Effect of irrigation water withdrawals on water and energy balance in the Mekong River Basin using an improved VIC land surface model with fewer calibration parameters

Tatsumi, Kenichi; Yamashiki, Yosuke

doi:10.1016/j.agwat.2015.05.011

Cited by 54 publications

(30 citation statements)

References 66 publications

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“…Because the VIC model can only provide the run-off yield for each grid cell, it is necessary to couple it with the routing model developed by Lohmann, Nolte-Holube, Raschke (1996) and Lohmann, Raschke, Nijssen, and Lettenmaier (1998) to produce simulated streamflow at the outlet of the basin, which is based on a linearized Saint-Venant equation. Generally, the VIC model has been widely used for hydrologic simulations (Nijssen et al, 1997(Nijssen et al, , 2001Yong et al, 2010;Shrestha et al, 2012;Grimson et al, 2013;Najafi & Moradkhani, 2014;Tatsumi et al, 2015;Sun et al, 2016;Siraj & Stephen, 2017;Yanto et al, 2017), and several studies verified that the model can be commendably applied for the monsoon humid area of south China (Xiao et al, 2013;Wu et al, 2014). (Saxton & Rawls, 2006) were applied to convert them into the hydraulic parameters (i.e., saturated hydrologic conductivity and field capacity) required by the VIC model (for details please refer to the URL: vic.readthedocs.io).…”

Section: Vic Hydrological Modelmentioning

confidence: 99%

Evaluation and hydrologic validation of TMPA satellite precipitation product downstream of the Pearl River Basin, China

Wang

Zhong

2017

Hydrological Processes

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With high spatio‐temporal resolution and wide coverage, satellite‐based precipitation products can potentially fill the deficiencies of traditional in situ gauge precipitation observations and provide an alternative data source for ungauged areas. However, due to the relatively poor accuracy and high uncertainty of satellite‐based precipitation products, it remains necessary to assess the quality and applicability of the products for each investigated area. This study evaluated the accuracy and error of the latest Tropical Rainfall Measuring Mission Multi‐satellites Precipitation Analysis 3B42‐V7 satellite‐based precipitation product and validated the applicability of the product for the Beijiang and Dongjiang River Basins, downstream of the Pearl River Basin in China. The study first evaluated the accuracy, error, and bias of the 3B42‐V7 product during 1998–2006 at daily and monthly scale via comparison with in situ observations. The study further validated the applicability of the product via hydrologic simulation using the variable infiltration capacity hydrological model for three hydrological stations in the Beijiang River Basin, considering two scenarios: a streamflow simulation with gauge‐calibrated parameters (Scenario I) and a simulation after recalibration with the 3B42‐V7 product (Scenario II). The results revealed that (a) the 3B42‐V7 product produced acceptable accuracy both at the daily scale and high accuracy at the monthly scale while generally tending to overestimate precipitation; (b) the product clearly overestimated the frequency of no rainfall events at the grid cell scale and light rainfall (<1 mm/day) events at the region scale and also overestimated the amount of heavy rain (25–50 mm/day) and hard rain (≥50 mm/day) events; (c) under Scenario I, the 3B42‐V7 product performed poorly at three stations with gauge‐calibrated parameters; under Scenario II, the recalibrated model provided significantly improved performance of streamflow simulation with the 3B42‐V7 product; (d) the variable infiltration capacity model has the ability to reveal the hydrological characteristics of the karst landform in the Beijiang Basin when using the 3B42‐V7 product.

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Section: Vic Hydrological Modelmentioning

confidence: 99%

Evaluation and hydrologic validation of TMPA satellite precipitation product downstream of the Pearl River Basin, China

Wang

Zhong

2017

Hydrological Processes

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“…Several such large-scale models have been applied over the Mekong or some global analyses include the MRB. The effects of irrigation water abstraction on surface water and energy fluxes were evaluated using the Variable Infiltration Capacity (VIC) hydrologic model [73], indicating that the volume-based total net irrigation water requirement was about 24 × 10 9 m 3 /year for 1979-2000 [74]. Other studies have used VIC to examine streamflow and the relative role of precipitation and soil moisture on streamflows (e.g., [65,126]).…”

Section: Hydrological Modelingmentioning

confidence: 99%

“…Thus, changes in land cover type and application of additional water through irrigation can substantially alter both the water and energy balance on the surface [56,[72][73][74][75][76]. Global modeling studies have found that while the basin-scale changes in runoff, ET, and land surface temperature due to cropland expansion and irrigation are small, the changes over highly irrigated areas in the LMRB are significant [56,73].…”

Section: Land Use Change and Agricultural And Irrigation Expansionmentioning

confidence: 99%

A Review of the Integrated Effects of Changing Climate, Land Use, and Dams on Mekong River Hydrology

