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Climate change puts pressure on London defences

Written by: Staff
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London is mustering its flood defences more often as global warming raises sea levels, the UK government's Chief Scientific Adviser Sir David King told a Reuters conference on climate change and investment.

''The biggest indicator of change that is already happening is usage of the Thames Barrier,'' King told the conference late yesterday.

''The Thames Barrier was designed to be used once every two or three years and in that period after it was built in 1980, it was indeed used once every two or three years. We're now using it six times a year.'' The direct cost of a breach in the flood defences would exceed 30 billion pounds (52.70 billion dollars) directly, King added, not including the ''indirect'' damage to people's lives.

Scientists predict that heat-trapping carbon dioxide (CO2), produced by burning fossil fuels, can raise the temperature of the Earth, and so melt ice caps and cause flooding.

The most recent time that CO2 levels were certainly higher than now was 55 million years ago, when CO2 was more than double current levels and the sea about 100 metres higher, King said.

King saw climate change posing the biggest threat in Britain from changes to rainfall patterns and storm damage to coastlines.

REUTERS

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