Soldato
- Joined
- 26 Sep 2013
- Posts
- 10,761
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- West End, Southampton
It was only 12C yesterday, not overweight are you Tony?It was chilly, chilly last night too
no, maybe a little, around 14 stone 6'1"
It was only 12C yesterday, not overweight are you Tony?It was chilly, chilly last night too
AS BRITAIN reels from the onslaught of the first winterstorms and floods, the Met Office has warned we could face one of the wettest winters in more than 30 years.
Its research suggests that conditions are right for the north Atlantic to deliver a succession of powerful weather systems similar to those that brought last year’s disastrous storms and floods.
Its three-month outlook, covering the period from today to January, warns that sea temperatures, wind speeds and pressure gradients on the western side of the north Atlantic could produce one of the wettest winters since 1981.
“The rainfall over the last few weeks has already been well above average,” said Adam Scaife, professor of applied mathematics at the Met Office, who specialises in modelling longer-term weather and climate patterns.
“These storms are generated by the jet stream which also carries them eastwards towards us. The jet stream has recently got stronger and moved north, which could carry weather systems from the Atlantic right over the UK.”
Last Friday saw Devon hit by winds of 93mph, Wales struck by 75mph gales and Hampshire suffering widespread flooding.
While being careful not to make any definite predictions, the Met Office suggests more of the same: “There is a consistent signal from computer models for a positive phase of the north Atlantic oscillation to dominate . . . precipitation is more likely to be above average.”
What is certain, however, is that two other key factors in the west Atlantic are just right for Britain to get a rough ride.
One is the increased temperature gradient between the warm waters of the Gulf Stream and those of the Arctic. The second is the sharp rise in wind speed, with altitude, in the atmosphere above those seas.
The potential for these factors to combine, generating UK-bound storms is so great that Scaife and his colleagues are promoting a new term, baroclinicity, to describe it. The word could even be incorporated into TV forecasts.
Scaife said: “It’s a word we might need to get used to — it means we are likely to get more wet and windy weather.”