Figure : globaltemp_cssr_aug30_2016

Global Land and Ocean Temperature Anamolies

Figure 1.2

Cooperative Institute for Climate and Satellites - NC
Kenneth E. Kunkel

This figure appears in chapter 1 of the Climate Science Special Report: The Fourth National Climate Assessment: Volume I report.

Top: Global annual average temperatures (as measured over both land and oceans) for 1880–2016 relative to the reference period of 1901–1960; red bars indicate temperatures above the average over 1901–1960, and blue bars indicate temperatures below the average. Global annual average temperature has increased by more than 1.2°F (0.7°C) for the period 1986–2016 relative to 1901–1960. While there is a clear long-term global warming trend, some years do not show a temperature increase relative to the previous year, and some years show greater changes than others. These year-to-year fluctuations in temperature are mainly due to natural sources of variability, such as the effects of El Niños, La Niñas, and volcanic eruptions. Based on the NCEI (NOAAGlobalTemp) dataset (updated from Vose et al.56ff58db-e758-4042-9111-22a13e4758a2 ) Bottom: Global average temperature averaged over decadal periods (1886–1895, 1896–1905, …, 1996–2005, except for the 11 years in the last period, 2006–2016). Horizontal label indicates midpoint year of decadal period. Every decade since 1966–1975 has been warmer than the previous decade. (Figure source: [top] adapted from NCEI 2016,3518638e-7d18-4afe-ae37-dc97db0110ce [bottom] NOAA NCEI and CICS-NC).

Free to use with credit to the original figure source.

This figure was created on August 30, 2016.

This figure was submitted on October 06, 2017.

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