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GCSE Geography · key term
A map summarising atmospheric conditions across an area at a particular time.
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Component 1, Component 2, Component 3
Revise: Interpreting Map Types and GIS Spatial PatternsA synoptic chart summarises weather conditions across an area at a particular time. Isobars join places with equal atmospheric pressure. Closely spaced isobars indicate stronger winds; widely spaced isobars suggest lighter winds.
Specification 3.1 · Component 1, Component 2, Component 3
A weather map showing atmospheric conditions over an area at a particular time, including pressure systems and fronts.
On synoptic charts, distinguish thin isobars from the thicker lines carrying front symbols. Check the chart’s date and time.
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A synoptic chart shows weather conditions across an area at a particular time. Its isobars join places with equal atmospheric pressure, usually measured in hectopascals (hPa). Some charts use millibars (mb), which have the same numerical value.
