Figure : ak_tgraphic_mockup

Observed and Projected Changes in Annual Average Temperature

Figure 26.1

U.S. Geological Survey
Jeremy Littell

This figure appears in chapter 26 of the Impacts, Risks, and Adaptation in the United States: The Fourth National Climate Assessment, Volume II report.

(a) The graph shows Alaska statewide annual average temperatures for 1925–2016. The record shows no clear change from 1925 to 1976 due to high variability, but from 1976–2016 a clear trend of +0.7°F per decade is evident. (b) The map shows 1970–1999 annual average temperature. Alaska has a diverse climate, much warmer in the southeast and southwest than on the North Slope \(c) The map shows projected changes from climate models in annual average temperature for end of the 21st century (compared to the 1970–1999 average) under a lower scenario (RCP4.5). (d) The map is the same as \(c) but for a higher scenario (RCP8.5). Sources: (a) National Oceanic and Atmospheric Administration and U.S. Geological Survey, (b–d) U.S. Geological Survey.

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This figure was created on September 15, 2017.

This figure was submitted on December 03, 2018.

This figure was derived from scenario rcp_4_5
This figure was derived from scenario rcp_8_5

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