A5048579498- Geology and Paleoclimatology Research
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Atmospheric chemistry and aerosols
- Geomagnetism and Paleomagnetism Studies
- Isotope Analysis in Ecology
- Tree-ring climate responses
- Air Quality and Health Impacts
- Archaeology and ancient environmental studies
- Geological and Geophysical Studies
- Aeolian processes and effects
- Landslides and related hazards
- Geological and Geochemical Analysis
- Atmospheric aerosols and clouds
- Climate variability and models
- Plant Water Relations and Carbon Dynamics
- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Toxic Organic Pollutants Impact
- Geochemistry and Geologic Mapping
- Remote Sensing and Land Use
- Plant Ecology and Soil Science
- Groundwater and Isotope Geochemistry
Institute of Earth Environment
2016-2025
Chinese Academy of Sciences
2016-2025
Beijing Forestry University
2025
Northwest Normal University
2025
Beijing Normal University
2006-2025
China Tourism Academy
2025
State Key Laboratory of Loess and Quaternary Geology
2007-2024
Xi'an Jiaotong University
2010-2024
Shaanxi Institute of Zoology
2022-2024
Chengdu Medical College
2024
Oxygen isotope records of five stalagmites from Hulu Cave near Nanjing bear a remarkable resemblance to oxygen Greenland ice cores, suggesting that East Asian Monsoon intensity changed in concert with temperature between 11,000 and 75,000 years before the present (yr. B.P.). Between 30,000 yr. B.P., timing changes monsoon, as established 230Th dates, generally agrees Ice Sheet Project Two (GISP2) core, which supports GISP2's chronology this interval. Our record links North Atlantic climate...
A 5-year-resolution absolute-dated oxygen isotope record from Dongge Cave, southern China, provides a continuous history of the Asian monsoon over past 9000 years. Although broadly follows summer insolation, it is punctuated by eight weak events lasting approximately 1 to 5 centuries. One correlates with "8200-year" event, another collapse Chinese Neolithic culture, and most North Atlantic ice-rafting events. Cross-correlation decadal- centennial-scale atmospheric carbon-14 shows that some,...
Significance Exceedingly high levels of fine particulate matter (PM) occur frequently in China, but the mechanism severe haze formation remains unclear. From atmospheric measurements two Chinese megacities and laboratory experiments, we show that oxidation SO 2 by NO occurs efficiently aqueous media under polluted conditions: first, during 1952 London Fog via in-cloud oxidation; second, on PM with NH 3 neutralization China. We suggest effective mitigation is achievable intervening sulfate...
Thorium-230 ages and oxygen isotope ratios of stalagmites from Dongge Cave, China, characterize the Asian Monsoon low-latitude precipitation over past 160,000 years. Numerous abrupt changes in 18O/16O values result tropical subtropical driven by insolation millennial-scale circulation shifts. The Last Interglacial lasted 9.7 +/- 1.1 thousand years, beginning with an (less than 200 years) drop 129.3 0.9 years ago ending 300 rise 119.6 0.6 ago. start coincides measures full interglacial...
Abstract The magnetic susceptibility of loess and paleosols in central China represents a proxy climate index closely related to past changes precipitation vegetation, thus summer monsoon intensity. Time series constructed for three loess-paleosol sequences the southern part Chinese Loess Plateau document history variation during last 130,000 yr. They correlate with oxygen isotope record stages 1 5 deep-sea sediments. Soils were forming intervals strong monsoon, whereas units deposited at...
Aerosol samples of PM2.5 and PM10 in a period intensive haze−fog (HF) events were collected to investigate the chemical characteristics air pollution Beijing. The quality HF episodes was much worse than that nonhaze−fog (NHF) days. concentrations elements water-soluble (WS) ions (K+, SO42-, NO3-) more 10 times higher those NHF Most species secondary (NH4+, showed significant difference between from westerly direction (HFW) southerly (HFS). HFS HFW, other lower HFW. sources areas on regional...
Two atmospheric circulation systems, the mid-latitude Westerlies and Asian summer monsoon (ASM), play key roles in northern-hemisphere climatic changes. However, variability of Asia their relationship to ASM remain unclear. Here, we present longest highest-resolution drill core from Lake Qinghai on northeastern Tibetan Plateau (TP), which uniquely records both since 32 ka, reflecting interplay these two systems. These document anti-phase for glacial-interglacial glacial millennial...
Abstract. Continuous measurements of atmospheric organic and elemental carbon (OC EC) were taken during the high-pollution fall winter seasons at Xi'an, Shaanxi Province, China from September 2003 through February 2004. Battery-powered mini-volume samplers collected PM2.5 samples daily PM10 every third day. Samples also obtained plumes residential coal combustion, motor-vehicle exhaust, biomass burning sources. These analyzed for OC/EC by thermal/optical reflectance (TOR) following...
Estimates of atmospheric dust deposition to five Asian/Pacific regions indicate that ∼800 Tg Chinese desert is injected into the atmosphere annually; about 30% this redeposited onto deserts, 20% transported over regional scales, primarily within continental China. The remaining 50% subject long‐range transport Pacific Ocean and beyond. Elemental tracers based on several dustderived elements (Al, Fe, Mg, Sc) reveal high‐frequency variability in contributions western sources versus northern...
Abstract The Chinese loess-paleosol sequence constitutes an important record of variations in Asian monsoon climate over the past 2.4 myr. Magnetic susceptibility loess and paleosols has been used as a proxy for summer intensity, while median grain size regarded measure strength winter winds that were responsible most dust transport. However, is only approximate index because both have modified, to various degrees, by weathering processes produced pedogenic clay. quartz component largely...