caa a22 4500 445815205 CHVBK 20180317145225.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10040-011-0724-3 doi (NATIONALLICENCE)springer-10.1007/s10040-011-0724-3 Groundwater storage variability and annual recharge using well-hydrograph and GRACE satellite data [Elektronische Daten] [Chris Henry, Diana Allen, Jianliang Huang] Variations du stockage et de la recharge annuelle d'une nappe basées sur hydrogrammes de puits et données satellitaires GRACE Most studies using GRACE (Gravity Recovery and Climate Experiment) data for examining water storage anomalies have rich hydrogeological databases. Here, GRACE data are analyzed for southern Mali, Africa, a region with sparse hydrogeological data. GRACE data (2002-2008) did not overlap with observed groundwater-level data (1982-2002). Terrestrial water storage from GRACE was corrected for soil moisture using the Global Land Data Assimilation System (GLDAS) model to obtain monthly groundwater storage anomalies and annual net recharge. Historical storage anomalies and net recharge were determined using the water-table fluctuation method for available observation wells. Average annual net recharge averaged 149.1mm (or 16.4% of annual rainfall) and 149.7mm (14.8%) from historical water level and GRACE data, respectively. Monthly storage anomaly lows and peaks were observed in May and September, respectively, but have a shift in peak to November using the corrected GRACE data, suggesting that the GLDAS model may poorly predict the timing of soil-water storage in this region. Notwithstanding problems with the GLDAS model, the soil moisture-corrected GRACE data accurately predict the relative timing and magnitude of groundwater-storage changes, suggesting that GRACE data are valuable for identifying long-term regional changes in groundwater storage in areas with sparse hydrogeological data. Springer-Verlag, 2011 GRACE satellite nationallicence Groundwater storage nationallicence Groundwater recharge nationallicence Mali nationallicence Africa nationallicence Henry Chris Department of Earth Sciences, Simon Fraser University, V5A 1S6, Burnaby, British Columbia, Canada aut Allen Diana Department of Earth Sciences, Simon Fraser University, V5A 1S6, Burnaby, British Columbia, Canada aut Huang Jianliang Geodetic Survey Division, Canadian Centre for Remote Sensing, Natural Resources Canada, K1A 0E9, Ottawa, ON, Canada aut Hydrogeology Journal Springer-Verlag 19/4(2011-06-01), 741-755 1431-2174 19:4<741 2011 19 10040 https://doi.org/10.1007/s10040-011-0724-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-011-0724-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Henry Chris Department of Earth Sciences, Simon Fraser University, V5A 1S6, Burnaby, British Columbia, Canada aut NATIONALLICENCE 700 1- Allen Diana Department of Earth Sciences, Simon Fraser University, V5A 1S6, Burnaby, British Columbia, Canada aut NATIONALLICENCE 700 1- Huang Jianliang Geodetic Survey Division, Canadian Centre for Remote Sensing, Natural Resources Canada, K1A 0E9, Ottawa, ON, Canada aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/4(2011-06-01), 741-755 1431-2174 19:4<741 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer