Drought

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A period of soil moisture that is inadequate for the needs of crops, animals and human beings
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Whilst an overabundance of water has caused floods and made the headlines across the country in recent years, memories of droughts tend to fade.
These droughts at the end of the 21st century are going to be unlike anything in our modern experience," said study coauthor Benjamin Cook, a climate scientist at NASAs Goddard Institute for Space Studies in New York City.
These mega-droughts during the 1100s and 1200s persisted for 20, 30, 40, 50 years at a time, and they were droughts that no-one in the history of the United States has ever experienced," said Ben Cook from Nasa's Goddard Institute for Space Studies.
In Table 2, the numeric interval of various classes of this index is shown, that in order to droughts being more visible, number of classes has increased.
Recently developed tree-ring evidence has allowed the levels of precipitation to be reconstructed for north central Mexico, adding to the growing body of epidemiologic evidence and indicating that the 1545 and 1576 epidemics of cocoliztli (Nahuatl for "pest") were indigenous hemorrhagic fevers transmitted by rodent hosts and aggravated by extreme drought conditions.
A new report by Harvard University's Center for Health and Global Environment claims that continual global climate change could lead to more droughts and significantly reduced crop yields in some U.
When crops fail due to drought, famine and disease follow inevitably in its wake
Its greatest effects, however, were felt in the world's forests, where El Nino's droughts had more of all impact than its rains.
95) The only problem with this logic is that it fails to explain why other droughts (for example the much worse one of 1877-78) did not bring similar anti-foreign violence.
Past droughts are described including those that had severe impacts on human societies.
As South Africa braces itself to weather increasing drought, the WRC calls on all experts in this domain to pool our expertise and collective wisdom to share and engage on issues related to droughts, as well as to identify the respective roles we can play in assisting the nation to use evidence-based science to inform short- and medium-term action plans.