2009-1900: Trend in Global Annual Temperature 1900-2009, 1910-2009, 1920-2009, 1930-2009, 1940-2009, 1950-2009, 1960-2009, 1970-2009 (Australian BoM).
Reference: Australian BoM http://www.bom.gov.au/cgi-bin/climate/change/global/trendmaps.cgi
Image Descriptions: see case descriptions. Images are located at Australian BoM http://www.bom.gov.au/cgi-bin/climate/change/global/trendmaps.cgi Image Permission: These works are copyrighted and unlicensed. However, it is believed that the use of these works to illustrate the subject in question, Where no free equivalent is available or could be created that would adequately give the same information, on Interlinked Challenges, hosted on servers in the United States by Michigan State University, qualifies as fair use under United States copyright law.