Low pressure system over the Arctic Ocean

Low pressure system over the Arctic Ocean

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Caption: Low pressure weather system over the Arctic Ocean. Low pressure systems (cyclones) are characterised by a central region of rising air (just left of centre) which draws air into it from the surrounding regions. The rotation of the Earth causes such systems to develop a spiral shape. Cyclones in the northern hemisphere spiral anticlockwise, those in the southern hemisphere spiral clockwise. Photograph taken by the MODIS instrument on the Aqua satellite at 16:55 GMT on 30th August 2005.

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Keywords: 2005, 21st century, 30/08/2005, afternoon, aqua, arctic, arctic ocean, climate, cloud, cloud types, clouds, cyclonic, depression, earth observation, from space, low pressure, meteorological, meteorology, modis, satellite image, spiral, spiralling, summer, weather, weather system

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