Quasi-Biennial Oscillation influence on Australian summer rainfall

Article


Jiang, Xiaoxuan, Holbrook, Neil J., Marshall, Andrew G. and Love, Peter T.. 2024. "Quasi-Biennial Oscillation influence on Australian summer rainfall." Npj Climate and Atmospheric Science. 7 (1). https://doi.org/10.1038/s41612-023-00552-7
Article Title

Quasi-Biennial Oscillation influence on Australian summer rainfall

ERA Journal ID213730
Article CategoryArticle
AuthorsJiang, Xiaoxuan, Holbrook, Neil J., Marshall, Andrew G. and Love, Peter T.
Journal TitleNpj Climate and Atmospheric Science
Journal Citation7 (1)
Article Number19
Number of Pages14
Year2024
PublisherNature Publishing Group
Place of PublicationUnited Kingdom
ISSN2397-3722
Digital Object Identifier (DOI)https://doi.org/10.1038/s41612-023-00552-7
Web Address (URL)https://www.nature.com/articles/s41612-023-00552-7
AbstractThe variability and distribution of Australia’s summer rainfall are influenced by modes of climate variability on multi-week to multi-year time scales. Here, we investigate the role of the stratospheric quasi-biennial oscillation (QBO) and demonstrate that the QBO influences rainfall variations and extremes’ responses across large regions of Australia. We find the QBO modulates convective heating to the east of the Maritime Continent and over the central South Atlantic Ocean in the austral summer. The baroclinic response and barotropic structure of the extra-tropical Rossby wave train induces anomalous circulation that affects the distribution and amount of rainfall over Australia. Our analysis and findings of QBO teleconnections with the dynamics that drive Australia’s rainfall variability and extremes represents a pathway to improve our understanding of rainfall potential predictability and scope to extend Australia’s rainfall prediction lead times. © 2024, The Author(s).
KeywordsAustralian summer rainfall
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020370105. Atmospheric dynamics
Byline AffiliationsUniversity of Tasmania
Centre for Applied Climate Sciences
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