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caption: 'Three different global surface temperature records all show increasing trends over the last century. The lines show annual differences in temperature relative to the 1901-1960 average. Differences among data sets, due to choices in data selection, analysis, and averaging techniques, do not affect the conclusion that global surface temperatures are increasing. (Figure source: NOAA NCDC / CICS-NC).'
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  title: 'Appendix 3: Climate Science Supplement'
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chapter_identifier: appendix-climate-science-supplement
cited_by: []
contributors:
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create_dt: 2013-10-22T09:54:37
description: 'Three different global surface temperature records all show increasing trends over the last century. The lines show annual differences in temperature relative to the 1901-1960 average. Differences among data sets, due to choices in data selection, analysis, and averaging techniques, do not affect the conclusion that global surface temperatures are increasing. (Figure source: NOAA NCDC / CICS-NC).'
display_name: '33.8: Observed Change in Global Average Temperature'
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images:
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    title: Observed Change in Global Average Temperature
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ordinal: 8
parents: []
references: []
report:
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title: Observed Change in Global Average Temperature
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