A5014808385- Hydrology and Watershed Management Studies
- Meteorological Phenomena and Simulations
- Climate variability and models
- Flood Risk Assessment and Management
- Urban Heat Island Mitigation
- Precipitation Measurement and Analysis
- Urban Stormwater Management Solutions
- Cryospheric studies and observations
- Land Use and Ecosystem Services
- Wind and Air Flow Studies
- Water resources management and optimization
- Plant Water Relations and Carbon Dynamics
- Hydrological Forecasting Using AI
- Environmental and Agricultural Sciences
- Remote Sensing and Land Use
- Soil Moisture and Remote Sensing
- Hydrology and Drought Analysis
- Soil and Unsaturated Flow
- Urban Green Space and Health
- Water-Energy-Food Nexus Studies
- Groundwater flow and contamination studies
- Tropical and Extratropical Cyclones Research
- Fish Ecology and Management Studies
- Soil erosion and sediment transport
- Research studies in Vietnam
Tsinghua University
2016-2025
University of Chinese Academy of Sciences
2023
Institute of Atmospheric Physics
2023
Chinese Academy of Sciences
2023
Ministry of Water Resources of the People's Republic of China
2016-2023
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering
2011-2022
GFZ Helmholtz Centre for Geosciences
2016
Princeton University
2016
Yellow River Conservancy Technical Institute
2013
Yellow River Institute of Hydraulic Research
2008
On the basis of long time series climate and discharge in 108 nonhumid catchments China this study analyzes spatial temporal variability annual water‐energy balance using Budyko hypothesis. For both long‐term means values water balances catchments, Fu's formula derived from hypothesis is confirmed. A high correlation relatively small systematic error between parameter ϖ equation optimized individual year calibrated mean show that can be used for predicting interannual regional balances. It...
Previous projections show consistent increases in river flows of Asian Water Towers under future climate change. Here we find non-monotonic changes for seven major rivers originating from the Tibetan Plateau at warming levels 1.5 °C, 2.0 and 3.0 °C based on an observation-constrained hydrological model. The annual mean streamflow level decreases by 0.1-3.2% relative to present-day condition, 1.5-12% level. shifting Yellow, Yangtze, Brahmaputra, Ganges are mostly influenced projected...
Abstract. One expected consequence of global warming is the increase in evaporation. However, lots observations show that rate evaporation from open pans water has been steadily decreasing all over world past 50 years. The contrast between expectation and observation called "evaporation paradox". Based on data 317 weather stations China 1956 to 2005, trends pan air temperature were obtained paradox was analyzed. conclusions include: (1) From existed as a whole while kept became warmer...
This study investigated impacts of urban forms on the future thermal environment over Beijing, capital city China. Beijing is experiencing remarkable expansion and planned to undergo transformation from single-centric (compact-city) poly-centric (dispersed-city). Impacts were compared evaluated by conducting numerical experiments based a regional atmospheric model coupled with single-layer canopy as well climate forcing output global model. Results show that dispersed efficient in reducing...
Abstract A distributed hydrological model, water and energy transfer processes (WEP) is developed to simulate spatially variable in watersheds with complex land covers. In the state variables include depression storage on surfaces canopies, soil moisture content, surface temperature, groundwater tables stages rivers, etc. The subgrid heterogeneity of use also taken into consideration by using mosaic method. For processes, evapotranspiration computed Penman–Monteith equation, infiltration...
ABSTRACT Atmospheric rivers (ARs), filamentary patterns of strong water vapour fluxes, play a prominent role in global poleward moisture transport and have profound impacts on extreme rainfalls (ERs). Previous AR research has mainly focused the mid‐latitude regions, whereas characteristics ARs low latitudes their relationship with local ERs remain largely unknown. This study investigates spatiotemporal over Bay Bengal after landing northern Indian subcontinent using ERA‐Interim reanalysis...
Abstract The aim of this study is to evaluate the accuracy daily rainfall estimates based on GPM level-3 final product derived from IMERG algorithm (abbreviated as IMERG) and TRMM 3B42, version 7 3B42), in upper Mekong River basin, a mountainous region southwestern China. High-density rain gauges provide exceptional resources for ground validation satellite over region. performance two products evaluated during rainy seasons (May–October) period 2014–15, well their applications hydrological...
