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Examples of ENSO-Society InteractionsSocietal and Environmental Impact of ENSO in Papua New GuineaMike Bourke Department of Human Geography Research School of Pacific and Asian Studies Australian National University Canberra, Australia ~~~ The ENSO has a significant impact in Papua New Guinea (PNG) and there is a good relationship between the stronger ENSO events and rainfall extremes in PNG. The impact is particularly marked in the highlands (1200-2800 m above sea level) where villagers obtain most of their energy food from a single crop, sweet potato. The most dramatic effect is frosts, which are most severe at above 2200 m altitude. A single frost does not have a large impact on food production, but a series of frosts destroys sweet potato and other crops.
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