File:Attribution of global warming – simulation of 20th century global mean temperatures (with and without human influences) compared to observations (NASA).png
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Summary
| Description |
English: This graph shows two simulations of 20th century global mean temperatures compared with observed temperatures (dotted line). The red line (higher up on the right-hand side graph) shows simulated temperatures including human influences (e.g., greenhouse gases and aerosols), the blue line (lower down on the right-hand side graph) shows simulated temperatures excluding human influences. The graph is adapted from Hegerl et al. (2007) (referred to by the cited source). From the cited Lindsey (2010) public-domain source: "Reconstructions of global temperature that include greenhouse gas increases and other human influences (red line, based on many models) closely match measured temperatures (dashed line). Those that only include natural influences (blue line, based on many models) show a slight cooling, which has not occurred. The ability of models to generate reasonable histories of global temperature is verified by their response to four 20th-century volcanic eruptions: each eruption caused brief cooling that appeared in observed as well as modeled records." For more information, see attribution of recent climate change. References:
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| Date | |
| Source | natural_anthropogenic_models_narrow.png, in: If Earth has warmed and cooled throughout history, what makes scientists think that humans are causing global warming now? part of: Climate Q&A : Blogs. Publisher: Earth Observatory, part of the EOS Project Science Office, located at NASA Goddard Space Flight Center |
| Author | Rebecca Lindsey |
| Permission (Reusing this file) |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:18, 29 October 2012 | | 648 × 291 (30 KB) | Enescot | {{Information |Description ={{en|1=This graph shows two simulations of 20th century global mean temperatures compared with observed temperatures (dotted line). The red line (higher up on the right-hand side graph) shows simulated temperatures includ... |
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_compared_to_observations_(NASA).png){kind=link}