A5081514270- Climate variability and models
- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Hydrology and Watershed Management Studies
- Hydrology and Drought Analysis
- Cryospheric studies and observations
- Orbital Angular Momentum in Optics
- Remote Sensing and Land Use
- Geology and Paleoclimatology Research
- Digital Holography and Microscopy
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- Traffic control and management
- Traffic Prediction and Management Techniques
- Transportation Planning and Optimization
- Flood Risk Assessment and Management
- Welding Techniques and Residual Stresses
- Icing and De-icing Technologies
- Precipitation Measurement and Analysis
- Microfluidic and Bio-sensing Technologies
- Rangeland Management and Livestock Ecology
- Ecology and Vegetation Dynamics Studies
- Metal Alloys Wear and Properties
- Optical Polarization and Ellipsometry
- Near-Field Optical Microscopy
Chengdu University of Information Technology
2018-2025
Hong Kong University of Science and Technology
2024
University of Hong Kong
2024
Yunnan University
2024
Materials Science & Engineering
2024
Shanghai University
2024
Lanzhou University
2021-2023
North China Electric Power University
2023
Yanshan University
2023
Sichuan International Studies University
2023
Abstract During 1961–2012, the regional average annual potential evapotranspiration (PET) of Southwest China (SWC) and four subregions (named as SR1, SR2, SR3, SR4) showed different decreases (excluding SR3); while breakpoint analysis suggested that PET changes (i.e., sign magnitude) have shifted. Based on a group sensitivity experiments with Penman‐Monteith equation new separating method, contributions each climate factor alone net radiation, R n; mean temperature, Tave; wind speed, Wnd;...
Abstract Tibetan Plateau vortices (TPVs) are the major precipitation‐producing weather system, which dominates water supplies over TP. Serial clustering is one of basic features TPVs and closely related to atmospheric intraseasonal oscillation Through a database derived from multiple reanalysis data sets, we investigated spatiotemporal characteristics TPV (TPVC) its connection with quasi‐biweekly (QBWO). The tracks variant sets reproduced consistent for TPVC. revealed that TPVC primarily...
Abstract Ongoing global warming has a strong influence on regional hydrological cycles. The upper reaches of the Yangtze River (UYR) are highly vulnerable to extreme droughts and floods, but lack long‐term streamflow observations limited our understanding influences. Here, we establish an annually resolved absolutely dated tree‐ring oxygen ( δ 18 O) isotope chronology use it reconstruct summer history UYR between 1260 2017. experienced 79 floods 107 over this period. We found trend toward...
Abstract. As the theoretical upper bound of evapotranspiration (ET) or water use by ecosystems, potential ET (PET) has always been widely used as a variable linking variety disciplines, such climatology, ecology, hydrology, and agronomy. However, substantial uncertainties exist in current PET methods (e.g., empiric models single-layer models) datasets because unrealistic configurations land surface unreasonable parameterizations. Therefore, this study comprehensively considered interspecific...
Redistributing the transverse energy flow in focal plane of a tightly focused radially polarized optical field is described. We develop from theory generalized analytical model for calculating distributions electromagnetic and Poynting vector laser beam superposed with an vortex. further explore redistribution by designing phase masks, including traditional annular vortex masks. Flexible control rings obtained these They provide simple solution to transport absorptive particles along certain...
The green light optimal speed advisory (GLOSA) is one of the most important applications in intelligent transportation systems. existing GLOSA methods can be used to calculate curve, by which vehicle arrive at intersection phase, for purpose reducing trip time and fuel consumption. However, it not guarantee that could with allowed maximum velocity. Therefore, this paper, augmented lagrangian genetic algorithm (ALGA) proposed searching optimized curve all possible curves, according minimal...
We propose a method to generate an optical cage using azimuthal- and radial-variant vector beams in high numerical aperture system. A new kind of beam that has polarization states is proposed demonstrated theoretically. Then, integrated analytical model calculate the electromagnetic field Poynting distributions input derived built based on diffraction theory Richards Wolf. From calculations, full polarization-controlled obtained by simply tailoring radial index polarization, uniformity U...
Abstract Global warming has a significant impact on the ecosystem of high‐altitude areas Tibetan Plateau, such as land degradation and rapid retreat glaciers. It is important to understand effects global occurring over hundreds or thousands years. However, long‐term reconstruction temperature still lacking for region Western Sichuan Plateau (WSP). In this study, we reconstructed summer (June–July) temperatures back 1383 WSP based positive correlation between standard chronology temperature....
In the context of global warming, meteorological disasters occur more frequently in various regions which exert increasing influences on human life. Snow are some natural that most seriously affect development husbandry Qinghai–Tibetan Plateau (QTP), so it is necessary to explore their spatio-temporal variations and perform comprehensive risk assessment. Based daily snow depth data set China, obtained by inversion satellite remote sensing data, variation characteristics QTP from 1980 2019...
The tight focusing properties of optical fields combining a spiral phase and cylindrically symmetric state polarization are presented. First, we theoretically analyze the mathematical characterization, Stokes parameters, Poincaré sphere representations arbitrary cylindrical vector (CV) vortex beams. Then, based on diffraction theory, derive build an integrated analytical model to calculate electromagnetic field Poynting distributions input CV calculations reveal that generalized beam can...
The low-cost production of high-purity metallic iron is great practical importance. Herein, we report the direct (99.92 %) via a one-step electrochemical strategy in molten CaCl2-CaO-Fe2O3 system at 850 oC. involved CaO-assisted dissolution Fe2O3 and electrodeposition mechanism were systematically studied, obtained products characterized using scanning electron microscopy, inductively-coupled high-frequency plasma emission spectrometry, glow discharge mass spectrometry. results show that...
As a feature of global warming, climate change has been severe issue in the 21st century. A more comprehensive reconstruction is necessary assessment process, considering heterogeneity scenarios across various meteorological elements and seasons. To better comprehend minimum temperature winter Jinsha River Basin (China), we built standard tree-ring chronology from Picea likiangensis var. balfouri reconstructed regional mean half-years 1606 to 2016. This provides overview changes over...
Studying impacts of the CO2 effect on potential evapotranspiration (PET) and offline drought indices from surface resistance perspective is significant for understanding accessing droughts. This study comprehensively investigated PET Standardized Precipitation-Evapotranspiration Index (SPEI) over China during 1971–2010 based two simulations with without effect, respectively. We found that led to decreased increased SPEI, drought, which showed strong spatial variations greatest impact...