A5061097993- Hydrology and Watershed Management Studies
- Soil Moisture and Remote Sensing
- Climate variability and models
- Plant Water Relations and Carbon Dynamics
- Flood Risk Assessment and Management
- Meteorological Phenomena and Simulations
- Soil and Unsaturated Flow
- Energy Efficient Wireless Sensor Networks
- Precipitation Measurement and Analysis
- Scientific Computing and Data Management
- Cryospheric studies and observations
- Hydrological Forecasting Using AI
- Energy Harvesting in Wireless Networks
- Hydrology and Drought Analysis
- Environmental Monitoring and Data Management
- Distributed and Parallel Computing Systems
- Groundwater flow and contamination studies
- Water Quality Monitoring Technologies
- Climate change and permafrost
- Landslides and related hazards
- Advanced Data Storage Technologies
- Advanced Computational Techniques and Applications
- Neural Networks and Applications
- Advanced Algorithms and Applications
- Coal and Its By-products
University of Pittsburgh
2015-2024
Indiana University
2015
Indiana University – Purdue University Indianapolis
2014
Sichuan University
2010-2012
State Key Laboratory of Hydraulics and Mountain River Engineering
2012
Xi'an Jiaotong University
2011
Lanzhou University
2008-2010
Anhui University
2010
University of California, Berkeley
1999-2006
Project Management Institute
2002
A generalization of the single soil layer variable infiltration capacity (VIC) land surface hydrological model previously implemented in Geophysical Fluid Dynamics Laboratory general circulation (GCM) is described. The new comprised a two‐layer characterization column, and uses an aerodynamic representation latent sensible heat fluxes at surface. algorithm for upper essentially same as VIC model, while lower drainage formulation form Max‐Planck‐Institut GCM. partitions area interest (e.g.,...
Abstract Drainage basins in many parts of the world are ungauged or poorly gauged, and some cases existing measurement networks declining. The problem is compounded by impacts human-induced changes to land surface climate, occurring at local, regional global scales. Predictions gauged under these conditions highly uncertain. IAHS Decade on Ungauged Basins, PUB, a new initiative launched International Association Hydrological Sciences (IAHS), aimed formulating implementing appropriate science...
A grid network version of the two‐layer variable infiltration capacity (VIC‐2L) macroscale hydrologic model is described. VIC‐2L a hydrologically based soil‐ vegetation‐atmosphere transfer scheme designed to represent land surface in numerical weather prediction and climate models. The allows streamflow be predicted for large continental rivers. Off‐line (observed estimated meteorological radiative forcings) applications Columbia River (1° latitude‐longitude spatial resolution) Delaware...
The two‐layer variable infiltration capacity (VIC‐2L) model is extended to incorporate a representation of subgrid variability in precipitation, using an analytical one‐dimensional statistical dynamic for partial area coverage precipitation. approach allows the effects subgrid‐scale spatial precipitation on surface fluxes, runoff production, and soil moisture be represented explicitly. With this method, spatially integrated representations runoff, due infiltration, vegetation cover are...
The sensitivity of sensible and latent heat fluxes surface temperatures to the parameterization soil thermal conductivity is demonstrated using a vegetation atmosphere transfer scheme (SVATS) applied intensive field campaigns (IFCs) 3 4 First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE). In particular, commonly used function for presented by M. C. McCumber R. A. Pielke results in overestimation during wet periods underestimation dry periods, as...
Abstract. Land-surface models (LSMs) are increasingly called upon to represent not only the exchanges of energy, water and momentum across land–atmosphere interface (their original purpose in climate models), but also how ecosystems resources respond climate, atmospheric environment, land-use change, these responses turn influence fluxes carbon dioxide (CO2), trace gases other species that affect composition chemistry atmosphere. However, LSMs embedded state-of-the-art differ they...
In the Project for Intercomparison of Land-Surface Parameterization Schemes phase 2a experiment, meteorological data year 1987 from Cabauw, Netherlands, were used as inputs to 23 land-surface flux schemes designed use in climate and weather models. evaluated by comparing their outputs with long-term measurements surface sensible heat fluxes into atmosphere ground, upward longwave radiation total net radiative fluxes, also them latent derived a energy balance. Tuning observed was not...
This paper describes a new parameterization to represent surface and groundwater interaction dynamics for land models. With the parameterization, effects of interactions on soil moisture, evapotranspiration, runoff, recharge can be dynamically taken into account. The is implemented three‐layer variable infiltration capacity (VIC‐3L) model, which hydrologically based scheme. version VIC (called VIC‐ground) applied two watersheds in Pennsylvania over multiple years. Results show that...
▪ Abstract Recent increased interest in the role of land surface weather and climate, including impacts due to climate change, has resulted hydrologic models that incorporate processes which describe exchange water energy at Earth's surface. The development a grid-based hydrological model with full soil-vegetation-atmospheric-transfer (SVAT) parameterization is summarized. suitable both for simulating continental-scale river basins high temporal spatial resolutions as atmospheric general...
A new ground heat flux parameterization for land surface schemes, such as those used in climate and numerical weather prediction models, is described. Compared with other approaches that lump the canopy layer surface, or empirically based consider effect of radiation attenuation through layer, has several advantages. First, reduction available conducting soil exchange under vegetated areas represented a manner assures conserved long term. Second, problems representing properly phase are...
Among the three dynamically linked branches of water cycle, including atmospheric, surface, and subsurface water, groundwater is largest reservoir an active component hydrologic system. Because inherent slow response time, may be particularly relevant for long time-scale processes such as multi-years or decadal droughts. This study uses regional climate simulations with without surface water–groundwater interactions conterminous US to assess influence climate, soil, vegetation on table...
Abstract Rainfall runoff and leaching are the main driving forces that nitrogen, an important non‐point source (NPS) pollutant, enters streams, lakes, groundwater. Hydrological transport processes thus play a pivotal role in NPS nitrogen pollution. Existing hydro‐environmental models for pollution often over‐simplify within‐watershed processes. It is unclear how such simplification affects assessment regarding formation distribution of denitrification hot spots—which design land‐based...
The face of hydrologic science is changing rapidly, on national as well international scales.The increasing complexity the problems hydrology asked to investigate in research and practice today often requires solutions that can no longer be obtained by a single hydrologist, but require multidisciplinary team. One consequence this trend establishment initiatives help formulate implement programs engage energize scientific community toward achieving major advances. IAHS Decade Predictions...
In this paper, we extend the original work on multiresolution learning for neural networks, and present new developments paradigm. The contributions of paper include: 1) proposing a concept method adjustable activation functions in to improve network efficacy generalization performance signal predictions; 2) providing insightful explanations paradigm from optimization perspective; 3) exploring underlying ideas why scheme associated with would be more appropriate paradigm; 4) rigorous...