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The presence of ice in soil dramatically alters soil hydrologic and thermal properties. Despite this important role, many recent studies show that explicitly including the hydrologic effects of soil ice in land surface models degrades the... more
The presence of ice in soil dramatically alters soil hydrologic and thermal properties. Despite this important role, many recent studies show that explicitly including the hydrologic effects of soil ice in land surface models degrades the simulation of runoff in cold regions. This paper addresses this dilemma by employing the Community Land Model version 2.0 (CLM2.0) developed at the National
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Groundwater interacts with soil moisture through the exchanges of water between the unsaturated soil and its underlying aquifer under gravity and capillary forces. Despite its importance, groundwater is not explicitly represented in... more
Groundwater interacts with soil moisture through the exchanges of water between the unsaturated soil and its underlying aquifer under gravity and capillary forces. Despite its importance, groundwater is not explicitly represented in climate models. This paper developed a simple groundwater model (SIMGM) by representing recharge and discharge processes of the water storage in an unconfined aquifer, which is added as a single integration element below the soil of a land surface model. We evaluated the model against the Gravity Recovery and Climate Experiment (GRACE) terrestrial water storage change (DeltaS) data. The modeled total water storage (including unsaturated soil water and groundwater) change agrees fairly well with GRACE estimates. The anomaly of the modeled groundwater storage explains most of the GRACE DeltaS anomaly in most river basins where the water storage is not affected by snow water or frozen soil. For this reason, the anomaly of the modeled water table depth agree...
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Research Interests: Continuous Improvement, Sensitivity Analysis, Hydrometeorology, Water Cycle, High Frequency, and 17 moreSeasonality, Model Identification, Atmospheric sciences, Soil moisture, Performance Model, Data Collection, Mantle Transition Zone, Bias Correction, Evaluation Model, Model Evaluation, Model development, Spatial Pattern, High Resolution, Multiple model, Cost Function, Land Surface Model, and Parameter Uncertainty
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Research Interests: Groundwater, Prediction, Heat Transfer, Groundwater modeling, Persistence, and 24 moreMultidisciplinary, Simulation, Growth, Seasonality, Dynamics, Atmosphere, Soil moisture, United States, Ground Water, Feedback, Climate Models, Heat Flux, Mantle Transition Zone, Aquifers, Vegetation, Precipitation, Groundwater-Surface water interaction, Geophysical, Coupling, Summer, Land Surface Model, Diurnal Cycle, Model coupling, and Vegetative Growth
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Research Interests: Environmental Engineering, Civil Engineering, Geochemistry, Climatology, Stable Isotopes, and 15 moreHydrometeorology, Simulation, Seasonality, Atmospheric sciences, Stable Isotope, Water balance, Surface Water, SURFACE RUNOFF PREDICTION, Meteoric water, Oxygen, Diurnal Variation, Fractionation, Isotope effect, Seasonal Variations, and International Atomic Energy Agency
Research Interests: Environmental Engineering, Civil Engineering, Atmospheric Modeling, Seasonality, former Soviet Union, and 11 moreNorth America, Geographic distribution, Air Temperature, Model Generation, Microwave radiometer, Snow Cover, Physics based Modeling, Hydrological Processes, Hydrological, Snow Depth, and Snow water equivalent
Research Interests: Earth Sciences, Surface Roughness, Numerical Weather Prediction, Seasonality, Land Surface Temperature, and 13 moreSurface Water, Root-Mean Square Error, Heat Flux, Surface parameterization, Climate Model, Solar radiation, Data Model, Air Temperature, Snow Cover, Wind Speed, Energy Flux, Response surface, and Sensible Heat Flux
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Research Interests: Time Use, Multidisciplinary, Water Cycle, Model Calibration, Performance Model, and 15 moreWater Table, Model Evaluation, Random sampling, Geophysical, Climate impacts, Data Aggregation, Water Table Depth, Water Flow, Simulation Model, Soil Profile, Exponential Function, Soil Texture, Land Surface Model, Model coupling, and Unsaturated Zone
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In this study, we simulated and analyzed the monthly variations of stable water isotopes in different reservoirs at Manaus, Brazil, using the Community Land Model (CLM) that incorporates stable isotopic effects as a diagnostic tool for... more
In this study, we simulated and analyzed the monthly variations of stable water isotopes in different reservoirs at Manaus, Brazil, using the Community Land Model (CLM) that incorporates stable isotopic effects as a diagnostic tool for understanding stable water isotopic processes, filling the observational data gaps and predicting hydrometeorological processes. The simulation results show that the δ18O values in precipitation,
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The Technical Notes series provides an outlet for a variety of NCAR Manuscripts that contribute in specialized ways to the body of scientific knowledge but that are not suitable for journal, monograph, or book publication. Reports in this... more
The Technical Notes series provides an outlet for a variety of NCAR Manuscripts that contribute in specialized ways to the body of scientific knowledge but that are not suitable for journal, monograph, or book publication. Reports in this series are issued by the NCAR scientific divisions. Designation symbols for the series include: EDD–Engineering, Design, or Development Reports Equipment descriptions, test results, instrumentation, and operating and maintenance manuals. IA–Instructional Aids Instruction manuals, ...