A. Ickowicz, V. Ancey, C. Corniaux, G. Duteurtre, R. Poccard-chappuis et al., Crop-livestock production systems in the Sahel-Increasing resilience for adaptation to climate change and preserving food security, Proceedings of the Building Resilience for Adaptation to Climate Change in the Agriculture Sector, pp.261-294, 2012.

K. E. Taylor, R. J. Stouffer, and G. A. Meehl, An overview of CMIP5 and the experiment design, Bull. Am. Meteorol. Soc, vol.93, pp.485-498, 2012.

B. Kirtman, S. B. Power, J. A. Adedoyin, G. J. Boer, R. Bojariu et al., Near-term climate change: Projections and predictability. In Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, 2013.

J. H. Christensen, K. Kumar, E. Aldrian, S. An, I. F. Cavalcanti et al., Climate phenomena and their relevance for future regional climate change, Climate Change 2013: The Physical Science Basis. Contribution of Working Group

T. F. Stocker, G. Qin, M. Plattner, S. K. Tignor, J. Allen et al., , 2013.

P. Oettli, B. Sultan, C. Baron, and M. Vrac, Are regional climate models relevant for crop yield prediction in West Africa?, Env. Res. Lett, vol.6, p.7585, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00755374

A. M. Famien, S. Janicot, A. D. Ochou, M. Vrac, D. Defrance et al., A bias-corrected CMIP5 dataset for Africa using the CDF-t method-A contribution to agricultural impact studies, Earth Syst. Dyn, vol.9, pp.313-338, 2018.
URL : https://hal.archives-ouvertes.fr/ird-01763026

J. Knox, T. Hess, A. Daccache, and T. Wheeler, Climate change impacts on crop productivity in Africa and South Asia. Env. Res. Lett, vol.7, p.34032, 2012.

J. Kellner, T. Houska, R. Manderscheid, H. Weigel, L. Breuer et al., Response of maize biomass and soil water fluxes on elevated CO2 and drought-From field experiments to process-based simulations, Glob. Chang. Biol, vol.25, pp.2947-2957, 2019.

J. L. Durand, K. Delusca, K. Boote, J. Lizaso, R. Manderscheid et al., How accurately do maize crop models simulate the interactions of atmospheric CO 2 concentration levels with limited water supply on water use and yield?, Eur. J. Agron, vol.100, pp.67-75, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01595483

S. Kc and W. Lutz, The human core of the shared socioeconomic pathways: Population scenarios by age, sex and level of education for all countries to 2100, Glob. Environ. Chang, vol.42, pp.181-192, 2014.

, United Nations-Department of Economic and Social Affairs, 2017.

, United Nations-Department of Economic and Social Affairs, p.22, 2019.

B. Sultan, B. Parkes, and M. Gaetani, Direct and indirect effects of CO 2 increase on crop yield in West Africa, Int. J. Clim, vol.39, pp.2400-2411, 2019.
URL : https://hal.archives-ouvertes.fr/insu-01964572

B. Parkes, D. Defrance, B. Sultan, P. Ciais, and X. Wang, Projected changes in crop yield mean and variability over West Africa in a world 1.5K warmer than the pre-industrial era, Earth Syst. Dyn, vol.9, pp.119-134, 2018.
URL : https://hal.archives-ouvertes.fr/ird-01763011

B. K. Kogo, L. Kumar, R. Koech, and P. Langat, Modelling impacts of climate change on maize (Zea mays L.) Growth and productivity: A review of models, outputs and limitations, J. Geosci. Env. Prot, vol.7, pp.76-95, 2019.

P. Michelangeli, M. Vrac, and H. Loukos, Probabilistic downscaling approaches: Application to wind cumulative distribution functions, Geophys. Res. Lett, vol.36, issue.11, 2009.

M. Vrac, P. Drobinski, A. Merlo, M. Herrmann, C. Lavaysse et al., Dynamical and statistical downscaling of the French Mediterranean climate: Uncertainty assessment, Nat. Hazards Earth Syst. Sci, vol.12, pp.2769-2784, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00961603

G. P. Weedon, G. Balsamo, N. Bellouin, S. Gomes, M. J. Best et al., The WFDEI meteorological forcing data set: WATCH Forcing Data methodology applied to ERA-Interim reanalysis data, Water Resour. Res, vol.50, pp.7505-7514, 2014.

R. H. Moss, J. A. Edmonds, K. A. Hibbard, M. R. Manning, S. K. Rose et al., The next generation of scenarios for climate change research and assessment, Nature, vol.463, pp.747-756, 2010.

