Climate Science Glossary

Term Lookup

Enter a term in the search box to find its definition.

Settings

Use the controls in the far right panel to increase or decrease the number of terms automatically displayed (or to completely turn that feature off).

Term Lookup

Settings


All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

Home Arguments Software Resources Comments The Consensus Project Translations About Support

Bluesky Facebook LinkedIn Mastodon MeWe

Twitter YouTube RSS Posts RSS Comments Email Subscribe


Climate's changed before
It's the sun
It's not bad
There is no consensus
It's cooling
Models are unreliable
Temp record is unreliable
Animals and plants can adapt
It hasn't warmed since 1998
Antarctica is gaining ice
View All Arguments...



Username
Password
New? Register here
Forgot your password?

Latest Posts

Archives

Pin It

Human vs. Natural Contributions to Global Warming

The percentage contribution to global warming over the past 50-75 years is shown in two categories, human causes (left) and natural causes (right), from various peer-reviewed studies (colors).  The studies used a wide range of independent methods, and provide multiple lines of evidence that humans are by far the dominant cause of recent global warming.  Most studies showed that recent natural contributions have been zero or slightly in the cooling direction, thereby masking part of the human contribution and in some cases causing it to exceed 100% of the total warming.

The studies are Tett et al. 2000 (T00, dark blue), Meehl et al. 2004 (M04, red), Stone et al. 2007 (S07, green), Lean and Rind 2008 (LR08, purple), Huber and Knutti 2011 (HK11, light blue), Gillett et al. 2012 (G12, orange), Wigley and Santer 2012 (WG12, dark green), Jones et al. 2013 (J13, pink), IPCC AR5 (IPCC, light green), Ribes et al. 2016 (R16, dark blue), and Gillett et al. 2021 (G21, yellow).  The numbers in this summary are best estimates from each study; uncertainty ranges can be found in the original research.


SkS Resources that use this Graphic


Images

Printable Version | Back to Graphics by Skeptical Science


Creative Commons License Skeptical Science Graphics by Skeptical Science is licensed under a Creative Commons Attribution 4.0 International License.


The Consensus Project Website

THE ESCALATOR

(free to republish)


© Copyright 2024 John Cook
Home | Translations | About Us | Privacy | Contact Us