Meteorological charts. Station Circle These symbols summarise a surface met. observation. The circle denotes the position. Pressure is in tenths of mb.

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Presentation transcript:

Meteorological charts

Station Circle These symbols summarise a surface met. observation. The circle denotes the position. Pressure is in tenths of mb with the leading 10 or 9 omitted; thus 107 is mb. Temperature is in tenths of a degree, i.e 57 = 5.7 °C Wind is in knots – 1 knot = 0.5 ms -1. The arrow points along the wind direction. This symbol is called a wind fleck.

Symbols CloudsWeather

Surface weather chart, 12 Z 16/10/97

700 mb chart, 16/10/97

300 mb chart, 16/10/97

Satellite images, 1414, 16/10/97 Visible (reflected sunlight) Infra-red (emitted at 12 µm)