M. Collins, R. Knutti, J. Arblaster, J. Dufresne, T. Fichefet et al., Long-term climate change: Projections, commitments and irreversibility, Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment

T. F. Stocker, G. Qin, M. Plattner, S. K. Tignor, J. Allen et al., , 2013.

C. Baron, B. Sultan, M. Balme, B. Sarr, S. Traore et al., From GCM grid cell to agricultural plot: Scale issues affecting modelling of climate impact, Philos. Trans. R. Soc. B Biol. Sci, vol.360, pp.2095-2108, 2005.
URL : https://hal.archives-ouvertes.fr/hal-00122721

M. Dingkuhn, C. Baron, V. Bonnal, F. Maraux, B. Sarr et al., Decision support tools for rainfed crops in the Sahel at the plot and regional scales. In Decision Support Tools for Smallholder Agriculture in Sub-Saharan Africa-A Practical Guide', vol.IFDC, pp.127-139, 2003.

M. Kouressy, M. Dingkuhn, M. Vaksmann, and A. Bryan, Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod, Agr. For. Meteorol, vol.148, pp.357-371, 2008.

S. B. Traoré, A. Alhassane, B. Muller, M. Kouressy, L. Somé et al., Characterizing and modeling the diversity of cropping situations under climatic constraints in West Africa, Atmos. Sci. Lett, vol.12, pp.89-95, 2011.

B. Sultan, P. Roudier, P. Quirion, A. Alhassane, B. Muller et al., Assessing climate change impacts on sorghum and millet yields in the Sudanian and Sahelian savannas of West Africa, Environ. Res. Lett, vol.8, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00857331

B. Sultan, D. Defrance, and T. Iizumi, Evidence of crop production losses in West Africa due to historical global warming in two crop models, Sci. Rep, vol.9, 2019.
URL : https://hal.archives-ouvertes.fr/hal-02281000

C. Baron, V. Bonnal, M. Dingkuhn, F. Maraux, M. Sarr et al., Système d'analyse regional des risques agroclimatiques-habille (System for regional analysis of agro-climatic risks). In Decision Support Tools for Smallholder Agriculture in Sub-saharan Africa: A Practical Guide, vol.IFDC, pp.192-194, 2003.

J. Ramarohetra and B. Sultan, Impact of ET 0 method on the simulation of historical and future crop yields: A case study of millet growth in Senegal, Int. J. Climatol, vol.38, issue.2, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01787268

J. A. Bunce, Carbon dioxide effects on stomatal responses to the environment and water use by crops under field conditions, Oecologia, vol.140, pp.1-10, 2004.

A. Olioso, F. Huard, and L. Guilioni, Prise en compte des effets du CO 2 sur le calcul de l'évapotranspiration de référence, Proceedings of the Climator, pp.17-18, 2010.

J. Calvet, J. Noilhan, J. Roujean, P. Bessemoulin, M. Cabelguenne et al., An interactive vegetation SVAT model tested against data from six contrasting sites, Agric. Meteorol, vol.92, pp.73-95, 1998.
URL : https://hal.archives-ouvertes.fr/hal-02696231

M. Erbs, R. Manderscheid, A. Luig, H. Kage, and H. Weigel, A field experiment to test interactive effects of elevated CO2 concentration (FACE) and elevated canopy temperature (FATE) on wheat, Procedia Env. Sci, vol.29, pp.60-61, 2015.

R. Manderscheid, M. Erbs, and H. Weigel, Interactive effects of free-air CO 2 enrichment and drought stress on maize growth, Eur. J. Agron, vol.52, pp.11-21, 2014.

M. Biasutti, Forced Sahel rainfall trends in the CMIP5 archive, J. Geophys. Res. Atmos, vol.118, pp.1613-1623, 2013.

A. J. Challinor, B. Parkes, and J. Ramirez-villegas, Crop yield response to climate change varies with cropping intensity, Glob. Chang. Biol, vol.21, pp.1679-1688, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01496622

K. F. Ahmed, G. Wang, M. Yu, J. Koo, and L. You, Potential impact of climate change on cereal crop yield in West Africa, Clim. Chang, vol.133, pp.321-334, 2015.

B. Faye, H. Webber, J. B. Naab, D. S. Maccarthy, M. Adam et al., Impacts of 1.5 versus 2.0 ? C on cereal yields in the West African Sudan Savanna, Environ. Res. Lett, vol.13, p.34014, 2018.

