, Variabilibilty and Change-Hydrological Impacts, Proceedings of the Fifth FRIEND World, vol.725

. Conference, , vol.308

J. W. Hurrell, Decadal trends in the north atlantic oscillation: regional temperatures and 727 precipitation, pp.676-679, 1995.

J. W. Hurrell, Y. Kushnir, G. Ottersen, and M. Visbeck, , 2003.

J. W. Hurrell, Y. Kushnir, and G. Ottersen,

, Monograph Series. American Geopphysical Union, pp.1-35

, Global Groundwater Monitoring Network-GGMN, 2017.

I. , Transboundary Aquifers of the World, 2015.

S. Janicot, G. Ganiaux, F. Chauvin, G. De-coetlogon, B. Fontaine et al., , p.736

J. P. Lafore, C. Lavaysse, S. L. Lavender, S. Leroux, R. Marteau et al., , p.737

R. Roehrig, B. Sultan, and C. M. Taylor, Intraseasonal variability of the West African 738 monsoon, Atmospheric Science Letters, vol.12, issue.1, pp.58-66, 2011.

M. Jung, M. Reichstein, P. Ciais, S. I. Seneviratne, J. Sheffield et al., , p.740

A. Cascatti, J. Chen, R. De-jeu, A. J. Dolman, W. Eugster et al., , p.742

D. Richardson, A. D. Roupsard, O. Running, S. Tomelleri, E. Viovy et al., , p.743

C. Wood, E. Zaehle, S. Zhang, and K. , Recent decline in the global land 744 evapotranspiration trend due to limited moisture supply, Nature, vol.467, pp.951-954, 2010.

A. Y. Sun, B. R. Scanlon, A. Agha-kouchal, and Z. Zhang, Using GRACE satellite 901 gravimetry for assessing large-scale hydrological extremes, Remote Sensing, vol.9, p.1312, 2017.

Q. Sun, C. Miao, Q. Duan, H. Ashouri, S. Sorooshian et al., A review of global 904 precipitation data Ssets: Data Sources, estimation, and intercomparisons, p.905, 2018.

. Geophysics, , vol.56

S. Swenson and J. Wahr, Post-processing removal of correlated errors in GRACE 907 data, Geophysical Research Letters, vol.33, 2006.

R. G. Taylor, A. D. Koussis, and C. Tindimugaya, Groundwater and climate in Africa-a 909 review, Hydrological Sciences Journal, vol.54, pp.655-664, 2009.

R. G. Taylor, B. Scanlon, P. Doll, M. Rodell, R. Van-beek et al., , p.911

M. Leblanc, J. S. Famiglietti, M. Edmunds, L. Konikow, T. R. Green et al., , p.912

M. F. Bierkens, A. Macdonald, Y. Fan, R. M. Maxwell, Y. Yechieli et al., , p.913

D. M. Shamsudduha, M. Hiscock, K. Yeh, P. J. Holman, I. Treidel et al., Ground 914 water and climate change, Nature Climate Change, vol.3, pp.322-329, 2013.

R. G. Taylor, M. C. Todd, L. Kongola, L. Maurice, E. Nahozya et al.,

A. M. , Evidence of the dependence of groundwater resources on extreme rainfall in East, 2013.

, Africa. Nature Climate Change, vol.3, pp.374-378

A. Timmermann, Y. Okumura, S. I. An, A. Clement, B. Dong et al., , p.919

J. H. Jungclaus, M. Renold, T. F. Stocker, R. J. Stouffer, R. Sutton et al., , p.920, 2007.

, The influence of a weakening of the Atlantic meridional overturning circulation on ENSO, Journal of Climate, vol.20, issue.19, pp.4899-4919

C. Torrence and G. P. Compo, A practical guide to wavelet analysis, Bulletin of the American, vol.923, 1998.

, Meteorological Society, vol.79, issue.1, pp.61-78

H. Treidel, J. L. Martin-bordes, and J. J. Gurdak, Climate change effects on 925 groundwater resources: A global synthesis of findings and recommendations, International 926 Association of Hydrogeologists (IAH)-International Contribution to Hydrogeology, pp.978-0415689366, 2012.

K. E. Trenberth, A. Dai, G. Van-der-schrier, P. D. Jones, J. Barichivich et al., , p.929

J. Sheffield, Global warming and changes in drought, Nature Climate Change, vol.4, p.22, 2014.

A. Tuinhof, S. Foster, F. Van-steenbergen, A. Talbi, and M. Wishart, Appropriate 932 groundwater management policy for Sub-Saharan Africa in face of demographic pressure and 933 climatic variability. GW MATE strategic overview series, vol.5, 2011.

, IWRM implementation in basins, sub-basins and aquifers: state of the art 935 review. World Water Assessment Programme, Side publications series, Insights, UNESCO, pp.978-92, 2009.

, Stampriet Transboundary Aquifer System assessment, Governance, p.938, 2016.

, Groundwater Resources in Transboundary Aquifers, p.939

U. Unesco, Step-by-step methodology for monitoring transboundary 941 cooperation, Integrated Monitoring Guide for SDG 6, 2017.

J. Van-der-gun, Groundwater and global change: trends, opportunities and challenges, 2012.

, Side publication series, World Water Assessment Programme

S. Vasollo, , 2017.

C. J. Vorosmarty, E. M. Douglas, P. A. Green, and C. Revenga, Geospatial indicators of 947 emerging water stress: an application to Africa, Ambio, vol.34, issue.3, pp.230-236, 2005.

Y. Wada and M. F. Bierkens, Sustainability of global water use: past reconstruction and 949 future projections, Environmental Research Letters, vol.9, 2014.

Y. Wada, L. P. Van-beek, and C. M. Van-kempen, Global depletion of groundwater 951 resources, Geophysical Research Letters, vol.37, issue.20, 2010.

S. .. Wang, J. Huang, Y. He, and Y. Guan, Combined effects of the Pacific Decadal 953 Oscillation and El Niño-Southern Oscillation on Global Land Dry-Wet Changes, 2014.

, Reports, vol.4

S. P. Wani, T. K. Sreedevi, and J. Rockström, Rain-fed agriculture-Past trend and future 956 prospects, 2009.

. Potential, Comprehensive Assessment of Water Management in Agriculture Series, CAB 958 International, pp.1-35

R. Washington, R. James, H. Pearce, W. M. Pokam, and W. Moufouma-okia, , 2013.

, Basin rainfall climatology: Can we believe the climate models? Philosophical Transactions of 961 the Royal Society, London, Ser. B, vol.368, 1625.

. Wmo, The adequacy of hydrological networks: a global assessment, 1996.

Y. Zhang, J. M. Wallace, and D. S. Battisti, ENSO-like interdecadal variability, Journal, p.966, 1997.

. Climate, , vol.10, pp.1004-1020