{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,4]],"date-time":"2026-03-04T07:36:08Z","timestamp":1772609768265,"version":"3.50.1"},"reference-count":66,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2015,1,12]],"date-time":"2015-01-12T00:00:00Z","timestamp":1421020800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Aimed at mapping time variations in the Earth\u2019s gravity field, the Gravity Recovery and Climate Experiment (GRACE) satellite mission is applicable to access terrestrial water storage (TWS), which mainly includes groundwater, soil moisture (SM), and snow. In this study, SM and accumulated snow water equivalent (SWE) are simulated by the Global Land Data Assimilation System (GLDAS) land surface models (LSMs) and then used to isolate groundwater anomalies from GRACE-derived TWS in Pennsylvania and New York States of the Mid-Atlantic region of the United States. The monitoring well water-level records from the U.S. Geological Survey Ground-Water Climate Response Network from January 2005 to December 2011 are used for validation. The groundwater results from different combinations of GRACE products (from three institutions, CSR, GFZ and JPL) and GLDAS LSMs (CLM, NOAH and VIC) are compared and evaluated with in-situ measurements. The intercomparison analysis shows that the solution obtained through removing averaged simulated SM and SWE of the three LSMs from the averaged GRACE-derived TWS of the three centers would be the most robust to reduce the noises, and increase the confidence consequently. Although discrepancy exists, the  GRACE-GLDAS estimated groundwater variations generally agree with in-situ observations. For monthly scales, their correlation coefficient reaches 0.70 at 95% confidence level with the RMSE of the differences of 2.6 cm. Two-tailed Mann-Kendall trend test results show that there is no significant groundwater gain or loss in this region over the study period. The GRACE time-variable field solutions and GLDAS simulations provide precise and reliable data sets in illustrating the regional groundwater storage variations, and the application will be meaningful and invaluable when applied to the data-poor regions.<\/jats:p>","DOI":"10.3390\/rs70100686","type":"journal-article","created":{"date-parts":[[2015,1,12]],"date-time":"2015-01-12T13:30:46Z","timestamp":1421069446000},"page":"686-703","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":83,"title":["Monitoring Groundwater Variations from Satellite Gravimetry and Hydrological Models: A Comparison with in-situ Measurements in the Mid-Atlantic Region of the United States"],"prefix":"10.3390","volume":"7","author":[{"given":"Ruya","family":"Xiao","sequence":"first","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, 1st Xikang Road, Nanjing 210098, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiufeng","family":"He","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, 1st Xikang Road, Nanjing 210098, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yonglei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shandong Province Investigation and Survey Institute of Urban and Rural Construction,  85 Wuyingshan Road, Ji'nan 250031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2209-9921","authenticated-orcid":false,"given":"Vagner","family":"Ferreira","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, 1st Xikang Road, Nanjing 210098, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liang","family":"Chang","sequence":"additional","affiliation":[{"name":"College of Marine Sciences, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,1,12]]},"reference":[{"key":"ref_1","unstructured":"Zektser, I.S., and Lorne, E. (2004). Groundwater Resources of the World: And Their Use, United Nations Educational, Scientific and Cultural Organization."},{"key":"ref_2","unstructured":"Gleick, P.H. (1993). Water in Crisis: A Guide to the World\u2019s Fresh Water Resources, Oxford University Press."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2110","DOI":"10.1002\/wrcr.20192","article-title":"Evaluation of groundwater depletion in North China using the gravity recovery and climate experiment (GRACE) data and ground-based measurements","volume":"49","author":"Feng","year":"2013","journal-title":"Water Resour. Res."},{"key":"ref_4","first-page":"B03410","article-title":"Interferometric synthetic aperture radar (InSAR) atmospheric correction: GPS, moderate resolution imaging spectroradiometer (MODIS), and InSAR integration","volume":"110","author":"Li","year":"2005","journal-title":"J. Geophys. Res.: Solid Earth"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1080\/19479832.2011.569510","article-title":"Groundwater prospect map of Egypt\u2019s Qena Valley using data fusion","volume":"3","author":"Abdelkareem","year":"2011","journal-title":"Int. J. Image Data Fusion"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1642","DOI":"10.1109\/JSTARS.2013.2271501","article-title":"Subsidence monitoring of Tianjin suburbs by TerraSAR-X persistent scatterers interferometry","volume":"7","author":"Luo","year":"2014","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1327","DOI":"10.1029\/2000WR900306","article-title":"An analysis of terrestrial water storage variations in Illinois with implications for the gravity recovery and climate experiment (GRACE)","volume":"37","author":"Rodell","year":"2001","journal-title":"Water Resour. Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1223","DOI":"10.1029\/2002WR001808","article-title":"Estimated accuracies of regional water storage variations inferred from the gravity recovery and climate experiment (GRACE)","volume":"39","author":"Swenson","year":"2003","journal-title":"Water Resour. Res."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"999","DOI":"10.1038\/nature08238","article-title":"Satellite-based estimates of groundwater depletion in india","volume":"460","author":"Rodell","year":"2009","journal-title":"Nature"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Swenson, S., and Wahr, J. (2002). Methods for inferring regional surface-mass anomalies from gravity recovery and climate experiment (GRACE) measurements of time-variable gravity. J. Geophys. Res.: Solid Earth.","DOI":"10.1029\/2001JB000576"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1300","DOI":"10.1126\/science.1236460","article-title":"Water in the balance","volume":"340","author":"Famiglietti","year":"2013","journal-title":"Science"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"B05404","DOI":"10.1029\/2008JB006056","article-title":"2005 drought event in the Amazon River basin as measured by GRACE and estimated by climate models","volume":"114","author":"Chen","year":"2009","journal-title":"J. Geophys. Res.: Solid Earth"},{"key":"ref_13","first-page":"814","article-title":"Terrestrial water storage changes in the Amazon basin measured by GRACE during 2002\u20132010","volume":"55","author":"Feng","year":"2012","journal-title":"Chin. J. Geophys.\u2013Chin. Ed."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"3029","DOI":"10.1002\/joc.3647","article-title":"Changes in terrestrial water storage versus rainfall and discharges in the Amazon basin","volume":"33","author":"Frappart","year":"2013","journal-title":"Int. J. Climatol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"3233","DOI":"10.1002\/jgrd.50335","article-title":"The role of groundwater in the Amazon water cycle: 3. Influence on terrestrial water storage computations and comparison with GRACE","volume":"118","author":"Pokhrel","year":"2013","journal-title":"J. Geophys. Res.: Atmos."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1007\/s11430-006-0483-5","article-title":"Seasonal water storage change of the Yangtze River basin detected by GRACE","volume":"49","author":"Hu","year":"2006","journal-title":"Sci. China Ser. D\u2013Earth Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"3415","DOI":"10.3390\/rs5073415","article-title":"Estimating total discharge in the Yangtze River basin using satellite-based observations","volume":"5","author":"Ferreira","year":"2013","journal-title":"Remote Sens."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"L19402","DOI":"10.1029\/2006GL027070","article-title":"Land water storage within the Congo Basin inferred from GRACE satellite gravity data","volume":"33","author":"Crowley","year":"2006","journal-title":"Geophys. Res. Lett."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"775","DOI":"10.1007\/s11269-007-9191-y","article-title":"The falling lake Victoria water level: GRACE, TRIMM and CHAMP satellite analysis of the lake basin","volume":"22","author":"Awange","year":"2008","journal-title":"Water Resour. Manag."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"L19503","DOI":"10.1029\/2009GL040222","article-title":"Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE","volume":"36","author":"Velicogna","year":"2009","journal-title":"Geophys. Res. Lett."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1080\/19479832.2010.491803","article-title":"The ice sheet height changes and mass variations in Antarctica by using ICESAT and GRACE data","volume":"2","author":"Wen","year":"2011","journal-title":"Int. J. Image Data Fusion"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1286","DOI":"10.1126\/science.1130776","article-title":"Recent greenland ice mass loss by drainage system from satellite gravity observations","volume":"314","author":"Luthcke","year":"2006","journal-title":"Science"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"B07406","DOI":"10.1029\/2010JB007789","article-title":"Interannual variability of greenland ice losses from satellite gravimetry","volume":"116","author":"Chen","year":"2011","journal-title":"J. Geophys. Res.: Solid Earth"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.gloplacha.2011.11.005","article-title":"Climate-driven interannual ice mass evolution in greenland","volume":"82\u201383","author":"Bergmann","year":"2012","journal-title":"Glob. Planet. Chang."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"514","DOI":"10.1038\/nature10847","article-title":"Recent contributions of glaciers and ice caps to sea level rise","volume":"482","author":"Jacob","year":"2012","journal-title":"Nature"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"549","DOI":"10.1038\/ngeo1829","article-title":"Contribution of ice sheet and mountain glacier melt to recent sea level rise","volume":"6","author":"Chen","year":"2013","journal-title":"Nat. Geosci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1007\/s10040-006-0103-7","article-title":"Estimating groundwater storage changes in the Mississippi River basin (USA) using GRACE","volume":"15","author":"Rodell","year":"2007","journal-title":"Hydrogeol. J."