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• The North Atlantic Oscillation

  The term 'North Atlantic Oscillation' is used by meteorologists to refer to variations in the large-scale surface pressure gradient in the North Atlantic region.

  In the average state of the atmosphere, the North Atlantic surface pressure is relatively high in the subtropics at latitudes 20°N to 40°N ('the Azores High'), and lower further North at latitudes 50°N to 70°N (the 'Icelandic Low'). The North-South pressure difference determines the strength

• Climate monitoring of the land and atmosphere

  Global observations of surface and upper air temperature and humidity, surface pressure and precipitation are used to provide advice on global climate variability and change.

  stress. Key aims Monitor the climate near the land surface and in the upper air. Provide advice to Government, the media and others. Assist others in using and interpreting the information. Current activities Monitoring and developing analyses of: Surface air temperature and land surface temperature. Precipitation. Near-surface humidity. Upper tropospheric humidity. Near surface wind. Heat-stress indicators.

• wiser0170_highway_obs_data_intercomparison.pdf

  Presentation .................................................................................................................. 9 i) Precipitation Data ..................................................................................................... 10 ii) Surface Pressure

• wiser0195_highway_data_intercomparison.pdf

  Presentation .................................................................................................................. 9 i) Precipitation Data ..................................................................................................... 10 ii) Surface Pressure

• Microsoft PowerPoint - Poster-TC-Kirrily-Hongyan-Debbie

  weaker than parameterised convective rainfall, and is not sustained, preventing the storm from rapidly intensifying and maturing. 6. Relative humidity: azimuthal average GA8 GA8-CoM Fig. 2 The intensity evolution with time (hours) in terms of minimum surface pressure (left); and the track in terms

• Most Tornadoes in one Day 23 November 1981

  reaching F2 hundreds of properties were damaged. The single day outbreak recorded more tornadoes than normally experienced in an entire year in the UK. Surface pressure chart for 00 GMT on 23 November 1981 giving surface pressure (full lines) and 1000-500mb thickness (dashed lines). This shows the low

• MAVIS updates

  Analysis Chart F215 low level chart TAFs and METARs FL020 wind charts Route Winds & Temperature Search and Rescue Briefing Packs – Order is as follows: Surface pressure analysis chart Surface pressure forecast chart British Isles analysis chart F215 low level chart TAFs and METARs FL020 wind charts Route

• Sea surface temperatures breaking records

  Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes of climate change

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  Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes of climate change

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  Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes of climate change