of-flight mass spectrometer was deployed urban for real-time measurements size-resolved non-refractory submicron (NR-PM1) species...
Abstract. The megacity of Beijing has experienced frequent severe fine particle pollution during the last decade. Although sources and formation mechanisms aerosol particles have been extensively investigated on basis ground measurements, real-time characterization composition above urban canopy in is rare. In this study, we conducted measurements non-refractory submicron (NR-PM1) at 260 m 325 meteorological tower (BMT) from 10 October to 12 November 2014, by using an chemical speciation...
Abstract Organic aerosol (OA) constituted a large fraction of particles during severe haze episodes in winter northern China, yet our understanding its physical and chemical processing was limited. Here we investigate the sources processes OA four 2016 using high‐resolution mass spectrometer. The PM 2.5 reached 400 μg/m 3 severest episode (Ep1) when Beijing issued red alert implemented strict emission controls. Our results showed that secondary (SOA) dominated on average accounting for...
Abstract. We conducted the first real-time continuous vertical measurements of particle extinction (bext), gaseous NO2, and black carbon (BC) from ground level to 260 m during two severe winter haze episodes at an urban site in Beijing, China. Our results illustrated four distinct types profiles: (1) uniform distributions (37 % time) with differences less than 5 %, (2) higher values lower altitudes (29 %), (3) (16 (4) significant decreases heights ∼ 100–150 (14 %). Further analysis...
The changes in breakup time of the Antarctic polar vortex years 1980–2004 are examined using output chemistry climate model (CCM) calculations, data from National Centers for Environmental Prediction/the Center Atmospheric Research (NCEP/NCAR) Reanalysis, and European Medium‐Range Weather Forecasts Reanalysis (ERA40). CCM used this study is Climate System Research/National Institute Studies (CCSR/NIES). calculations performed with two ensemble members REF1 scenario validation (CCMVal) one...
Abstract. The rapid warming of the Arctic, driven by glacial and sea ice melt, poses significant challenges to Earth's climate, ecosystems, economy. Recent evidence indicates that snow-darkening effect (SDE), caused black carbon (BC) deposition, plays a crucial role in accelerated warming. However, high-resolution simulations assessing impacts from properties snowpack land–atmosphere interactions on changes surface energy balance Arctic BC remain scarce. This study integrates Snow, Ice,...
Abstract After urban lakes are divided into “ponds”, they more affected by human beings and prone to eutrophication. In this paper, five “ponds” in a university park Nanchang were collected as research objects, samples of lake water quality sediment, well aquatic plants animals on ecological floating beds collected. Relevant indicators such ammonia nitrogen, TP sediment phosphorus analyzed the water, relationship between form analysis eutrophication was discussed. Results: On surface, severe...
The rapid warming of the Arctic, driven by glacial and sea ice melt, poses significant challenges to Earth's climate, ecosystems, economy. Recent evidence indicates that snow-darkening effect (SDE), caused black carbon (BC) deposition, plays a crucial role in accelerated warming. However, high-resolution simulations assessing impacts from properties snowpack land‒atmosphere interactions on changes surface energy balance Arctic BC remain scarce. This study integrates Snow, Ice,...
The Tibetan Plateau (TP) greatly affects climate and environment systems over Asian through the lower atmospheric mass/energy transfer processes. However, processes were not clearly understood due to limitation of observational data, especially TP mountain regions. Observations model simulations suggested a distinguished land-air vertical structure regions, which largely differ from those plateau flat An inhomogeneous distributions are also found in exchange whole new high-resolution dataset...
Abstract. Quantifying the transport flux (TF) of atmospheric pollutants plays an important role in understanding causes air pollution and making decisions regarding prevention control regional pollution. In this study, mixing layer height (MLH) wind profile were measured by a ceilometer Doppler radar, respectively, characteristics dilution capability analyzed using these two datasets. The ventilation coefficient (VC) appears to be highest spring (3940±2110 m2 s−1) lower summer (2953±1322...
Abstract As the second-largest shifting sand desert worldwide, Taklimakan Desert (TD) represents typical aeolian landforms in arid regions as an important source of global dust aerosols. It directly affects ecological environment and human health across East Asia. Thus, establishing a comprehensive climate observation network for field research TD region is essential to improve our understanding meteorology environment, assess its impact, mitigate potential environmental issues, promote...
High ozone concentrations (70–80 ppb) were found from late afternoon to midnight at sites ca. 5000 m above sea level (m.a.s.l.) on Mt. Everest. Observational data suggest that katabatic wind Everest was “pumping down” ozone‐rich air the upper troposphere. Numerical modelling demonstrates cooling of glaciers and snow northern mountain slopes heating valley surface play important roles in forming winds accelerating vertical exchange between atmosphere air. These results “pump‐down” mechanism...
Abstract Despite extensive studies for characterization of aerosol chemistry near ground level, long‐term vertical particle composition in Beijing is very limited. In this work, non‐refractory submicron (NR‐PM 1 ) species were simultaneously measured at level and 260 m on a meteorological tower from 14 October 2014 to 18 January 2015 using two mass spectrometers. Our results showed overall lower concentrations NR‐PM by 2%–36% than both heating non‐heating seasons, also larger gradients...
As the most prominent feature of polar stratosphere, vortex results in widespread changes climate system, especially ozone variation. In this study, linkage between and depletion Antarctic stratosphere during period 1979–2016 is investigated; we calculated averaged total column within based on edge (−28.8 PVU PV contour) instead geographical region defined by latitude longitude. Results from spatial patterns suggest that morphological can impact horizontal distribution experiences a severe...
To better understand the local wind systems in Himalayas, and related atmospheric parameters were observed Rongbuk Valley on northern slope of Mt. Everest, during HEST2006 campaign, from May 29 to June 29, 2006. Data analysis a simple numerical simulation show that dominating down‐valley flow this valley is mainly formed by thermally driven winds, “valley wind”, “mountain wind” “glacier wind”. The vertical air motion composed descending morning midnight an ascending for rest day, with...
Based on multiresource high-resolution in situ and satellite merged observations along with model simulations from the Coordinated Regional Climate Downscaling Experiment (CORDEX), this study first investigated historical changes extreme temperature precipitation during period of 1979–2018 areas Sichuan-Tibet Railway, then projected future frequency intensity under RCP (Representative Concentration Pathway) 4.5 8.5 scenarios. This paper is expected to enhance our understanding spatiotemporal...
Atmospheric ducts could disturb radar detection and radio communication in the Arctic risk increasing human activities under warming. It is an urgent need to understand atmospheric Arctic, with distinct systems environment. This study attempts analyze surface over Svalbard, as a critical region Ocean, discuss relation oceanic conditions, based on observation reanalysis data. The results show occurrence of 12.6 percent, mean strength 1.30 MU, depth 13 m for duct Svalbard winter from December...
Based on the observational data from HEST2006 campaign in Rongbuk Valley northern slope of Mt. Everest, June, 2006, variation surface wind and possible impact South Asian summer monsoon (SASM) are analyzed. During observation campaign, SASM experienced a break stage an active middle late respectively. The measured is closely related to evolution, with strong down‐valley coinciding weak stage. It suggested that Everest can be attributed change radiation conditions.