Figure : caq-separating-human-and-natural-influences-on-climate

Separating Human and Natural Influences on Climate

Figure 34.15


This figure appears in chapter 34 of the Climate Change Impacts in the United States: The Third National Climate Assessment report.

http://nca2014.globalchange.gov/report/appendices/faqs/graphics/separating-human-and-natural-influences-climate

The green band shows how global average temperature would have changed due to natural forces only, as simulated by climate models. The blue band shows model simulations of the effects of human and natural factors combined. The black line shows observed global average temperatures. As indicated by the green band, without human influences, temperature over the past century would actually have cooled slightly over recent decades. The match up of the blue band and the black line illustrate that only the inclusion of human factors can explain the recent warming. (Figure source: adapted from Huber and Knutti, 201212).

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Other figures containing images in this figure : 1.2: Separating Human and Natural Influences on Climate, 2.3: Separating Human and Natural Influences on Climate

This figure was created on February 21, 2014.

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