0 Why, oh why, does it keep raining?

worcester floods 4The frequency of extreme rainfall in the UK may be increasing, according to analysis by the Met Office.

Statistics show that days of particularly heavy rainfall have become more common since 1960.

The analysis is still preliminary, but the apparent trend mirrors increases in extreme rain seen in other parts of the world.

It comes as the Met Office prepares to reveal whether 2012 was the wettest year on record in the UK.

The study into extreme rain is based on statistics from the National Climate Information Centre, the UK's official climate record.
Upwards trend

Extreme rain is defined as the sort of downpour you would expect once in 100 days.

There are big swings in rainfall from year to year, but the overall trend is upwards since 1960. Last year, for instance, extreme rain fell around once every 70 days.

The phenomenon of more frequent downpours has already been noted elsewhere, particularly in China and India.
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There's evidence to say we are getting slightly more rain in total, but more importantly it may be falling in more intense bursts"

Professor Julia Slingo Met Office

Scientists say that as the world has warmed by 0.7C, the atmosphere is able to hold 4% more moisture, which means more potential rain.

The change in the UK trend is slight, but if the trend is confirmed it will clearly increase the risk of flooding.

This year is already the wettest in England's recorded history. And a series of downpours in late November brought one of the wettest weeks in the last 50 years, causing major disruption.

See the rest of the article on the BBC news website

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