Hydropower impact on the river flow of a humid regional climate
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Hydropower impact on the river flow of a humid regional climate Julian David Hunt 1 & Giacomo Falchetta 2 & Behnam Zakeri 1,3 & Andreas Nascimento 4 & Paulo Smith Schneider 5 & Natália Assis Brasil Weber 5 & André Luiz Amarante Mesquita 6 & Paulo Sergio Franco Barbosa 7 & Nivalde José de Castro 8 Received: 26 February 2020 / Accepted: 10 August 2020/ # The Author(s) 2020
Abstract
Land use and water management have considerable impacts on regional climates. This paper proposes that in humid regions with low wind patterns the construction of hydropower storage reservoirs contributes to the increases in the probability of precipitation in the regional climate. This observation has been tested with a methodology that calculates the cumulative influence of reservoir construction in the basins surrounding with a proposed index named Cumulative Impact of Existing Reservoirs, and compares this index with the historical flow of the rivers. It was found that the construction of reservoirs in Brazil had a considerable impact on its river flows. Keywords Land use . Regional climate . Water management . Drought
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10584-02002828-w) contains supplementary material, which is available to authorized users.
* Julian David Hunt [email protected]
1
International Institute of Applied Systems Analysis (IIASA), Vienna, Austria
2
FEEM-Fondazione Eni Enrico Mattei, Milan, Italy
3
Sustainable Energy Planning Research Group, Aalborg University of Copenhagen, Copenhagen, Denmark
4
Federal University of Espirito Santo, Vitória, Brazil
5
Federal University of Rio Grande do Sul, Porto Alegre, Brazil
6
Federal University of Pará, Belém, Brazil
7
Núcleo Interdisciplinar de Planejamento Energético, University of Campinas, Campinas, Brazil
8
Grupo de Estudos do Setor Elétrico, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
Climatic Change
1 Introduction Land use can have a substantial impact on the climate and precipitation profile of a region. These impacts can be very diverse. For instance, conversion of forest into agricultural land affects precipitation patterns (Li et al. 2009; Adnana and Atkinson 2011; Price 2011), the impact of deforestation can affect regional average temperatures (Bonan 1997) as well as other impacts (DeAngelis et al. 2010; Mueller et al. 2015; Chen and Dirmeyer 2017). Apart from the changes in land use, water consumption patterns, which affect the evapotranspiration of a region, also affect the regional climate (Hunt and Leal Filho 2018; Liu et al. 2018; Zou et al. 2018). A particular area of research that has gained much attention is the impact of agriculture irrigation on regional temperature and precipitation (Kueppers et al. 2007; Thiery et al. 2017; Chen and Jeong 2018; Chen and Dirmeyer 2019). Looking in detail into these studies, it can be concluded that agricultural irrigation increases the humidity of the soil and atmosphere, and for evaporation to occur, water extracts heat from the air
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