Abstract. A warmer climate may lead to less precipitation falling as snow in cold seasons. Such a switch the state of not only alters temporal distribution intra-annual runoff but also tends yield total annual runoff. Long-term water balance for 282 catchments across China is investigated, showing that decreasing ratio reduces given precipitation. Within Budyko framework, we develop an equation quantify relationship between and from water–energy viewpoint. Based on proposed equation,...
Abstract As the climate warms, heat waves (HWs) are projected to be more intense and last longer, with serious implications for public health. Urban residents face higher health risks because urban islands exacerbate HW conditions. One strategy mitigate negative impacts of thermal stress is installation green roofs (GRs) given their evaporative cooling effect. However, effectiveness GRs mechanisms by which they have an effect at scale entire cities still largely unknown. The Greater Beijing...
Abstract. Raindrop size distribution (DSD) information is fundamental in understanding the precipitation microphysics and quantitative estimation, especially complex terrain or urban environments which are known for complicated rainfall mechanism high spatial temporal variability. In this study, DSD characteristics of rainy seasons Beijing area extensively investigated using 5-year observations from a Parsivel2 disdrometer located at Tsinghua University. The results show that samples with...
Abstract Precipitation nowcasting is a crucial element in current weather service systems. Data-driven methods have proven highly advantageous, due to their flexibility utilizing detailed initial hydrometeor observations, and capability approximate meteorological dynamics effectively given sufficient training data. However, data-driven often encounter severe approximation/optimization errors, rendering predictions associated uncertainty estimates unreliable. Here probabilistic diffusion...
The hysteresis effect in diurnal cycles of net radiation R n and ground heat flux G 0 has been observed many studies, while the governing mechanism remains vague. In this study, we link phenomenology loops to wave phase difference between evolutions various terms surface energy balance. are parameterized with incoming solar temperature as two control parameters partitioning. theoretical analysis shows that vertical water W scaled ratio (net shortwave outgoing longwave radiation) play crucial...
Abstract Anthropogenic heat is an important component of the urban energy budgets that can affect land surface and atmospheric boundary layer processes. Representation anthropogenic in numerical climate modeling systems therefore when simulating meteorology has potential to improve weather forecasts, process studies, demand analysis. Here, spatiotemporally dynamic data estimated by Building Effects Parameterization Energy Model (BEP-BEM) are incorporated into Weather Research Forecasting...
Abstract The impacts of cities and climate warming on extreme rainfall under strong synoptic conditions are not well understood. Here, we carry out the first model‐based assessment urban flood‐producing storms for European region. We identify contrasting roles in determining space‐time variability July 14, 2021 storm over western Europe. While dominates temporal domain, further enhance total their suburbs by dynamically modifying intensity position moisture convergence. There is a cyclonic...
Weather radar plays an important role in accurate weather monitoring and modern forecasting, as it can provide timely refined forecasts for the public decision makers. Deep learning has been applied nowcasting tasks exhibited a better performance than traditional echo extrapolation methods. However, current deep learning-based models are found to suffer from spatial “blurry” effect that be attributed deficiency variability representation. This study proposes Spatial Variability...
Abstract. This work presents an efficient graph reconstruction-based approach for generating physical sewer models from incomplete information, addressing the challenge of representing drainage effect in urban pluvial flood simulation. The utilizes graph-based topological analysis and hydraulic design constraints to derive gravitational flow directions nodal invert elevations decentralized networks with multiple outfalls. By incorporating linearized programming formulation solve...
Floods pose a significant threat to urban areas due their high population densities and extensive infrastructure, vulnerability exacerbated by climate change, rapid urbanization, the proliferation of impermeable surfaces. While traditional flood prediction efforts have focused on maximum inundation depths, dynamic mapping has gained prominence for its ability provide detailed insights into timing, duration, progression, which are critical effective emergency response, infrastructure...
Abstract A decline of surface wind speed (wind stilling) has been observed in many regions the world. The greater Beijing metropolitan area China is taken as an example for analyzing urbanization impact on stilling. This study set up five scenarios with different ratios and same atmospheric forces then simulated under each scenario using next-generation Weather Research Forecasting model. results suggest that correspondence between regional average ratio decrease Δ u urbanized δ urban (%)...