A5109925372- Meteorological Phenomena and Simulations
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Oceanographic and Atmospheric Processes
- Ocean Waves and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Hydrology and Watershed Management Studies
- Plant Water Relations and Carbon Dynamics
- Geology and Paleoclimatology Research
- Tree-ring climate responses
- Atmospheric Ozone and Climate
- Advanced Adaptive Filtering Techniques
- Advanced Mathematical Modeling in Engineering
- Precipitation Measurement and Analysis
- Distributed and Parallel Computing Systems
- Gaussian Processes and Bayesian Inference
- Atmospheric aerosols and clouds
- Wind and Air Flow Studies
- Advanced Power Amplifier Design
- Cryospheric studies and observations
- Hydrology and Sediment Transport Processes
- Advanced Numerical Methods in Computational Mathematics
- Disaster Management and Resilience
- Flood Risk Assessment and Management
- Archaeology and ancient environmental studies
Peking University
2024
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2024
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2024
National Marine Environmental Forecasting Center
2009-2024
Chinese Academy of Meteorological Sciences
2016-2024
Shandong University
2024
Beijing Institute of Big Data Research
2024
Institute of Archaeology
2023
Chinese Academy of Social Sciences
2023
Nanjing University of Information Science and Technology
2011-2021
Abstract During the presummer rainy season (April–June), southern China often experiences frequent occurrences of extreme rainfall, leading to severe flooding and inundations. To expedite efforts in improving quantitative precipitation forecast (QPF) Meteorological Administration (CMA) initiated a nationally coordinated research project, namely, Southern Monsoon Rainfall Experiment (SCMREX) that was endorsed by World Organization (WMO) as development project (RDP) Weather Research Programme...
Abstract Typhoon Megi (15W) was the most powerful and longest-lived tropical cyclone (TC) over western North Pacific during 2010. While it shared many common features of TCs that crossed Luzon Island in northern Philippines, experienced unique intensity structural changes, which were reproduced reasonably well a simulation using Advanced Research Weather Forecasting Model (ARW-WRF) with both dynamical initialization large-scale spectral nudging. In this paper processes responsible for rapid...
Abstract For paired mesoscale eddies, the most sensitive initial errors in relation to sea surface height anomaly (SSHA) forecasts are investigated by utilizing conditional nonlinear optimal perturbation (CNOP) method a two‐layer quasigeostrophic model and then areas identified accordingly. counter‐rotating CNOP primarily occur within eddies themselves, especially characterized clear high‐to low‐velocity gradients, accompanied shear structures; while for co‐rotating besides sharing feature...
A tree-ring width chronology was developed from the Chinese pine (Pinus tabuliformis) in northern North China. To acquire a long-term perspective on history of droughts this region, Standardized Precipitation Evapotranspiration Index (SPEI) August previous year to February current reconstructed for period 1903–2012 AD. The reconstruction explained 46.6% instrumental records over calibration 1952–2012. Five dry periods (1916–1927, 1962–1973, 1978–1991, 1994–1999 and 2002–2005) three wet...
Abstract Geostatistics has become a powerful method for investigating complex spatial variations of prehistoric settlements in floodplains and other geomorphological settings. A geoarchaeological drilling program that covers most the Sha‐Ying River Basin provides rare opportunity with unusually detailed environmental data to contest develop geostatistics method, which proves be essential, combination archaeological data, understand long‐term (9000–2500 B.P.) patterns human inhabitation...
Abstract Skillful medium-range weather forecasts are critical for water resources planning and management. This study aims to improve 15-day-ahead accumulated precipitation by combining biweekly disaggregated climate forecasts. A combination scheme is developed combine reforecasts from a numerical model ECHAM4.5 developing Evaluation of the skill weather–climate information (WCI)-based under leave-five-out cross validation shows that WCI-based perform better than in many grid points over...
ABSTRACT While Typhoon Megi (2010) shared many common features of tropical cyclones (TCs) that crossed Luzon Island in northern Philippines, it experienced a significant inner-core size increase with little eyewall contraction during its rapid intensification (RI) phase. This is unusual since the majority TCs experience an or slow RI. The RI was simulated reasonably well using Advanced Research Weather and Forecasting (ARW-WRF) model both dynamical initialization large-scale spectral...
As a test bed, the National Multi-model Ensemble (NMME) comprises seven climate models from different sources, including Oceanic and Atmospheric Administration, Aeronautics Space Center for Research International Institute Climate Society. It provides 89 ensemble members of precipitation forecasts at lead times. Precipitation forecasting has been applied to provide streamflow forecasts, its utility in water resource system operation demonstrated literature. In this study, 1-month-ahead NMME...
Abstract Atmospheric Infrared Sounder (AIRS) provides twice-daily global observations from which total column ozone data can be retrieved. However, 20% ~ 30% of AIRS are flagged to bad quality. Most the were identified have precipitable water (PW) errors, defined by ratio between PW errors and retrieval exceeding 35%. It was found that most within hurricanes because extremely low PW, is also retrieved observations. In this study, a new ratio, error divided National Centers for Environmental...
In this paper, a strongly nonlinear coupled elliptic-parabolic system modelling class of engineering problems with heat effect is studied. Existence weak solution first established by Schauder fixed point theorem, where the functions σ(s), k(s) are assumed to be bounded. The uniqueness obtained applying Meyers' theorem and assuming that Lipschitz continuous. regularity then analyzed in dimension d < 2 under assumptions on ∈ C2(R) boundedness their derivatives second order. Finally, blow-up...
Deep-learning-based convection schemes have garnered significant attention for their notable improvements in simulating precipitation distribution and tropical Earth system models. However, these struggle to capture the stochastic nature of moist physics, which can degrade simulation large-scale circulations, climate means, variability. To address this issue, a parameterization scheme called DIFF-MP, based on probabilistic diffusion model, is developed. Cloud-resolving data are...
Abstract In this study, the role of wind‐induced surface heat exchange (WISHE) in rapid intensification (RI) is investigated a numerical model. During development Hinnamnor, its energy growth rate (EGR) continuously increases as RI progresses. After Hinnamnor reaches maximum intensity, although EGR weakens little, it remains relatively large. If had not been for influence external environment (such tropical depression), intensity would have far greater than actual (140 knots). As WISHE...
Aiming at the nonlinear characteristics and memory effects of power amplifier, a rational function behavioral model, which based on polynomial model memoryless is proposed. The coefficients are identified by conjugate gradient method. estimation best nonlinearity order depth carried out minimized normalized mean squared error (MNSE). validated using multi-carrier WCDMA signal MRF6S21140H amplifier measurement. result indicates that proposed can achieve better performance with less number compared to
Many radio frequency (RF) power amplifiers (PAs) behavioral models have been developed in the past decades. Typical among them are Wiener model, Hammerstein Wiener-Hammerstein memory polynomial Volterra-based neural networks model. All these become powerful tools modeling RF PAs and linearization. Yet their formulations appear to be unrelated. We use Volterra series generalize all different models. The significance of this paper is twofold: 1) can unified by 2) any other new may with framework.