Fierce storms

Tropical cyclones will become more fierce over the next few decades as a It of global warming. But mes are unlikely to become frequent or spread beyond tropics, according to a report prepared for the World Metrological Organization. The rt predicts that the intensity rclones will increase between nd 20 per cent over the next,. 80 years, due to more energetic npheric convention currents @d by an increase in sea surface wratures. The report was ared by an international group 2 scientists headed by Ann Jerson-Sellers, a climatologist e Royal Melbourne Institute of nolovv, Australia.