Variability and long-term change in Australian monsoon rainfall: A review
Article
Article Title | Variability and long-term change in Australian monsoon rainfall: A review |
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ERA Journal ID | 122843 |
Article Category | Article |
Authors | Heidemann, Hanna, Cowan, Tim, Henley, Benjamin J., Ribbe, Joachim, Freund, Mandy and Power, Scott |
Journal Title | WIREs Climate Change |
Journal Citation | 14 (3) |
Article Number | e823 |
Number of Pages | 28 |
Year | 2023 |
Publisher | John Wiley & Sons |
Place of Publication | United Kingdom |
ISSN | 1757-7780 |
1757-7799 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/wcc.823 |
Web Address (URL) | https://wires.onlinelibrary.wiley.com/doi/full/10.1002/wcc.823 |
Abstract | The Australian monsoon delivers seasonal rain across a vast area of the continent stretching from the far northern tropics to the semi-arid regions. This article provides a review of advances in Australian monsoon rainfall (AUMR) research and a supporting analysis of AUMR variability, observed trends, and future projections. AUMR displays a high degree of interannual variability with a standard deviation of approximately 34% of the mean. AUMR variability is mostly driven by the El Niño-Southern Oscillation (ENSO), although sea surface temperature anomalies in the tropical Indian Ocean and north of Australia also play a role. Decadal AUMR variability is strongly linked to the Interdecadal Pacific Oscillation (IPO), partially through the IPO's impact on the strength and position of the Pacific Walker Circulation and the South Pacific Convergence Zone. AUMR exhibits a century-long positive trend, which is large (approximately 20 mm per decade) and statistically significant over northwest Australia. The cause of the observed trend is still debated. Future changes in AUMR over the next century remain uncertain due to low climate model agreement on the sign of change. Recommendations to improve the understanding of AUMR and confidence in AUMR projections are provided. This includes improving the representation of atmospheric convective processes in models, further explaining the mechanisms responsible for AUMR variability and change. Clarifying the mechanisms of AUMR variability and change would aid with creating more sustainable future agricultural systems by increasing the reliability of predictions and projections. This article is categorized under: Paleoclimates and Current Trends > Modern Climate Change. |
Keywords | Australian monsoon; climate change; climate variability; ocean-atmosphere interactions; rainfall; rainfall driver; rainfall projection |
Related Output | |
Is part of | Interannual and decadal variability of Australian monsoon rainfall and variability in the Pacific Ocean |
ANZSRC Field of Research 2020 | 370202. Climatology |
370201. Climate change processes | |
Public Notes | This article is part of a UniSQ Thesis by publication. See Related Output. |
Byline Affiliations | Centre for Applied Climate Sciences |
Bureau of Meterology, Australia | |
University of Wollongong | |
School of Mathematics, Physics and Computing | |
University of Melbourne | |
Monash University | |
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia |
https://research.usq.edu.au/item/ww9zy/variability-and-long-term-change-in-australian-monsoon-rainfall-a-review
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WIREs Climate Change - 2023 - Heidemann.pdf | ||
License: CC BY-NC 4.0 | ||
File access level: Anyone |
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