Description: Since 1970 there has been little change in the overall number of tropical cyclones. The number of recorded Category 1 and 2 cyclones has been decreasing whereas the number of category 4 and 5 cyclones has been increasing.
Published in: 2011 Global Assessment Report on Disaster Risk Reduction - Revealing Risk, Redefining Development
Copyright © United Nations 2011. All Rights Reserved.
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