Simulations of Australian extreme rainfall and circulation during the January 2011 La Nina

J Whelan, J S Frederiksen

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch


We examine the synoptics and the role of different classes of dynamical disturbances, from both observations and ensemble simulations, during of one of Australia's most severe flooding events in January 2011. We analyse ensemble simulations using the CSIRO M3L general circulation spectral model. Using wavenumber extraction techniques and dynamical mode analyses, we note the collision and convective coupling of Kelvin waves and the Madden--Julian oscillation in the Australian monsoonal region. Model simulations and the dynamical analyses are consistent with the synoptic situation, and provide a more complete explanation for the extensive precipitation impacts over Australia during January 2011.
Original languageEnglish
Title of host publicationProceedings of the 17th Biennial Computational Techniques and Applications Conference
EditorsMarkus Hegland, Jason Sharples
Place of PublicationCanberra ACT Australia
PublisherCambridge University Press
Number of pages15
Publication statusPublished - 2015
Externally publishedYes
EventComputational Techniques and Applications Conference 2014 - Australian National University, Canberra, Australia
Duration: 1 Dec 20143 Dec 2014
Conference number: 17th

Publication series

NameANZIAM Journal
PublisherCambridge University Press
ISSN (Print)1446-1811
ISSN (Electronic)1446-8735


ConferenceComputational Techniques and Applications Conference 2014
Abbreviated titleCTAC 2014
Internet address


  • climate modeling
  • normal modes
  • instabilities
  • ENSO

Cite this