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"L18401","DOI":"10.1029\/2009GL039401","article-title":"Dwindling groundwater resources in northern India, from satellite gravity observations","volume":"36","author":"Tiwari","year":"2009","journal-title":"Geophys. Res. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"904","DOI":"10.1002\/wrcr.20078","article-title":"Groundwater depletion in the Middle East from GRACE with implications for transboundary water management in the Tigris-Euphrates-Western Iran region","volume":"49","author":"Voss","year":"2013","journal-title":"Water Resour. Res."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.gloplacha.2013.02.008","article-title":"Large-scale global groundwater variations from satellite gravimetry and hydrological models, 2002\u20132012","volume":"106","author":"Jin","year":"2013","journal-title":"Glob. Planet. Chang."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1007\/s10712-008-9049-8","article-title":"A comparison of global and regional grace models for land hydrology","volume":"29","author":"Klees","year":"2008","journal-title":"Surv. Geophys."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1165","DOI":"10.1007\/s00190-012-0572-5","article-title":"High-frequency signal and noise estimates of CSR GRACE RL04","volume":"86","author":"Bonin","year":"2012","journal-title":"J. Geod."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1175\/BAMS-85-3-381","article-title":"The global land data assimilation system","volume":"85","author":"Rodell","year":"2004","journal-title":"Bull. Am. Meteorol. Soc."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Cheng, M.K., and Tapley, B.D. (2004). Variations in the Earth\u2019s oblateness during the past 28 years. J. Geophys. Res.: Solid Earth.","DOI":"10.1029\/2004JB003028"},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Swenson, S., and Wahr, J. (2006). Post-processing removal of correlated errors in GRACE data. Geophys. Res. Lett.","DOI":"10.1029\/2005GL025285"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"B08410","DOI":"10.1029\/2007JB005338","article-title":"Estimating geocenter variations from a combination of GRACE and ocean model output","volume":"113","author":"Swenson","year":"2008","journal-title":"J. Geophys. Res.: Solid Earth"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1111\/j.1365-246X.2007.03556.x","article-title":"Inference of mantle viscosity from GRACE and relative sea level data","volume":"171","author":"Paulson","year":"2007","journal-title":"Geophys. J. Int."},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Chen, J.L., Wilson, C.R., Tapley, B.D., and Grand, S. (2007). GRACE detects coseismic and postseismic deformation from the Sumatra-Andaman earthquake. Geophys. Res. Lett.","DOI":"10.1029\/2007GL030356"},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Chen, J.L., Wilson, C.R., Tapley, B.D., Longuevergne, L., Yang, Z.L., and Scanlon, B.R. (2010). Recent La Plata basin drought conditions observed by satellite gravimetry. J. Geophys. Res.: Atmos.","DOI":"10.1029\/2010JD014689"},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Swenson, S., Yeh, P.J.F., Wahr, J., and Famiglietti, J. (2006). A comparison of terrestrial water storage variations from GRACE with in situ measurements from Illinois. Geophys. Res. Lett.","DOI":"10.1029\/2006GL026962"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1095","DOI":"10.1007\/s00190-009-0327-0","article-title":"On the postprocessing removal of correlated errors in GRACE temporal gravity field solutions","volume":"83","author":"Duan","year":"2009","journal-title":"J. Geod."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"30205","DOI":"10.1029\/98JB02844","article-title":"Time variability of the earth\u2019s gravity field: Hydrological and oceanic effects and their possible detection using GRACE","volume":"103","author":"Wahr","year":"1998","journal-title":"J. Geophys. Res.: Solid Earth"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/j.jog.2004.11.001","article-title":"On inversion for mass distribution from global (time-variable) gravity field","volume":"39","author":"Chao","year":"2005","journal-title":"J. Geodyn."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1111\/j.1365-246X.1995.tb01819.x","article-title":"The viscoelastic relaxation of a realistically stratified earth, and a further analysis of postglacial rebound","volume":"120","author":"Han","year":"1995","journal-title":"Geophys. J. Int."},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Andam-Akorful, S.A., Ferreira, V.G., Awange, J.L., Forootan, E., and He, X.F. (2014). Multi-model and multi-sensor estimations of evapotranspiration over the Volta Basin, West Africa. Int. J. Climatol.","DOI":"10.1002\/joc.4198"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"W04531","DOI":"10.1029\/2011WR011453","article-title":"Accuracy of scaled GRACE terrestrial water storage estimates","volume":"48","author":"Landerer","year":"2012","journal-title":"Water Resour. Res."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.jog.2012.01.009","article-title":"Assessment of terrestrial water contributions to polar motion from GRACE and hydrological models","volume":"62","author":"Jin","year":"2012","journal-title":"J. Geodyn."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1013","DOI":"10.1175\/BAMS-84-8-1013","article-title":"The common land model","volume":"84","author":"Dai","year":"2003","journal-title":"Bull. Am. Meteorol. Soc."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"W02508","DOI":"10.1029\/2011WR010993","article-title":"Monitoring groundwater storage changes in the highly seasonal humid tropics: Validation of GRACE measurements in the bengal basin","volume":"48","author":"Shamsudduha","year":"2012","journal-title":"Water Resour. Res."},{"key":"ref_50","unstructured":"Cunningham, W.L., Geiger, L.H., and Karavitis, G.A.U.S. Geological Survey Ground-Water Climate Response Network, Available online: http:\/\/pubs.usgs.gov\/fs\/2007\/3003\/pdf\/2007-3003-hires.pdf."},{"key":"ref_51","unstructured":"Fetter, C.W. (1994). Applied Hydrogeology, Prentice Hall. [3rd ed.]."},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Sun, A.Y., Green, R., Rodell, M., and Swenson, S. (2010). Inferring aquifer storage parameters using satellite and in situ measurements: Estimation under uncertainty. Geophys. Res. Lett.","DOI":"10.1029\/2010GL043231"},{"key":"ref_53","unstructured":"Heath, R.C. Basic Ground-Water Hydrology, Available online: http:\/\/pubs.er.usgs.gov\/publication\/wsp2220."},{"key":"ref_54","unstructured":"Joseph, R.L., and Eberts, S.M. Selected Data on Characteristics of Glacial-Deposit and Carbonate-Rock Aquifers, Midwestern Basins and Arches Region, Available online: http:\/\/pubs.er.usgs.gov\/publication\/ofr93627."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"W02433","DOI":"10.1029\/2006WR005779","article-title":"Analysis of terrestrial water storage changes from grace and gldas","volume":"44","author":"Syed","year":"2008","journal-title":"Water Resour. Res."},{"key":"ref_56","unstructured":"Shum, C.K., Guo, J.-Y., Hossain, F., Duan, J., Alsdorf, D.E., Duan, X.-J., Kuo, C.-Y., Lee, H., Schmidt, M., and Wang, L. (2011). Climate Change and Food Security in South Asia, Springer."},{"key":"ref_57","unstructured":"NOAA (2007). State of the Climate: Drought for September 2007, NOAA National Climatic Data Center."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"W07525","DOI":"10.1029\/2011WR011291","article-title":"Drought indicators based on model-assimilated gravity recovery and climate experiment (GRACE) terrestrial water storage observations","volume":"48","author":"Houborg","year":"2012","journal-title":"Water Resour. Res."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"7183","DOI":"10.1029\/2000JD900719","article-title":"Summarizing multiple aspects of model performance in a single diagram","volume":"106","author":"Taylor","year":"2001","journal-title":"J. Geophys. Res.: Atmos."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"3924","DOI":"10.1002\/grl.50790","article-title":"Anthropogenic impacts on mass change in North China","volume":"40","author":"Tang","year":"2013","journal-title":"Geophys. Res. Lett."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"W11517","DOI":"10.1029\/2009WR008564","article-title":"Grace hydrological estimates for small basins: Evaluating processing approaches on the high plains aquifer, USA","volume":"46","author":"Longuevergne","year":"2010","journal-title":"Water Resour. Res."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"1389","DOI":"10.1002\/2013GL058632","article-title":"Ensemble prediction and intercomparison analysis of grace time-variable gravity fieldmodels","volume":"41","author":"Sakumura","year":"2014","journal-title":"Geophys. Res. Lett."},{"key":"ref_63","first-page":"245","article-title":"Nonparametric tests against trend","volume":"13","author":"Mann","year":"1945","journal-title":"Econom. J. Econom. Soc."},{"key":"ref_64","unstructured":"Kendall, M.G. (1955). Rank Correlation Measures, Griffin."},{"key":"ref_65","unstructured":"Kenny, J.F., Barber, N.L., Hutson, S.S., Linsey, K.S., Lovelace, J.K., and Maupin, M.A. Estimated Use of Water in the United States in 2005, Available online: http:\/\/pubs.usgs.gov\/circ\/1344\/."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"L06401","DOI":"10.1029\/2005GL025305","article-title":"Accuracy of grace mass estimates","volume":"33","author":"Wahr","year":"2006","journal-title":"Geophys. Res. Lett."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/7\/1\/686\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T20:41:31Z","timestamp":1760215291000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/7\/1\/686"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,1,12]]},"references-count":66,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2015,1]]}},"alternative-id":["rs70100686"],"URL":"https:\/\/doi.org\/10.3390\/rs70100686","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,1,12]]}}}