1) IPCC, 2013: Observations: Oceanic Climate Change and Sea Level. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, SPM.3, http://www.climatechange2013.org/images/report/WG1AR5_SPM_FINAL.pdf

2) National Snow and Ice Data Centre (NSIDC), Oct 2013, A Better Year for the Cryosphere, http://nsidc.org/arcticseaicenews/2013/10/a-better-year-for-the-cryosphere/

3) IPCC, 2013: Observations: Changes in Snow, Ice and Frozen Ground. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change http://www.climatechange2013.org/images/report/WG1AR5_SPM_FINAL.pdf

4) Global Warming Art. 2007. http://www.globalwarmingart.com/

5) Government of Canada. 2011. Government of Canada Program for International Polar Year: Highlights and Achievements, http://www.api-ipy.gc.ca/pg_IPYAPI_071-eng.html