The influence of the Madden Julian Oscillation on Queensland's rainfall

Donald, Alexis and Ribbe, Joachim and Stone, Roger and Meinke, Holger and Harris, Graham and Power, Brendan and Wheeler, Matthew (2003) The influence of the Madden Julian Oscillation on Queensland's rainfall. In: 15th Australian New Zealand Climate Forum, 19-21 Mar 2003, Palmerston, New Zealand.

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The Madden Julian Oscillation (MJO) is a tropical atmospheric anomaly, which develops in the Indian Ocean and propagates eastward. With a timescale ranging from about 30 – 60 days, the MJO has a frequency of 6-12 events per year. In its active phase, the MJO is associated with increased convective activity. Anecdotal evidence suggests that the MJO is closely correlated with rainfall events in areas of Queensland. The value of using MJO signals for climate forecasting in Queensland was assessed.

The project investigated the spatial extent and sought a better definition of, the influence of the MJO on rainfall in Queensland. Rainfall data from 18 Queensland centres was analysed for underlying spatial and temporal patterns. The Real-Time Multivariate MJO index developed by the Australian Bureau of Meteorology Research Centre was used in the statistical analysis. Correlations between rainfall events in Queensland and the location of the active phase of the MJO were identified.

In collaboration with the Queensland State Government Departments of Primary Industries and Natural Resources, the project, which is partially funded by the Australian Cotton Research and Development Council, aims to improve skill in climate forecasting with longer lead times. One application of the results will be in an economic assessment of four farm simulation models, to assist with the improvement of agricultural information systems.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: No
Item Status: Live Archive
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 13 Apr 2008 12:33
Last Modified: 03 Nov 2013 23:57
Uncontrolled Keywords: Madden Julian Oscillation; climate variability; climate; Australia; forecasting; rainfall; intra-seasonal oscillation
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040605 Palaeoclimatology
04 Earth Sciences > 0401 Atmospheric Sciences > 040107 Meteorology
04 Earth Sciences > 0401 Atmospheric Sciences > 040105 Climatology (excl.Climate Change Processes)
Socio-Economic Objective: D Environment > 96 Environment > 9602 Atmosphere and Weather > 960203 Weather

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