Late Victorian Holocausts by Mike Davis

Author:Mike Davis
Language: eng
Format: epub
Tags: Late Victorian Holocausts: El Niño Famines and the Making of the Third World
ISBN: 9781781680612
Publisher: Verso Books
Published: 2012-02-04T16:00:00+00:00

Figure 8.1 Teleconnection as Selective Interaction

In these entangled modes, ENSO impulses interact on longer timescales with regional climate periodicities, which, depending on phase, can either amplify or decrease the signal from the Pacific. Even with the same tropical forcing, extratropical responses can vary dramatically. Thus the strength of the ENSO teleconnection to the Indian monsoon depends upon interdecadal trends in Eurasian snow-cover, while the teleconnection to western North America is modulated by poorly understood 20- to 30-year oscillations in the North Pacific.9 Some climate researchers, moreover, believe that “forecasts based on established [ENSO] teleconnections, even those considered highly statistically significant, could fail or even reverse sign in the future due to decadal time scale climate variability.” The recent “decoupling” of ENSO and the Indian monsoon, as we shall see, is a dramatic case in point.10

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