Figure 11. Trends in number of reported disasters (see text).
Number of disasters per year
Trends in number of reported disasters
Much of the increase in the number of hazardous events reported is probably due to significant improvements in information access and also to population growth, but the number of floods and cyclones reported is still rising compared to earthquakes. Is global warming affecting the frequency of natural hazards?
All disasters include: drought, earthquake, extreme temperatures, famine, flood, insect infestation, slides, volcanic eruption, wave and surge, wild fires, wind storm.
Earthquakes versus climatic disasters
1920 1940 1960
1980 1985 1990 1995
Source: CRED Annual Disaster Statistical Review 2006, 2007.
Figure 12. Projected population flooded in coastal areas by 2080 (see text).
Population flooded in coastal areas in 2080 Million people per year (logarithmic scale)
no additional efforts undetaken more protection efforts than today
strong efforts to protect coastal populations against floods
Source: H. Ahlenius, GEO Ice and Snow, 2007, based on Nicholls, R.J. and Lowe, J.A., 2006. Note: The upper margin of each band shows the amount of people affected in the A2 scenario according to which global population will reach 14 thousand million by 2080 with the lowest GDP of all IPCC scenarios. Therefore little capacity exists to adapt, and more people will be affected by floods. The lower end of each curve shows the impact for the A1/B1 scenario assuming the highest per captia income and world population at 8 thousand million, allowing for higher investments in the protection of the population.
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