scholarly journals Integration of the variable infiltration capacity model soil hydrology scheme into the community land model

2008 ◽  
Vol 113 (D9) ◽  
Author(s):  
Aihui Wang ◽  
Kaiyuan Y. Li ◽  
Dennis P. Lettenmaier
Keyword(s):  
Variable Infiltration Capacity ◽  
Soil Hydrology ◽  
Infiltration Capacity ◽  
Model Soil ◽  
Community Land Model ◽  
Variable Infiltration Capacity Model ◽  
Capacity Model

scholarly journals Application of Variable Infiltration Capacity Model (Vic) for Calculatingdrought Iindicators for Binh Thuan Province

2018 ◽  
Vol 34 (1S) ◽  
Author(s):  
Nguyen Quang Hung ◽  
Le Duc Khanh
Keyword(s):  
Water Exchange ◽  
Water Resources Planning ◽  
Variable Infiltration Capacity ◽  
Drought Forecasting ◽  
Infiltration Capacity ◽  
Vic Model ◽  
Variable Infiltration Capacity Model ◽  
Capacity Model ◽  
Exchange Processes ◽  
Resources Planning

Abstract: Drought is a complex natural hazard;so far, there have been some different ways to assess the level of drought in different aspects. In this study, the Variable Infiltration Capacity Model (VIC) was used to calculate the relative humidity changes of soil in Binh Thuan province based on surface water exchange processes. The simulation results of the VIC model are then used to calculate drought indicators to assess the drought situation in Binh Thuan province. The results of the study show that drought occurrences of the study basin are high, complicated, clearly showing the effect of rainfall, temperature and vegetation cover to water exchange, soil moisture. The results of the study serve as a basis for the development of drought forecasting tools for agricultural production planning and water resources planning and planning.   Keyword: Drought, VIC model, relative soil humidity, Bình Thuận

Modelling the dynamics of evapotranspiration using Variable Infiltration Capacity model and regionally calibrated Hargreaves approach

2018 ◽  
Vol 36 (4-5) ◽  
pp. 289-300 ◽  
Author(s):  
Ankur Srivastava ◽  
Bhabagrahi Sahoo ◽  
Narendra Singh Raghuwanshi ◽  
Chandranath Chatterjee
Keyword(s):  
Variable Infiltration Capacity ◽  
Infiltration Capacity ◽  
Variable Infiltration Capacity Model ◽  
Capacity Model

scholarly journals Modeling Evapotranspiration over China’s Landmass from 1979 to 2012 Using Multiple Land Surface Models: Evaluations and Analyses

2017 ◽  
Vol 18 (4) ◽  
pp. 1185-1203 ◽  
Author(s):  
Shaobo Sun ◽  
Baozhang Chen ◽  
Quanqin Shao ◽  
Jing Chen ◽  
Jiyuan Liu ◽  
...  
Keyword(s):  
Land Surface ◽  
Regional Scale ◽  
Temporal Variations ◽  
The Tibetan Plateau ◽  
Land Surface Models ◽  
Infiltration Capacity ◽  
Community Land Model ◽  
Variable Infiltration Capacity Model ◽  
Capacity Model ◽  
Surface Models

Abstract Land surface models (LSMs) are useful tools to estimate land evapotranspiration at a grid scale and for long-term applications. Here, the Community Land Model, version 4.0 (CLM4.0); Dynamic Land Model (DLM); and Variable Infiltration Capacity model (VIC) were driven with observation-based forcing datasets, and a multiple-LSM ensemble-averaged evapotranspiration (ET) product (LSMs-ET) was developed and its spatial–temporal variations were analyzed for the China landmass over the period 1979–2012. Evaluations against measurements from nine flux towers at site scale and surface water budget–based ET at regional scale showed that the LSMs-ET had good performance in most areas of China’s landmass. The intercomparisons between the ET estimates and the independent ET products from remote sensing and upscaling methods suggested that there were fairly consistent patterns between each dataset. The LSMs-ET produced a mean annual ET of 351.24 ± 10.7 mm yr−1 over 1979–2012, and its spatial–temporal variation analyses showed that (i) there was an overall significant ET increasing trend, with a value of 0.72 mm yr−1 (p < 0.01), and (ii) 36.01% of Chinese land had significant increasing trends, ranging from 1 to 9 mm yr−1, while only 6.41% of the area showed significant decreasing trends, ranging from −6.28 to −0.08 mm yr−1. Analyses of ET variations in each climate region clearly showed that the Tibetan Plateau areas were the main contributors to the overall increasing ET trends of China.

scholarly journals Sensitivity and uncertainty analysis of the Variable Infiltration Capacity model in the upstream of Heihe River basin

2015 ◽  
Vol 368 ◽  
pp. 312-316
Author(s):  
R. He ◽  
B. Pang
Keyword(s):  
River Basin ◽  
Soil Layer ◽  
Heihe River Basin ◽  
Heihe River ◽  
Model Parameters ◽  
Variable Infiltration Capacity ◽  
Infiltration Capacity ◽  
The Third ◽  
Variable Infiltration Capacity Model ◽  
Capacity Model

Abstract. The increasing water problems and eco-environmental issues of Heihe River basin have attracted widespread attention. In this research, the VIC (Variable Infiltration Capacity) model was selected to simulate the water cycle of the upstream in Heihe River basin. The GLUE (Generalized Likelihood Uncertainty Estimation) method was used to study the sensitivity of the model parameters and the uncertainty of model outputs. The results showed that the Nash-Sutcliffe efficient coefficient was 0.62 in the calibration period and 0.64 in the validation period. Of the seven elected parameters, Dm (maximum baseflow that can occur from the third soil layer), Ws (fraction of the maximum soil moisture of the third soil layer where non-linear baseflow occurs), and d1 (soil depth of the first soil layer), were very sensitive, especially d1. Observed discharges were almost in the range of the 95% predicted confidence range.

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