Large-scale variations of global groundwater from satellite gravimetry and hydrological models, 2002–2012

Jin, Shuanggen; Feng, Gao

doi:10.1016/j.gloplacha.2013.02.008

Cited by 111 publications

(59 citation statements)

References 19 publications

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“…With the help of TRMM data and NOAA's Climate Prediction Center (CPC) model simulations, Crowley et al (2008) found that the source (precipitation) is more important than sink (evapotranspiration and runoff) to the water balance in the Amazon basin. Other papers tried to separate variations in groundwater storage from GRACE TWS, and their results showed agreement with in situ observations (Rodell et al, 2009;Leblanc et al, 2009;Famiglietti et al, 2011;Jin and Feng, 2013).…”

Section: Introductionmentioning

confidence: 54%

Variations in water storage in China over recent decades from GRACE observations and GLDAS

Wang

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. We applied Gravity Recovery and Climate Experiment (GRACE) Tellus products in combination with Global Land Data Assimilation System (GLDAS) simulations and data from reports, to analyze variations in terrestrial water storage (TWS) in China as a whole and eight of its basins from 2003 to 2013. Amplitudes of TWS were well restored after scaling, and showed good correlations with those estimated from models at the basin scale. TWS generally followed variations in annual precipitation; it decreased linearly in the Huai River basin (−0.56 cm yr −1 ) and increased with fluctuations in the Changjiang River basin (0.35 cm yr −1 ), Zhujiang basin (0.55 cm yr −1 ) and southeast rivers basin (0.70 cm yr −1 ). In the Hai River basin and Yellow River basin, groundwater exploitation may have altered TWS's response to climate, and TWS kept decreasing until 2012. Changes in soil moisture storage contributed over 50 % of variance in TWS in most basins. Precipitation and runoff showed a large impact on TWS, with more explained TWS in the south than in the north. North China and southwest rivers region exhibited long-term TWS depletions. TWS has increased significantly over recent decades in the middle and lower reaches of Changjiang River, southeastern coastal areas, as well as the Hoh Xil, and the headstream region of the Yellow River in the Tibetan Plateau. The findings in this study could be helpful to climate change impact research and disaster mitigation planning.

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Section: Introductionmentioning

confidence: 54%

Variations in water storage in China over recent decades from GRACE observations and GLDAS

Wang

et al. 2016

Nat. Hazards Earth Syst. Sci.

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“…Such an approach has been applied in various studies for the analysis of seasonal and inter-annual variations in hydrological components (e.g., precipitation [38], groundwater [39], NDVI [40]). Each time series of hydrological components can be best fitted to a sine wave having an annual and semi-annual cycle.…”

Section: Decomposition Of Time Seriesmentioning

confidence: 99%

Total Discharge Estimation in the Korean Peninsula Using Multi-Satellite Products

Seo

2017

Water

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Estimation of total discharge is necessary to understand the hydrological cycle and to manage water resources efficiently. However, the task is problematic in an area where ground observations are limited. The North Korea region is one example. Here, the total discharge was estimated based on the water balance using multiple satellite products. They are the terrestrial water storage changes (TWSC) derived from the Gravity Recovery and Climate Experiment (GRACE), precipitation from the Tropical Rainfall Measuring Mission (TRMM), and evapotranspiration from the Moderate Resolution Imaging Spectroradiometer (MODIS). The satellite-based discharge was compared with land surface model products of the Global Land Data Assimilation System (GLDAS), and a positive relationship between the results was obtained (r = 0.70-0.86; bias = −9.08-16.99 mm/month; RMSE = 36.90-62.56 mm/month; NSE = 0.01-0.62). Among the four land surface models of GLDAS (CLM, Mosaic, Noah, and VIC), CLM corresponded best with the satellite-based discharge, satellite-based discharge has a tendency to slightly overestimate compared to model-based discharge (CLM, Mosaic, Noah, and VIC) in the dry season. Also, the total discharge data based on the Precipitation-Runoff Modeling System (PRMS) and the in situ discharge for major five river basins in South Korea show comparable seasonality and high correlation with the satellite-based discharge. In spite of the relatively low spatial resolution of GRACE, and loss of information incurred during the process of integrating three different satellite products, the proposed methodology can be a practical tool to estimate the total discharge with reasonable accuracy, especially in a region with scarce hydrologic data.

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“…Many researchers have used data gathered by the Gravity Recovery and Climate Experiment (GRACE), a multi-year research programme funded jointly by the United States and Germany, to characterize changes in aquifer storage in Africa, Asia, the Middle East, Australia, and in North and South America [98][99][100][101][102][103][104][105][106]. The characterizations, made possible by satellite coverage, are particularly helpful to water resource analysts and policy makers in regions where conventional data describing changes in aquifer storage are not readily available.…”

Section: Protecting Water Resourcesmentioning

confidence: 99%

Achieving Water and Food Security in 2050: Outlook, Policies, and Investments

Wichelns

2015

Agriculture

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Food production in 2050 will be sufficient, globally, but many of the poor will remain food insecure. The primary cause of food insecurity will continue to be poverty, rather than inadequate food production. Thus, policies and investments that increase the incomes of the poor will remain the best ways to extend food security to all. Investments that promote growth in sustainable agriculture and provide non-farm employment opportunities in rural areas of lower income countries will be most helpful. There will be sufficient water, globally, to achieve food production goals and sustain rural and urban livelihoods, if we allocate and manage the resource wisely. Yet, water shortages will constrain agricultural production and limit incomes and livelihood opportunities in many areas. Policies and investments are needed to extend and ensure access to water for household use and agricultural production. Challenges requiring the attention of policy makers and investors include increasing urbanization and increasing demands for land and water resources. Policy makers must ensure that farmers retain access to the water they need for producing food and sustaining livelihoods, and they must create greater opportunities for women in agriculture. They must also motivate investments in new technologies that will enhance crop and livestock production, particularly for smallholders, and encourage the private sector to invest in activities that create employment opportunities in rural areas.

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Large-scale variations of global groundwater from satellite gravimetry and hydrological models, 2002–2012

Cited by 111 publications

References 19 publications

Variations in water storage in China over recent decades from GRACE observations and GLDAS

Variations in water storage in China over recent decades from GRACE observations and GLDAS

Total Discharge Estimation in the Korean Peninsula Using Multi-Satellite Products

Achieving Water and Food Security in 2050: Outlook, Policies, and Investments

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