Abstract
This study analyzes the impact of anthropogenic climate change in the hydroclimatology of Senegal with a focus over the lake of Guiers basin for the middle (2041–2060) and late twenty-first century (2080–2099). To this end, high-resolution multimodel ensemble based on regional climate model experiments considering two Representative Concentration Pathways (RCP4.5 and RCP8.5) is used. The results indicate that an elevated warming, leading to substantial increase of atmospheric water demand, is projected over the whole of Senegal. In the Lake basin, these increases in potential evapotranspiration (PE) range between 10 and 25 % in the near future and for RCP4.5 while for the far future and RCP8.5, they exceed 50 %. In addition, mean precipitation unveils contrasting changes with wetter (10 to 25 % more) conditions by the middle of the century and drier conditions (more than 50 %) during the late twenty-first century. Such changes cause more/less evapotranspiration and soil moisture respectively during the two future periods. Furthermore, surface runoff shows a tendency to increase in most areas amid few locations including the Lake basin with substantial reduction. Finally, it is found that while semi-arid climates develop in the RCP4.5 scenario, generalized arid conditions prevail over the whole Senegal for RCP8.5. It is thus evident that these future climate conditions substantially threaten freshwater availability for the country and irrigated cropping over the Lake basin. Therefore, strong governmental politics are needed to help design response options to cope with the challenges posed by the projected climate change for the country.
Similar content being viewed by others
References
Anyamba A, Small JL, Britch SC, Tucker CJ, Pak EW, Reynolds CA, Crutchfield J, Linthicum KJ (2014) Recent weather extremes and impacts on agricultural production and vector-borne disease outbreak patterns. PLoSONE 9:e92538. doi:10.1371/journal.pone.0092538
Boko M, Niang I, Nyong A, Vogel C, Githeko A, Medany M, Osman-Elasha B, Tabo R and Yanda, P (2007) Africa. Climate change 2007: impacts, adaptation and vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Parry ML, Canziani OF, Palutikof J, van der Linden PJ and Hanson CE, Eds., Cambridge University Press, Cambridge UK, 433–467.
Browne NAK, Sylla MB (2012) Regional climate model sensitivity to domain size for the simulation of the West African monsoon rainfall. Int J Geophys 625831. doi:10.1155/2012/625831
Diallo I, MB Sylla, F Giorgi, AT Gaye and M Camara (2012) Multi-model GCM-RCM ensemble based projections of temperature and precipitation over West Africa for the early 21st century. Int J Geophys Article ID 972896. doi:10.1155/2012/972896.
Diallo I, Bain CL, Gaye AT, Moufouma-Okia W, Niang C, Dieng MD, Graham R (2014) Simulation of the West African monsoon onset using the HadGEM3-RA regional climate model. Clim Dyn 43(3–4):575–594. doi:10.1007/s00382-014-2219-0
Diallo I, Giorgi F, Sukumaran S, Stordal F, Giuliani G (2015) Evaluation of RegCM4 driven by CAM4 over Southern Africa: mean climatology, interannual variability and daily extremes of wet season temperature and precipitation. Theor Appl Climatol 121:749–766. doi:10.1007/s00704-014-1260-6
Diallo I, Giorgi F, Deme A, Tall M, Mariotti L, Gaye AT (2016) Projected changes of summer monsoon extremes and hydroclimatic regimes over West Africa for the twenty-first century. Clim Dyn. doi:10.1007/s00382-016-3052-4
Druyan LM (2011) Studies of 21st-century precipitation trends over West Africa. Int J Climatol 31:1415–1572. doi:10.1002/joc.2180
Dunne JP, Jasmin J, Shevliakova E, Stouffer RJ, et al. (2013) GFDL’s ESM2 global coupled climate-carbon earth system models part II: carbon system formulation and baseline simulation characteristics. J Clim 26(7). doi:10.1175/JCLI-D-12-00150.1
El-Khoury A, O. Seidou, D.R. Lapen, Z. Que, M. Mohammadian, M. Sunohara, D. Bahram (2015) Combined impacts of future climate and land use changes on discharge, nitrogen and phosphorus loads for a Canadian river basin. J Environ Manag 151, 76–86.
