Cloud Cover

(lat. 60N-70N, long. 60W-20W)

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Monthly values

Fig 1 - Monthly values

1 - Year label corresponds to January of that year


12-month running averages

Fig 2 - Running 12-month averages.

1 - Data is average of current month and 11 previous months.
2 - Year label corresponds to December of that year (hence the annual average cloud cover).


Total cloud

Fig 3 - Monthly and running 12-month averages.

1 - Total is not the sum of low, mid and upper level cloud. Measurement is different and cloud may be multi-level.

May-October cloud

Fig 4 - Average January-April cloud cover

1 - Cloud cover averages for May to October (inclusive), shown mainly to consider the possible influence on any melting of glaciers and the melting of nearby Arctic sea ice.