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climate change

Global Climate Change

<<Ice and snow

Drought

Impacts on human and eco-system>>

Since the 1950s, some regions of the world have experienced trends toward more intense and longer droughts, in particular in southern Europe and West Africa. However, droughts have become less frequent, less intense, or shorter in some other regions, for example, central North America and northwestern Australia. There is evidence showing human contribution to some changes in the drought patterns observed in the second half of the 20th century.

In early August 2012, more than 50% of the counties in the US were designated as disaster areas, mostly due to drought. The World Bank issued a food price watch message in late August when abrupt food price increases were triggered by droughts in the US and Eastern Europe.

Vegetation anomaly map

Vegetation anomaly map showing plant health in the central United States between June 25 and July 10, 2012, against the average conditions between 2002 and 2012. Brown areas shows where plant growth was less vigorous than normal; green colours indicates abnormally lush vegetation. (Source: US NASA)