dc.contributor.author |
Malherbe, Johan
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dc.contributor.author |
Engelbrecht, FA
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dc.contributor.author |
Landman, WA
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|
dc.date.accessioned |
2014-06-17T10:27:05Z |
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dc.date.available |
2014-06-17T10:27:05Z |
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dc.date.issued |
2014-03 |
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dc.identifier.citation |
Malherbe, J, Engelbrecht, F.A and Landman, W.A. 2013. Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa. Journal of Geophysical Research: Atmospheres, vol. 119(5), pp 2032-2049 |
en_US |
dc.identifier.issn |
2169-897X |
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dc.identifier.uri |
http://onlinelibrary.wiley.com/doi/10.1002/2013JD021138/pdf
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dc.identifier.uri |
http://hdl.handle.net/10204/7457
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dc.description |
Copyright: 2013 John Wiley & Sons Ltd. This is an ABSTRACT ONLY. The definitive version is published in Journal of Geophysical Research: Atmospheres, vol. 119(5), pp 2032-2049 |
en_US |
dc.description.abstract |
Synoptic weather data and rainfall records are used to support previous suggestions that the decadal-scale cycle in certain climate records may be attributed to the modulation in tidal forcing related to the 18.6 year lunar nodal cycle. The Southern Annular Mode (SAM) is shown to be sensitive to tidal forcing on a daily time scale. It is subsequently shown that the late-summer SAM can be predicted by consideration of tidal potential. The seasonal response in the SAM is also reflected in sea surface temperatures. Observed behavior of the atmosphere suggests that changing tidal potential over the lower versus higher latitudinal regions plays a role. The atmospheric response as reflected in the changing SAM affects the daily rainfall variation in certain subtropical parts of southern Africa where rainfall correlates positively with the SAM. The daily rainfall response subsequently accumulates in a bidecadal rainfall cycle, known over southern Africa as the Dyer-Tyson cycle. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
John Wiley & Sons Ltd |
en_US |
dc.relation.ispartofseries |
Workflow;12887 |
|
dc.subject |
Synoptic weather data |
en_US |
dc.subject |
Geophysical research |
en_US |
dc.subject |
Southern Annular Mode |
en_US |
dc.subject |
SAM |
en_US |
dc.subject |
Dyer-Tyson cycle |
en_US |
dc.subject |
Tidal forcing |
en_US |
dc.subject |
Bidecadal |
en_US |
dc.subject |
Lunar tide |
en_US |
dc.subject |
Rainfall cycle |
en_US |
dc.subject |
Climate variability |
en_US |
dc.title |
Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Malherbe, J., Engelbrecht, F., & Landman, W. (2014). Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa. http://hdl.handle.net/10204/7457 |
en_ZA |
dc.identifier.chicagocitation |
Malherbe, Johan, FA Engelbrecht, and WA Landman "Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa." (2014) http://hdl.handle.net/10204/7457 |
en_ZA |
dc.identifier.vancouvercitation |
Malherbe J, Engelbrecht F, Landman W. Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa. 2014; http://hdl.handle.net/10204/7457. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Malherbe, Johan
AU - Engelbrecht, FA
AU - Landman, WA
AB - Synoptic weather data and rainfall records are used to support previous suggestions that the decadal-scale cycle in certain climate records may be attributed to the modulation in tidal forcing related to the 18.6 year lunar nodal cycle. The Southern Annular Mode (SAM) is shown to be sensitive to tidal forcing on a daily time scale. It is subsequently shown that the late-summer SAM can be predicted by consideration of tidal potential. The seasonal response in the SAM is also reflected in sea surface temperatures. Observed behavior of the atmosphere suggests that changing tidal potential over the lower versus higher latitudinal regions plays a role. The atmospheric response as reflected in the changing SAM affects the daily rainfall variation in certain subtropical parts of southern Africa where rainfall correlates positively with the SAM. The daily rainfall response subsequently accumulates in a bidecadal rainfall cycle, known over southern Africa as the Dyer-Tyson cycle.
DA - 2014-03
DB - ResearchSpace
DP - CSIR
KW - Synoptic weather data
KW - Geophysical research
KW - Southern Annular Mode
KW - SAM
KW - Dyer-Tyson cycle
KW - Tidal forcing
KW - Bidecadal
KW - Lunar tide
KW - Rainfall cycle
KW - Climate variability
LK - https://researchspace.csir.co.za
PY - 2014
SM - 2169-897X
T1 - Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa
TI - Response of the Southern Annular Mode to tidal forcing and the bidecadal rainfall cycle over subtropical southern Africa
UR - http://hdl.handle.net/10204/7457
ER -
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en_ZA |