Emanuel KA (1991) A scheme for representing cumulus convection in large-scale models. J Atmos Sci 48:2313–2335
Emanuel KA, Zivkovic-Rothman M (1999) Development and evaluation of a convection scheme for use in climate models. J Atmos Sci 56:1766–1782. doi:10.1175/1520-0469
Feddema JJ (2005) A revised Thornthwaite-type global climate classification. Phys Geogr 26(6):442–466
Giorgi F, Coppola E, Solmon F, Mariotti L, Sylla MB, Bi X, Elguindi N, Diro GT, Nair V, Giuliani G, Turuncoglu UU, Cozzini S, Güttler I, O’Brien TA, Tawfik AB, Shalaby A, Zakey AS, Steiner AL, Stordal F, Sloan LC, Brankovic C (2012) RegCM4: model description and preliminary tests over multiple CORDEX domains. Clim Res 52:7–29. doi:10.3354/cr01018
Grell G, Dudhia J, Stauffer DR (1994) A description of the fifth generation Penn State/NCAR Mesoscale Model (MM5). National Center for Atmospheric Research Tech Note NCAR/TN-398 + STR, NCAR, Boulder, CO
Hamon W (1963) Computation of direct runoff amounts from storm rainfall. Int Assoc Sci Hydrol Publ 63:52–62
IPCC (2014) Climate change 2014: impacts, adaptation, and vulnerability. Working Group II contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Available at: http://www.ipcc.ch/. Accessed June 2014
Jenkins GS, Gaye AT, Sylla B (2005) Late 20th century attribution of drying trends in the Sahel from the regional climate model (RegCM3). Geophys Res Lett 32:L22705. doi:10.1029/200 5GL024225
Jones C, Hughes J, Bellouin N, Hardiman S, Jones G, Knight J, et al. (2011) The HadGEM2-ES implementation of CMIP5 centennial simulations. Geosci Model Dev 4:543–570. doi:10.5194/gmd-4-543-2011
Lobell DB, Bänziger M, Magorokosho C, Vivek B (2011) Nonlinear heat effects on African maize as evidenced by historical yield trials. Nat Climate Change 1:42–45. doi:10.1038/nclimate1043
Mariotti L, Diallo I, Coppola E, Giorgi F (2014) Seasonal and intraseasonal changes of African monsoon climates in 21st century CORDEX projections. Clim Chang. doi:10.1007/s10584-014-1097-0
Mbaye ML, Hagemann S, Haensler A, Stacke T, Gaye AT, Afouda A (2015) Assessment of climate change impact on water resources in the Upper Senegal Basin (West Africa). Amer J Climate Change. doi:10.4236/ajcc.2015.41008
Moss RH, Edmonds JA, Hibbard KA, Manning MR, Rose SK, van Vuuren DP, Carter TR, Emori S, Kainuma M, Kram T, et al. (2010) The next generation of scenarios for climate change research and assessment. Nat 463:747–756
Oleson KW, Niu GY, Yang ZL, Lawrence DM, Thornton PE, Lawrence PJ, Stöckli R, Dickinson RE, Bonan GB, Levis S, Dai A, Qian T (2008) Improvements to the community land model and their impact on the hydrological cycle. J Geophys Res 113:G01021. doi:10.1029/2007JG000563
Paeth H, Born K, Podzun R, Jacob D (2005) Regional dynamical downscaling over West Africa: model evaluation and comparison of wet and dry years. Meteorol Z 14(3):349–367
Parry ML, Canziani OF, Palutikof JP, van der Linden PJ, Hanson CE (eds) (2007) Climate change 2007: impacts, adaptation and vulnerability. (Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change) Cambridge University Press, Cambridge.
