University of Canterbury Home
    • Admin
    UC Research Repository
    UC Library
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    1. UC Home
    2. Library
    3. UC Research Repository
    4. Faculty of Science | Te Kaupeka Pūtaiao
    5. Science: Conference Contributions
    6. View Item
    1. UC Home
    2.  > 
    3. Library
    4.  > 
    5. UC Research Repository
    6.  > 
    7. Faculty of Science | Te Kaupeka Pūtaiao
    8.  > 
    9. Science: Conference Contributions
    10.  > 
    11. View Item

    Rain-on-snow in the Southern Alps: hydrometeorology and imapcts (2021)

    Thumbnail
    View/Open
    SIRG-Handbook-2021-ALL.pdf (3.969Mb)
    Type of Content
    Conference Contributions - Other
    UC Permalink
    https://hdl.handle.net/10092/102006
    
    Collections
    • Science: Conference Contributions [391]
    Authors
    Porhemmat R
    Zawar-Reza P
    Kerr T
    Zammit C
    Purdie, Heather cc
    show all
    Abstract

    Rain-on-snow (ROS) events are important hydrometeorological phenomenon in alpine catchments. Despite the frequent occurrence of ROS in the Southern Alps, the hydrometeorological characteristics of these events remain poorly understood. Of particular interest is understanding the characteristics of water vapour transport and its role in providing moisture and warm temperatures during the days leading to ROS events. Mid-latitude Southern Alps have been found to be largely influenced by frequent landfalling atmospheric rivers (ARs). The aim of study was to identify the role of ARs in producing winter- and spring -time ROS events by analysing integrated vapour transport (IVT). The climate variables from Mueller Hut automatic weather station located near the Main Divide of the Southern Alps were used to identify rain-on-snow events. In order to characterise the general patterns of moisture transport during major ROS events the 10 topmost ROS events with the highest daily accumulated rain were selected during the periods when snow was on the ground and a decrease in snow depth occurred. Our findings showed that all ten identified events were associated with strong fluxes of tropical water vapour travelling over Tasman Sea within a north-westerly airflow. Using an AR detection method, it was found that out of these 10 ROS events, nine were associated with ARs.

    Citation
    Porhemmat R, Purdie H, Zawar-Reza P, Kerr T, Zammit C (2021). Rain-on-snow in the Southern Alps: hydrometeorology and imapcts. University of Canterbury, Christchurch: The Snow and Ice Research Group Workshop: Understanding Mountain Climate II. 09/02/2021-13/02/2021.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    ANZSRC Fields of Research
    37 - Earth sciences::3701 - Atmospheric sciences::370108 - Meteorology
    37 - Earth sciences::3701 - Atmospheric sciences::370109 - Tropospheric and stratospheric physics
    Rights
    All rights reserved unless otherwise stated
    http://hdl.handle.net/10092/17651

    Related items

    Showing items related by title, author, creator and subject.

    • The influence of atmospheric circulation patterns during large snowfall events in New Zealand's Southern Alps 

      Porhemmat R; Purdie H; Zawar‐Reza P; Zammit C; Kerr T (Wiley, 2020)
      Large snowfall events contribute significantly to total annual snow accumulation across the maritime Southern Alps. However, the knowledge about atmospheric circulation patterns associated with large snowfall events over ...
    • Moisture Transport during Large Snowfall Events in the New Zealand Southern Alps: The Role of Atmospheric Rivers 

      Porhemmat R; Zawar-Reza P; Zammit C; Kerr T; Purdie, Heather (American Meteorological Society, 2021)
      Synoptic-scale moisture transport during large snowfall events in the New Zealand Southern Alps is largely unknown due to a lack of long-term snow observations. In this study, records from three recently developed automatic ...
    • A comparison of Loon balloon observations and stratospheric reanalysis products 

      Friedrich LS; Bodeker GE; Cooper KE; Lewis J; Paterson AJ; McDonald, Adrian (Copernicus GmbH, 2017)
      © Author(s) 2017. Location information from long-duration super-pressure balloons flying in the Southern Hemisphere lower stratosphere during 2014 as part of X Project Loon are used to assess the quality of a number of ...
    Advanced Search

    Browse

    All of the RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThesis DisciplineThis CollectionBy Issue DateAuthorsTitlesSubjectsThesis Discipline

    Statistics

    View Usage Statistics
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer