Global weather phenomenon La Niña is being blamed for the Arctic blast which has gripped Britain.
Several inches of snow have already fallen in Scotland and temperatures have plunged as low as -10C to coincide with the reported development of the La Niña system in the Central and Eastern tropical Pacific Ocean.
Some experts believe La Niña increases the risk of North Atlantic Blocking, which prevents a mild, westerly weather flow heading towards the UK and Europe, allowing bitter Polar air to dominate instead.
It is the opposite to El Niño, which leads to the irregular warming of the surface waters of the tropical eastern Pacific Ocean and normally lures wetter conditions to the UK with higher-than-average seasonal temperatures.
The system also impacts the global climate and disrupts normal weather patterns, which as a result can lead to intense storms in some places and droughts in other regions.
The phenomenon encourages the development of potent weather systems in the Atlantic Ocean and has been blamed for this year’s record number of disruptive tropical events.
This year’s La Niña could affect the UK’s weather for several months, but it is unlikely to be as strong as the occurrence in December 2010 when a Big Freeze gripped the country and snow lay on the ground for weeks.
via The Global Warming Policy Forum (GWPF)
November 29, 2017 at 03:39AM