An assessment of relationships between the Australian subtropical ridge, rainfall variability, and high-latitude circulation patterns
Article
Article Title | An assessment of relationships between the Australian subtropical ridge, rainfall variability, and high-latitude circulation patterns |
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ERA Journal ID | 1969 |
Article Category | Article |
Authors | Williams, Allyson A. J. (Author) and Stone, Roger C. (Author) |
Journal Title | International Journal of Climatology |
Journal Citation | 29 (5), pp. 691-709 |
Number of Pages | 19 |
Year | 2009 |
Publisher | John Wiley & Sons |
Place of Publication | Bognor Regis, West Sussex, United Kingdom |
ISSN | 0899-8418 |
1097-0088 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/joc.1732 |
Web Address (URL) | http://www3.interscience.wiley.com/cgi-bin/fulltext/119879251/PDFSTART |
Abstract | The monthly anomaly of the latitude of the subtropical ridge over eastern Australia (L) is a major regulator of synoptic-scale influences on Australia’s climate. Three datasets have been used to calculate L: observed Australia coastal mean sea level pressure (MSLP), Hadley and NCEP Reanalysis datasets. The choice of datasets used in this study appears to strongly influence results. Changes in the Southern Hemisphere Hadley cell and meridional circulation changes are associated with changes in L and it is shown that (1) L has statistically and physically significant relationships with seasonal rainfall in Australia; (2) the Antarctic Oscillation Index (AOI) has statistically significant relationships with Australian seasonal rainfall; and (3) L and Southern Annular Mode (SAM) are significantly related. Longer-term latitudinal shifts in L are also discussed. |
Keywords | subtropical ridge; SAM; solar; Australia; rainfall |
ANZSRC Field of Research 2020 | 370108. Meteorology |
490302. Numerical analysis | |
370202. Climatology | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Queensland Environmental Protection Agency, Australia |
Australian Centre for Sustainable Catchments |
https://research.usq.edu.au/item/9yxx1/an-assessment-of-relationships-between-the-australian-subtropical-ridge-rainfall-variability-and-high-latitude-circulation-patterns
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