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| Titel |
The Southern Annular Mode: a comparison of indices |
| VerfasserIn |
M. Ho, A. S. Kiem, D. C. Verdon-Kidd |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 3 ; Nr. 16, no. 3 (2012-03-26), S.967-982 |
| Datensatznummer |
250013222
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| Publikation (Nr.) |
 copernicus.org/hess-16-967-2012.pdf |
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| Zusammenfassung |
| The Southern Annular Mode (SAM) has been identified as a climate mechanism
with potentially significant impacts on the Australian hydroclimate.
However, despite the identification of relationships between SAM and
Australia's hydroclimate using certain data sets, and focussed on certain
time periods, the association has not been extensively explored and
significant uncertainties remain. One reason for this is the existence of
numerous indices, methods and data sets by which SAM has been approximated.
In this paper, the various SAM definitions and indices are reviewed and the
similarities and discrepancies are discussed, along with the strengths and
weaknesses of each index development approach. Further, the sensitivity of
the relationship between SAM and Australian rainfall to choice of SAM index
is quantified and recommendations are given as to the most appropriate index
to use when assessing the impacts of the SAM on Australia's hydroclimate.
Importantly this study highlights the need to consider the impact that the
choice of SAM index, and data set used to calculate the index, has on the
outcomes of any SAM attribution study. |
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