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to be unusually high over Greenland, and low over the Siberian Arctic, directing warm air from midlatitudes over the Canadian and Central Arctic while the East Siberian Sea often received northerly airstreams from the Central Arctic Ocean where temperatures are colder (Figure 4b). Figure 4. Near

any of the last 10 years (fig. 1.2a, bottom right) is enhanced above the chance level, with probabilities typically around 20 to 45% over much of the region Figure 1.2b: Top: probability forecasts for a wetter season than last year (left); a wetter season than any in the last 10 years (centre

, tropical cyclones are essential features of the Earth's atmosphere, as they transfer heat and energy between the equator and the cooler regions nearer the poles. What is a tropical cyclone? A tropical cyclone is the generic term for a low pressure system over tropical or sub-tropical waters

for the PWSCG over the next year including a Spending Review and the General Election. For SR, a reasonable working assumption would be for it to occur in late Autumn and that the Department is starting to ramp up its preparatory work. Resourcing will be tight both funding and people. From a PWSCG

°C, which is equal to the 1981-2010 long-term average. Both mean maximum and minimum temperatures were close to the normal over much of the country, but they were 0.5 °C or more below normal over much of south-east and central southern England, while the mean minimum temperature was over 1.0 °C above

in concentrations, with the decline happening soon after the emission reductions. For instance, a large reduction in the emissions of the short-lived greenhouse gas methane will produce a significant decline in methane concentration over a decade, with further concentration reductions over subsequent years

on the general weather conditions, such as precipitation and temperature, over an upcoming season. On the forecast timeline, seasonal forecasts sit after short-term weather forecasts and monthly to sub-seasonal forecasts and before annual, decadal and long-term climate projections. The seasonal timeframe

We have a period of windy, showery and colder weather for much of the UK over the next few days, with showers falling as snow for many especially in northern England, Scotland and Northern Ireland.

However, between the showers this week many of will see some dry and sunny, albeit cold periods and many places will see little or no snow. There are a number of National Severe Weather Warnings in place over the coming days  for snow, ice, and wind for various parts of the UK. A Yellow warning

is a Met Office Chief Meteorologist. He said: “An area of high pressure over southern England will build across a larger part of the UK through midweek. Ahead of this, wet and windy weather will affect the far northwest later today and into Tuesday morning. It will remain very warm across parts

and credibility of signals within the forecast is produced alongside the headline storm number prediction each season. Download the 2007 report. Background A tropical cyclone is the generic term for a low-pressure system over tropical or sub-tropical waters, with organised convection (i.e. thunderstorm