 |
| Titel |
Synchronicity of historical dry spells in the Southern Hemisphere |
| VerfasserIn |
D. C. Verdon-Kidd, A. S. Kiem |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 18, no. 6 ; Nr. 18, no. 6 (2014-06-18), S.2257-2264 |
| Datensatznummer |
250120388
|
| Publikation (Nr.) |
 copernicus.org/hess-18-2257-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| A shift in climate occurred during the mid-1970s that affected the
hydroclimate of the Southern Hemisphere resulting in drying trends across
continental regions including Australia, New Zealand and southern and western
Africa. There is also anecdotal evidence of other periods of climatic
synchronicity in the Southern Hemisphere (e.g., the 1920s and 1940s),
indicating that the mid-1970s event may not be anomalous. This paper
identifies periods within the last ~120 years using statistical
analysis where dry spells (in terms of annual to multi-decadal rainfall
deficiencies) have coincided across the continental Southern Hemisphere in
order to characterize temporal consistency. It is shown that synchronicity of
dry spells is (a) most likely common over the last 120 years and (b)
associated with changes in the large-scale climate modes of the Pacific,
Indian and Southern Oceans. Importantly, the findings presented in this paper
have marked implications for drought management and drought forecasting
studies in the Southern Hemisphere. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|