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Weather data
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Current Data
Observations are the lifeblood of all forecasting. Use the links
below to see maps of UK and world observations by area, complete
lists of the latest observations, or rolling archives of data.
Past Data
Information is a valuable resource and the amounts of data provided
free of charge are sufficient to complete the majority of projects.
Exact details of the available data and the charges are listed
in the relevant sections.
Go to the data
catalogue page
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Meteorologists measure the atmospheric pressure because it is helpful
when analysing and predicting winds and weather. The pressure is
measured using a barometer, in units of millibars (mb), hectopascals
(hPa), or inches of mercury. A correction is then applied to calculate
the equivalent sea-level pressure.
On a weather chart, lines joining places with equal
sea-level pressures are called isobars. Charts showing isobars
are useful because they identify features such as anticyclones
(areas of high pressure), depressions (areas of low pressure),
troughs and ridges which are associated with particular kinds
of weather.
Go to the charts
page
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When studying the satellite pictures, remember that with the visible
images you are viewing reflected sunlight (reflected from the earth
or the clouds). In general, the brighter the cloud appears, the
thicker it is.
Go to the satellite
page
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In this section you can find synoptic charts, satellite images,
observational data and activity ideas for using the data.
Go to the activities
page
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