Riahi K, Krey V, Rao S, Chirkov V, Fischer G, Kolp P, Kindermann G, Nakicenovic N, Rafai P (2011) RCP8.5: Exploring the consequence of high emission trajectories. Clim Chang. doi:10.1007/s10584-011-0149-y
Rummukainen M (2010) State-of-the-art with regional climate models. Clim Chang 1:82–86
Sylla MB, Gaye AT, Jenkins GS, Pal JS, Giorgi F (2010) Consistency of projected drought over the Sahel with changes in the monsoon circulation and extremes in a regional climate model projection. J Geophys Res 115:D16108. doi:10.1029/2009JD012983
Sylla MB, Gaye AT, Jenkins GS (2012) On the fine-scale topography regulating changes in atmospheric hydrological cycle and extreme rainfall over West Africa in a regional climate model projections. Int J Geophys. doi:10.1155/2012/981649
Sylla MB, Pal JS, Wang JL, Lawrence P (2015a) Impact of land surface characterization on regional climate modeling over West Africa. Clim Dyn. doi:10.1007/s00382-015-2603-4
Sylla MB, Giorgi F, Pal JS, Gibba P, Kebe I, Nikiema M (2015b) Projected changes in the annual cycle of high intensity precipitation events over West Africa for the late 21st century. J Clim 28:6475–6488. doi:10.1175/JCLI-D-14-00854.1
Sylla MB, Elguindi N, Giorgi F, Wisser D (2016) Projected robust shift of climate zones over West Africa in response to anthropogenic climate change for the late 21st century. Clim Chang 134(1–2):241–253
Taylor KE, Stouffer RJ, Meehl GA (2012) An overview of CMIP5 and the experiment design. Bull Am Meteor Soc 93:485–498
Thomson AM, Calvin KV, Smith SJ, Kyle GP, Volke A, Patel P, Delgado-Arias S, Bond-Lamberty B, Wise MA, Clarke LE, Edmonds JA (2011) RCP4.5: A pathway for stabilization of radiative forcing by 2100. Clim Chang. doi:10.1007/s10584-011-0151-4
Thornthwaite C, Mather J (1955) The water balance. Publ Climatol 8:1–104
Torma C, Giorgi F, Coppola E (2015) Added value of regional climate modeling over areas characterized by complex terrain-precipitation over the Alps. J Geophys Res Atmos 120:3957–3972. doi:10.1002/2014JD022781
Van Vuuren DP, Edmonds J, Kainuma MLT, Riahi K, et al. (2011) Representative concentration pathways: an overview. Clim Chang. doi:10.1007/s10584-011-0148-z
Willmott C, Feddema J (1992) A more rational climatic moisture index. Prof Geogr 44(1):84–88
Wilson CO, Weng Q (2011) Simulating the impact of future land use and climate changes on surface water quality in the Des Plaines River watershed Chicago metropolitan statistical area Illinois. Sci Total Environ 409(20):4387–4405
Zeng X, Zhao M, Dickinson RE (1998) Intercomparison of bulk aerodynamic algorithms for the computation of sea surface fluxes using TOGA COARE and TAO data. J Clim 11:2628–2644. doi:10.1175/1520-0442(1998)011,2628: IOBAAF.2.0.CO;2.
Acknowledgments
This work is fully supported by the United States Agency for International Development (USAID) through the Partnerships for Enhanced Engagement in Research (PEER Project 2-344). The simulations for this study were done at the Abdus Salam International Centre for Theoretical Physics (ICTP). Therefore, we would like to thank the Earth System Physics (ESP) section for their support. We are also grateful to the anonymous reviewers whose comments have helped to improve the quality of this paper.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tall, M., Sylla, M.B., Diallo, I. et al. Projected impact of climate change in the hydroclimatology of Senegal with a focus over the Lake of Guiers for the twenty-first century. Theor Appl Climatol 129, 655–665 (2017). https://doi.org/10.1007/s00704-016-1805-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00704-016-1805-y