A5059370805- Atmospheric chemistry and aerosols
- Cryospheric studies and observations
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Aeolian processes and effects
- Climate change and permafrost
- Microstructure and mechanical properties
- Marine and coastal ecosystems
- Planetary Science and Exploration
- Metal and Thin Film Mechanics
- Aluminum Alloys Composites Properties
- Winter Sports Injuries and Performance
- Offshore Engineering and Technologies
- Geological Studies and Exploration
- Titanium Alloys Microstructure and Properties
- Meteorological Phenomena and Simulations
- Arctic and Antarctic ice dynamics
- Radioactivity and Radon Measurements
- Toxic Organic Pollutants Impact
- Advanced materials and composites
- Machine Learning in Materials Science
- CO2 Sequestration and Geologic Interactions
- High Altitude and Hypoxia
Lanzhou University
2020-2024
Taiyuan University of Science and Technology
2023-2024
Tianjin University
2022
Shenyang Jianzhu University
2018
Abstract Light‐absorbing particles in snow can significantly reduce the albedo. Quantification of influence black carbon (BC), one most important light‐absorbing particles, on albedo is essential for understanding budgets solar radiation snow‐covered areas. We measured BC concentration at 28 sites and 18 a vast region across northwestern China January 2018. The was wide range 40–1,850 ng g −1 . presence reduced by 0.01–0.20 visible wavelength band (400–750 nm). reduction differed from to...
Abstract. Mineral dust is a major light-absorbing aerosol, which can significantly reduce snow albedo and accelerate snow/glacier melting via wet dry deposition on snow. In this study, three scenarios of internal mixing in ice grains were analyzed theoretically by combining asymptotic radiative transfer theory (core–shell) Mie to evaluate the effects absorption coefficient semi-infinite snowpack consisting spherical grains. general, was substantially reduced at wavelengths <1.0 µm...
Abstract. This study utilizes the computer-controlled scanning electron microscope software IntelliSEM-EPASTM, combined with K-means cluster analysis and manual experience, reports for first time that dust in snow accumulation from a typical industrial city China is mainly composed of kaolinite-like (36 %), chlorite-like (19 quartz-like (15 illite-like (14 hematite-like (5 clay-minerals-like (4 %) other components. It was also found size distribution aspect ratio did not undergo significant...
Abstract. Water-soluble organic carbon (WSOC) in the cryosphere can significantly influence global cycle and radiation budget. However, WSOC snowpack has received little scientific attention to date. This study reports fluorescence characteristics, absorption properties, radiative effects of based on 34 snow samples collected from sites northeastern China. A significant degree regional variability is found, with concentrations ranging 0.5±0.2 5.7±3.7 µg g−1 (average concentration: 3.6±3.2...
Abstract. Snow is the most reflective natural surface on Earth and consequently plays an important role in Earth's climate. Light-absorbing particles (LAPs) deposited snow can effectively decrease albedo, resulting positive radiative forcing. In this study, we used remote-sensing data from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) Snow, Ice, Aerosol Radiative (SNICAR) model to quantify reduction albedo due LAPs before validating correcting against situ observations. We...
Abstract. When black carbon (BC) is mixed internally with other atmospheric particles, the BC light absorption effect enhanced. This study explicitly resolved optical properties of coated in snow based on core / shell Mie theory and Snow, Ice, Aerosol Radiative (SNICAR) model. Our results indicated that coating enhances reduction albedo by a factor ranging from 1.1–1.8 for nonabsorbing 1.1–1.3 an absorbing shell, depending concentration, grain radius, ratio. We developed parameterizations...
Abstract. Water-soluble organic carbon (WSOC) in the cryosphere has an important impact on biogeochemistry cycling and snow–ice surface energy balance through changes albedo. This work reports chemical characterization of WSOC 28 representative snowpack samples collected across a regional area northern Xinjiang, northwestern China. We employed multimodal analytical chemistry techniques to investigate both bulk molecular-level composition its optical properties, informing follow-up radiative...