Pokhrel

Burbano

Roush

et al. 2018

Water

184

112

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Abstract:The ongoing and proposed construction of large-scale hydropower dams in the Mekong river basin is a subject of intense debate and growing international concern due to the unprecedented and potentially irreversible impacts these dams are likely to have on the hydrological, agricultural, and ecological systems across the basin. Studies have shown that some of the dams built in the tributaries and the main stem of the upper Mekong have already caused basin-wide impacts by altering the magnitude and seasonality of flows, blocking sediment transport, affecting fisheries and livelihoods of downstream inhabitants, and changing the flood pulse to the Tonle Sap Lake. There are hundreds of additional dams planned for the near future that would result in further changes, potentially causing permanent damage to the highly productive agricultural systems and fisheries, as well as the riverine and floodplain ecosystems. Several studies have examined the potential impacts of existing and planned dams but the integrated effects of the dams when combined with the adverse hydrologic consequences of climate change remain largely unknown. Here, we provide a detailed review of the existing literature on the changes in climate, land use, and dam construction and the resulting impacts on hydrological, agricultural, and ecological systems across the Mekong. The review provides a basis to better understand the effects of climate change and accelerating human water management activities on the coupled hydrological-agricultural-ecological systems, and identifies existing challenges to study the region's Water, Energy, and Food (WEF) nexus with emphasis on the influence of future dams and projected climate change. In the last section, we synthesize the results and highlight the urgent need to develop integrated models to holistically study the coupled natural-human systems across the basin that account for the impacts of climate change and water infrastructure development. This review provides a framework for future research in the Mekong, including studies that integrate hydrological, agricultural, and ecological modeling systems.

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“…Spatial variations of infiltration, precipitation, and vegetation are partially considered in the model to simulate water and energy budgets on the land surface. The VIC model has been successfully applied and evaluated in many major river basins within the U.S. [12], the Mekong River Basin [13,14], and on a global scale [15]. The quality and coverage of precipitation observation greatly influence the accuracy of hydrological modeling [16].…”

mentioning

confidence: 99%

Evaluation and Hydrological Application of TRMM and GPM Precipitation Products in a Tropical Monsoon Basin of Thailand

Shi

et al. 2019

Water

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Watershed runoff is essential for water management. However, runoff materials are lacking in poorly gauged catchments and not always accessible. Microwave remote sensing offers emerging capabilities for hydrological simulation. In this study based on multi-satellite retrievals for Global Precipitation Measurement (IMERG), Tropical Rainfall Measuring Mission (TRMM) products, and World Meteorological Organization (WMO) interpolated precipitation data, we simulated runoff using a variable infiltration capacity (VIC) model and studied the differences among the results. Then, we analyzed the impacts of the runoff on a moderate-resolution imaging spectroradiometer vegetation leaf area index (LAI) during dry seasons. The results showed that (1) IMERG V5 and TRMM products are capable of monitoring the night-day rainfall diurnal cycle and have higher correlations than the WMO daily observation interpolations. However, the WMO shows less overestimation of total precipitation than remote-sensing precipitation; (2) in the downstream, the TRMM shows better runoff simulation accuracy in the tributaries, and the WMO shows better results in the mainstreams. Therefore, at basin outlets in mainstreams, the Nash-Sutcliffe efficiency coefficients of monthly runoff by the WMO are higher than the simulations by the TRMM; (3) for the whole basin during dry seasons, the LAI variation is correlated with the outlet runoff, which is similar to the correlation with threeto six-month accumulated precipitation. TRMM products can be used to depict both precipitation deficit and runoff deficit, which cause vegetation variations. Our research suggests the potential of microwave precipitation products for detailed watershed runoff simulations and water management.Water 2019, 11, 818 2 of 15 vegetation conditions, such as the normalized difference vegetation index (NDVI), a measure of the greenness or vigor of vegetation. The higher its value, the larger the vegetation density is; a low NDVI indicates stressed or small-leaf vegetation [3]. However, the NDVI can often be saturated across densely vegetated regions or during high-growth periods [4], whereas the leaf area index (LAI) has been shown to be more effective for drought monitoring [5,6]. Previous studies have shown that the multi-temporal accumulation precipitation index has a strong correlation with vegetation response [7][8][9]. The evolution of meteorological hydrological factors affects vegetation growth [10]. Both factors-precipitation and runoff-that cause variations in the vegetation LAI, should be examined separately.Dynamic watershed runoff is essential to the water supply, irrigation management, and accurate flood prediction and control. River discharge at a site is an integrated signal of water cycle processes over the catchment. However, many catchments lack runoff observation. A hydrological model is an important tool to understand water cycle processing and to fill the gaps of runoff information. The simulation accuracy mainly depends on model mechanisms and data input. The th...

show abstract

Effect of irrigation water withdrawals on water and energy balance in the Mekong River Basin using an improved VIC land surface model with fewer calibration parameters

Cited by 54 publications

References 66 publications

Evaluation and hydrologic validation of TMPA satellite precipitation product downstream of the Pearl River Basin, China

Evaluation and hydrologic validation of TMPA satellite precipitation product downstream of the Pearl River Basin, China

A Review of the Integrated Effects of Changing Climate, Land Use, and Dams on Mekong River Hydrology

Evaluation and Hydrological Application of TRMM and GPM Precipitation Products in a Tropical Monsoon Basin of Thailand

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