The Impact of Climate Change on Water Resource Availability in a Trans-Boundary Basin in West Africa: The Case of Sassandra

被引：33

作者：

Coulibaly, Naga ^{[1
]}

Coulibaly, Talnan Jean Honore ^{[1
]}

Mpakama, Ziyanda ^{[2
]}

Savane, Issiaka ^{[1
]}

机构：

[1] Univ Nangui Abrogoua, Lab Geosci & Environm, UFR Sci & Gest Environm, Abidjan, Cote Ivoire

[2] Stockholm Int Water Inst, Programme Manager Africa Reg Ctr, ZA-0181 Pretoria, South Africa

来源：

HYDROLOGY | 2018年 / 5卷 / 01期

关键词：

climate change; GR2M; hydrologic modeling; transboundary river; West Africa;

D O I：

10.3390/hydrology5010012

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

In the context of climate change in West Africa characterized by a reduction of precipitation, this study was conducted to evaluate the impact of climate change on water resources from now to the end of the 21st century in the transboundary watershed of the Sassandra River shared by Guinea and Cote d'Ivoire. Historical and future climate data of Representative Concentration Pathways (RCPs) 4.5 and 8.5 were projected with the Abdus Salam International Centre for Theoretical Physics (ICTP) Regional Climate Model (RegCM4). The hydrological modeling of the river basin was carried out with the conceptual hydrological model, GR2M, a monthly time steps model that allows for the assessment of the discharge of the Sassandra River for each climate scenario according to the time periods 2021-2040 (Horizon 2030), 2041-2060 (Horizon 2050), 2061-2080 (Horizon 2050), and 2081-2100 (Horizon 2090). The results show a reduction in annual discharge when compared to the baseline (1961-1980). For RCP 4.5, the observed values go from 1.2% in 2030 to 2.3% in 2070 and rise to -2.1% in 2090. Concerning RCP 8.5, we saw a variation from -4.2 to -7.9% in Horizons 2030 and 2090, respectively. With the general decrease in rainfall in West Africa, it is appropriate to assess the impact on water resources of the largest rivers (Niger, Gambia, and Senegal) that irrigate the Sahelo-Saharian zone.

引用

页数：13

共 50 条

[11]

Frederic J., 2006, VERTIGO, V7, P1

[12] RegCM4: model description and preliminary tests over multiple CORDEX domains [J].

Giorgi, F. ;

Coppola, E. ;

Solmon, F. ;

Mariotti, L. ;

Sylla, M. B. ;

Bi, X. ;

Elguindi, N. ;

Diro, G. T. ;

Nair, V. ;

Giuliani, G. ;

Turuncoglu, U. U. ;

Cozzini, S. ;

Guettler, I. ;

O'Brien, T. A. ;

Tawfik, A. B. ;

Shalaby, A. ;

Zakey, A. S. ;

Steiner, A. L. ;

Stordal, F. ;

Sloan, L. C. ;

Brankovic, C. .

CLIMATE RESEARCH, 2012, 52 (01) :7-29

[13]

GOULA B.T.A., 2007, J SCI HYDROLOGIQUES, V52, P49, DOI DOI 10.1623/HYSJ.52.1.49

[14]

Goula B.T.A., 2006, VERTIGO, V7, DOI 10.4000/vertigo.2038

[15]

Guillaumet J. L., 1971, MILIEU NATUREL COTE, V50, P161

[16] Changes in rainfall regime over Burkina Faso under the climate change conditions simulated by 5 regional climate models [J].

Ibrahim, Boubacar ;

Karambiri, Harouna ;

Polcher, Jan ;

Yacouba, Hamma ;

Ribstein, Pierre .

CLIMATE DYNAMICS, 2014, 42 (5-6) :1363-1381

[17]

Konan B, 2002, THESIS

[18]

Kouakou K. E., 2011, THESIS

[19]

Kouakou KE., 2007, EUR J RES, V16, P31

[20]

Kouakou KE, 2016, INT J INNOV APPL STU, V15, P799

← 1 2 3 4 5 →