Abstract We quantified the combined effects of mineral dust nonsphericity and size on snow albedo reduction using MOPSMAP (Modeled optical properties ensembles aerosol particles) package SAMDS (Spectral Albedo Model for Dirty Snow) with consideration from Sahara, Greenland, San Juan Mountains, Tibetan Plateau. Results indicate that dust‐induced decreases by up to 30% as effective radii particles increase in 1–5 μm. Nonspherical enhances relative spherical 20%. Stronger enhancements are...
In this study, the total radiative effect of black carbon (BC) in both atmosphere and seasonal snowpack across snow-covered area has been investigated over Northern Hemisphere.
Abstract. The Taklamakan Desert (TD) is a major source of mineral dust emissions into the atmosphere. These particles have ability to darken surface snow on surrounding high mountains after deposition, significantly impacting regional radiation balance. However, previous field measurements been unable capture effects severe storms accurately, and their representation scales has inadequate. In this study, we propose modified remote-sensing approach that combines data from Moderate Resolution...
Abstract Water‐soluble organic carbon (WSOC) deposited in ambient snowpack play key roles regional cycle and surface energy budget, but the impacts of photo‐induced processes on its optical chemical properties are poorly understood yet. In this study, melted samples seasonal snow collected from northern Xinjiang, northwestern China, were exposed to ultraviolet (UV) radiation investigate photolytic transformations WSOC. Molecular characteristics composition WSOC brown (BrC) constituents...
Abstract. Mineral dust is a major light-absorbing aerosol, which can significantly reduce snow albedo and accelerate snow/glacier melting via wet dry deposition on snow. In this study, three scenarios of internal mixing in ice grains were analyzed theoretically by combining asymptotic radiative transfer theory (core/shell) Mie to evaluate the effects absorption coefficient albedo. general, was substantially reduced at wavelengths
Abstract The snow physical parameters are closely related to the sizes, shapes, and chemical composition of light‐absorbing particles (LAPs). By utilizing a computer‐controlled scanning electron microscope software called IntelliSEM‐EPAS TM , we first report measured size‐resolved concentration soot, dust, fly ash in fresh (wet) aged (dry deposition) samples collected at an industrial city China during after snowfall intervals 6–8 days. Due wet scavenging by seasonal snow, soot dust absorbed...
Abstract Black carbon in snow (BCS) is a crucial parameter Earth System modeling, as it influences global radiative balance. Here, simulated BCS from Coupled Model Intercomparison Project Phase 5 and 6 (CMIP5 CMIP6) that provided model output were evaluated. In comparison with observations, CMIP5/6 models successfully reproduced long‐term historical trends linked to human activities, but struggled capturing decadal variability caused by natural climate variability. CMIP6 NorESM2‐MM,...
Abstract. Although water-soluble organic carbon (WSOC) in the cryosphere can significantly influence global cycle and radiation budget, WSOC snowpack has received little scientific attention to date. This study reports fluorescence characteristics, absorption properties, radiative effects of based on 34 snow samples collected from sites northeastern China. Sampling were divided into five groups, comprising southeastern Inner Mongolia (SEIM), (NEIM), south China (SNC), north (NNC), Changbai...
With a vast territory and seven climate zones, China's urbanization is constantly improving while building energy conservation emission reduction are facing severe challenges, especially in cold areas. In Liaoning Province, urban public buildings rural residential consume huge amounts of energy. According to the characteristics Liaoning, "passive technology advanced, active second" best choice for saving reduction. Taking Sino-German Energy Conservation Demonstration Center Shenyang Jianzhu...
Aerosol particles of Black carbon in the snow cause a significant decrease albedo spectrum snow, which results climatic radiation changes seriously, and will delay or advance melting time, badly affecting characteristics surface runoff processes water cycle arid region. This problem is receiving increasing attention ecological hydrology issues The data field measurement were obtained by ASD spectrometer, Snow Folk HR-1024 external radiometer. SNICAR model was used to simulate spectral under...