J. Fusillier, Bilan et perspectives de diffusion de la maïsiculture en zone de savane d'Afrique de l'Ouest, Proceedings of the valorisation du maïs à l'échelon villageois en Afrique de l'Ouest: Actes du séminaire "Maîs prospère, pp.25-28, 1994.

D. P. Rowell, C. A. Senior, M. Vellinga, and R. J. Graham, Can climate projection uncertainty be constrained over Africa using metrics of contemporary performance?, Clim. Chang, vol.134, pp.621-633, 2016.

M. O. Adeniyi, The consequences of the IPCC AR5 RCPs 4.5 and 8.5 climate change scenarios on precipitation in West Africa, Clim. Chang, vol.139, pp.245-263, 2016.

M. Biasutti and A. H. Sobel, Delayed Sahel rainfall and global seasonal cycle in a warmer climate, Geophys. Res. Lett, vol.36, pp.1-5, 2009.

P. Monerie, E. Sanchez-gomez, and J. Boé, On the range of future Sahel precipitation projections and the selection of a sub-sample of CMIP5 models for impact studies, Clim. Dyn, vol.48, pp.2751-2770, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01519092

D. Deryng, J. Elliott, C. Folberth, C. Müller, T. A. Pugh et al., Regional disparities in the beneficial effects of rising CO2 concentrations on crop water productivity, Nat. Clim. Chang, vol.6, pp.786-790, 2016.

J. C. Caldwell, The Sahelian Drought and Its Demographic Implications, 1976.

A. A. Afolayan and I. O. Adelekan, The role of climatic variations on migration and human health in, Africa. Environmentalist, vol.18, pp.213-218, 1999.

M. Ezra, Demographic responses to environmental stress in the drought-and famine-prone areas of Northern Ethiopia, Int. J. Popul. Geogr, vol.7, pp.259-281, 2001.

X. Tian and X. Yu, Crop yield gap and yield convergence in African countries. Food Secur, vol.11, pp.1305-1319, 2019.

M. K. Van-ittersum, L. G. Van-bussel, J. Wolf, P. Grassini, J. Van-wart et al., Can sub-Saharan Africa feed itself ?, vol.113, pp.14964-14969, 2016.

A. J. Challinor, J. Watson, D. B. Lobell, S. M. Howden, D. R. Smith et al., A meta-analysis of crop yield under climate change and adaptation, Nat. Clim. Chang, vol.4, pp.287-291, 2014.

S. Lebel, L. Fleskens, and P. M. Forster, Evaluation of In situ rainwater harvesting as an adaptation strategy to climate change for maize production in Rainfed Africa, Water Resour. Manag, pp.4803-4816, 2015.

B. Sultan, K. Guan, M. Kouressy, M. Biasutti, C. Piani et al., Robust features of future climate change impacts on sorghum yields in West Africa, Env. Res. Lett, vol.9, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01317169

N. C. Turner and K. P. Rao, Simulation analysis of factors affecting sorghum yield at selected sites in eastern and southern Africa, with emphasis on increasing temperatures, Agric. Syst, vol.121, pp.53-62, 2013.

K. Guan, B. Sultan, M. Biasutti, C. Baron, and D. B. Lobell, Agricultural and forest meteorology assessing climate adaptation options and uncertainties for cereal systems in West Africa, Agric. Meteorol, vol.232, pp.291-305, 2017.

T. Oweis and A. Hachum, Optimizing supplemental irrigation: Tradeoffs between profitability and sustainability. Agric. Water Manag, vol.96, pp.511-516, 2009.

C. Bren, F. Reitsma, G. Baiocchi, S. Barthel, B. Güneralp et al., Future urban land expansion and implications for global croplands, vol.114, pp.8939-8944, 2017.

J. Chamberlin, T. S. Jayne, and D. Headey, Scarcity amidst abundance ? Reassessing the potential for cropland expansion in Africa, Food Policy, vol.48, pp.51-65, 2015.

R. A. Mcleman and L. M. Hunter, Migration in the context of vulnerability and adaptation to climate change: Insights from analogues, Wiley Interdiscip. Rev. Clim. Chang, vol.1, pp.450-461, 2010.

A. Missirian and W. Schlenker, Asylum applications respond to temperature fluctuations, vol.358, pp.1610-1614, 2017.

S. Feng, A. B. Krueger, and M. Oppenheimer, Linkages among climate change, crop yields and Mexico-US cross-border migration, Proc. Natl. Acad. Sci, vol.107, pp.14257-14262, 2010.

K. Van-der-geest, North-South migration in Ghana: What role for the environment?, Int. Migr, vol.49, pp.69-94, 2011.

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