Abstract
AbstractThe Ruhezamyenda catchment in Uganda includes a unique lake, Lake Bunyonyi, and is threatened by increasing social and environmental pressures. The COSERO hydrological model was used to assess the impact of climate change on future surface runoff and evapotranspiration in the Lake Bunyonyi catchment (381 km2). The model was forced with an ensemble of CMIP5 global climate model (GCM) simulations for the mid-term future (2041–2070) and for the far future (2071–2100), each with RCP4.5 and RCP8.5. In the Ruhezamyenda catchment, compared to 1971–2000, the median of all GCMs (for both RCPs) showed the mean monthly air temperature to increase by approximately 1.5 to 3.0 °C in the mid-term future and by roughly 2.0 to 4.5 °C in the far future. The mean annual precipitation is generally projected to increase, with future changes between − 25 and + 75% (RCP8.5). AET in the Lake Bunyonyi catchment was simulated to increase for the future by approximately + 8 mm/month in the median of all GCMs for RCP8.5 for the far future. The runoff for future periods showed much uncertainty, but with an overall increasing trend. A combination of no-regrets adaptation options in the five categories of: governance; communication and capacity development; water, soil, land management and livelihoods improvement; data management; and research, was identified and validated with stakeholders, who also identified additional adaptation actions based on the model results. This study contributes to improving scientific knowledge on the impacts of climate change on water resources in Uganda with the purpose to support adaptation.
Publisher
Springer Science and Business Media LLC
Subject
Atmospheric Science,Global and Planetary Change
Reference50 articles.
1. Adhikari U, Nejadhashemi AP, Herman MR (2016) A review of climate change impacts on water resources in East Africa. Trans ASABE. https://doi.org/10.13031/trans.58.10907
2. Andersson L, Wilk J, Graham LP, Warburton M (2013) Design and test of a model-assisted participatory process for the formulation of a local climate adaptation plan. Clim Dev. https://doi.org/10.1080/17565529.2013.812955
3. Bagamba F, Bashaasha B, Claessens L, Antle J (2012) Assessing climate change impacts and adaptation strategies for smallholder agricultural systems in Uganda. Afr Crop Sci J ISSN 1021-9730/2012
4. Bornemann JF, Rowell DP, Evans B et al (2019) Future changes and uncertainty in decision-relevant measures of East African climate. Clim Chang. https://doi.org/10.1007/s10584-019-02499-2
5. Call M, Gray C, Jagger P (2019) Smallholder responses to climate anomalies in rural Uganda. World Dev. https://doi.org/10.1016/j.worlddev.2018.11.009
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