Climate change enhances deepwater warming of subtropical reservoirs: evidence from hydrodynamic modelling

Laura Melo Vieira Soares (), Maria Calijuri (), Talita Fernanda Silva () and Evlyn Marcia Leão Novo ()
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Laura Melo Vieira Soares: University of São Paulo at São Carlos School of Engineering
Maria Calijuri: University of São Paulo at São Carlos School of Engineering
Talita Fernanda Silva: Universidade Federal de Minas Gerais
Evlyn Marcia Leão Novo: National Institute of Space Research (INPE)

Climatic Change, 2021, vol. 166, issue 1, No 21, 19 pages

Abstract: Abstract Lake surface warming and thermal responses to climate change have been widely reported, especially in temperate regions. Evidence of reservoir response in low latitudes is still limited. In this study, the vertical profile of water temperature in the Barra Bonita Reservoir (Brazil) is simulated using the one-dimensional General Lake Model (GLM), calibrated, and validated using in-situ data. Water temperature and reservoir hydrodynamics are simulated over 26 years (1993–2018) to investigate warming trends, seasonal patterns, Schmidt stability, and the number of stratified days per year. Results indicate that the reservoir has experienced significant warming since 1993 related to increasing air temperature and decreasing wind speed. Water temperature increases (p value

Keywords: Hydrodynamics; Climate forcing; Thermal structure; Temporal trends; Sen’s estimator of slope; General Lake Model (GLM) (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10584-021-03124-x

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