(Article of periodic en Anglais - 2007)

Document title

Global climatic anomalies of the past : on the tracks of ancient El Ninos

Authors(s) and Affiliation(s)



Among the most influential climatic fluctuations of the present, El Nino/Southern Oscillation (ENSO) occupies a central place, and that for very justifiable reasons. Storms in the world's oceans, copious rains in some tropical regions, decimating droughts in others, high waters in mid-latitudinal rivers, excessive heat in certain zones, ecological crises in fragile ecosystems, and misery for the populations hit by these catastrophic events have captured the headlines of media and prompted a great research effort in the geophysical sciences. However, confronted with the shortness of instrumental observations (meteorological records rarely go back more than 150 years, and continuous sea temperature measurements no more than 100 years), the researcher must resort to historical sources and indirect evidence (proxy indicators) to prolong the available time series. Only in this way can estimates about the frequency, simultaneity, and spatial extent of past climatic anomalies be tested. - (IfL)


Article of periodic

published at : Geographische Rundschau. International edition / ISSN 1860-7098


Millesime : 2007, vol. 3, no2 [pp. 44-49]

Bibliographic references : 27 ref.

Collation : Illustration ;




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