Using the graphics and referring to them is encouraged, and please use them in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include this link:
http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-exte
nt-in-march-maximum-and-september-minimum-in-the-time-period
-of-1979-20

Please give the cartographer/designer/author credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal) and give full recognition to the data sources used in the graphic.

Feel free to feature links to this page, or other pages on this site, but please refrain from linking to the actual graphics files directly, if possible (i.e. inline linking).

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Here are some suggestions for the the proper citation, in a number of styles that can just be copied and pasted into any documents. This is based on the template provided by Wikipedia. For reference to any printed material, please see the details of the collection or collections this graphic is published in, which may be published in paper format.

• APA style

  Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008. (2008). In UNEP/GRID-Arendal Maps and Graphics Library. Retrieved 04:42, February 8, 2012 from http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20.

• MLA style

  "Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008." UNEP/GRID-Arendal Maps and Graphics Library. 2008. UNEP/GRID-Arendal. 8 Feb 2012 <http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20>.

• MHRA style

  UNEP/GRID-Arendal, 'Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008', UNEP/GRID-Arendal Maps and Graphics Library, 2008, <http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20> [Accessed 8 February 2012]

• Chicago style

  UNEP/GRID-Arendal, Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008, UNEP/GRID-Arendal Maps and Graphics Library, http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20 (Accessed 8 February 2012)

• CBE/CSE style

  UNEP/GRID-Arendal. Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008 [Internet]. UNEP/GRID-Arendal Maps and Graphics Library; 2008 [cited 2012 Feb 8]. Available from: http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20.

• Bluebook style

  Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008, http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20 (Last visited February 8, 2012).

• Bluebook: Harvard JOLT style

  See UNEP/GRID Arendal Maps and Graphics Library, Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008, http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20 (Optional description here) (as of Feb. 8, 2012, 03:42 UTC).

• AMA style

  UNEP/GRID-Arendal. Trends in Arctic sea ice extent in March (maximum) and September (minimum) in the time period of 1979–2008. UNEP/GRID-Arendal Maps and Graphics Library. 2008. Available at: http://maps.grida.no/go/graphic/trends-in-arctic-sea-ice-extent-in-march-maximum-and-september-minimum-in-the-time-period-of-1979-20. Accessed February 08, 2012.