• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Impacts of climate change on temperature and evaporation from a large reservoir in Australia

    Thumbnail
    View/Open
    82224_1.pdf (213.4Kb)
    Author(s)
    Helfer, Fernanda
    Lemckert, Charles
    Zhang, Hong
    Griffith University Author(s)
    Lemckert, Charles J.
    Zhang, Hong
    Helfer, Fernanda
    Year published
    2012
    Metadata
    Show full item record
    Abstract
    Determining evaporation rates is essential for efficient management of reservoirs and water resources, particularly in water-scarce countries such as Australia. Today, it is estimated that open water reservoirs in Australia lose around 40% of their total water storage capacity per year to evaporation. While this loss is of significant concern, the threat of a changing climate has been directing greater focus to how much water will be lost from Australia's reservoirs in the future. This paper analyses evaporation rates from a large water supply reservoir in South-East Queensland (SEQ), Australia, under current climate and ...
    View more >
    Determining evaporation rates is essential for efficient management of reservoirs and water resources, particularly in water-scarce countries such as Australia. Today, it is estimated that open water reservoirs in Australia lose around 40% of their total water storage capacity per year to evaporation. While this loss is of significant concern, the threat of a changing climate has been directing greater focus to how much water will be lost from Australia's reservoirs in the future. This paper analyses evaporation rates from a large water supply reservoir in South-East Queensland (SEQ), Australia, under current climate and predicted climate change conditions using modelling. Daily meteorological projections from nine global climate models were used in the model DYRESM as the driving forces of the thermodynamics of the reservoir under study. Two future 20-year period simulations were undertaken, one from 2030 to 2050, and the other from 2070 to 2090. The modelled future evaporation rates, as well as water temperatures, were then compared with modelled evaporation rates and temperatures obtained using observed meteorological variables for the period of 1990-2010. The results showed that the evaporation rates from the study reservoir will increase in the future. For the period centred in 2040, the annual evaporation will be approximately 8% higher than the 20-year average annual evaporation estimated for the present climate. A more pronounced increase in evaporation is expected in 2070-2090, with annual evaporation predictions being approximately 15% higher than the baseline evaporation. The main agent behind this increase is higher surface air temperatures in the future. According to the modelling results, the mean annual surface air temperature will grow from the present value of 20.4 àto 21.5 àin 2030-2050, and to 23.2 àin 2070-2090. As a consequence, the mean annual surface water temperatures of the reservoir will increase by 0.9 àand 1.7 àin both time frames, respectively. This will have a significant impact on the evaporation rates, particularly in spring and summer, when the temperature increases will be more significant.
    View less >
    Journal Title
    Journal of Hydrology
    Volume
    475
    DOI
    https://doi.org/10.1016/j.jhydrol.2012.10.008
    Copyright Statement
    © 2012 Elsevier B.V.. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Surfacewater Hydrology
    Water Resources Engineering
    Publication URI
    http://hdl.handle.net/10072/49475
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander