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these features. 5.1.1 Method 1 (RA) This is the most basic method and is a simple 12-month running average. At each hour in the time-series calculate the 1-year average of the baseline mass mixing ratios centred on this hour (y mc ). This is the longterm trend component, subtracting this from the actual

expected throughout the period. This is done using a dynamical seasonal prediction computer model of the global atmosphere-ocean system developed in the Met Office’s climate research division, the Hadley Centre. The seasonal prediction model is based on a Met Office Hadley Centre climate model

and west with isolated showers in the far north. The night of the 6th/7th was cold in some places with a minimum of 0.9 °C at Tulloch Bridge (Inverness-shire), followed by another warm dry sunny day for most. The 8th and 9th were generally cloudier, with isolated patches of light rain, but it remained

previously. This paper is the third in a series of three reports from the Met Office Hadley Centre that address the recent pause in global warming and seek to answer the following questions. What have been the recent trends in other indicators of climate over this period; what are the potential drivers

- this is the T+ n timestep • Forecast validity time - the time the forecast is valid for, calculated from the forecast reference time + forecast period • Severity value (1 = light, 2 = moderate, 3 = severe) • Vertical height as pressure levels • Polygon unique identifier (order in which polygons are generated

forecasters, advisors and specialist scientists on the interpretation and impact of the weather during an emergency. If required, Met Office experts are ready to attend or teleconference into tactical/strategic command and control centres. The Met Office’s Public Weather Service provides a range

the day across the country. We will see some isolated showers just feeding in from the northwest. One or two bubbling up across parts of England and Wales through the afternoon, but these will be fairly light and fairly well scattered. And there should be a bit more in the way of sunshine between those

. Elsewhere, the majority will remain dry, though one or two light showers are possible, particularly over eastern England. The increased breeze may actually help to brighten things up in some areas, breaking up the cloud and allowing for occasional sunny spells. Temperatures and how it will feel

be locally heavy with cumulonimbus cloud and thunderstorm activity. More organised rain or showers are likely to affect the far southwest later in the day. Winds will be light inland during the morning but will strengthen to moderate or fresh levels later, becoming strong along some coastal areas

. Elsewhere, the majority will remain dry, though one or two light showers are possible, particularly over eastern England. The increased breeze may actually help to brighten things up in some areas, breaking up the cloud and allowing for occasional sunny spells. Temperatures and how it will feel