Talk:Physical impacts of climate change

Wiki Education Foundation-supported course assignment

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): 1will i am1. Peer reviewers: Scheckelse.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 06:37, 17 January 2022 (UTC)

What is this page about?

I *think* it is, or should be, about the physical impacts of global warming. Within the context of how wiki has arranged the subjects: which is to say, GW is the what's-happening-now stuff, and climate change is the topic in general. And the scope of the topic is probably best picked up from IPCC ARX WG2; e.g. http://www.ipcc.ch/pdf/assessment-report/ar5/wg2/ar5_wgII_spm_en.pdf.

In which case, what's the section "Consistency of evidence for warming" for (that is but one example)? William M. Connolley (talk) 12:31, 20 December 2015 (UTC)

Our recent renaming most have improved consistency about a dozen of these pages. I've clarified the lede, so that it's now clearly about human-caused climate change, and not climate change in general. Femke Nijsse (talk) 17:01, 19 November 2019 (UTC)

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Extreme events: fire

I have added more information about possible extreme wildfire events as a result of climate change. This involves the causes of increased wildfires as well as explaining the risk itself. — Preceding unsigned comment added by 1will i am1 (talk • contribs) 16:37, 6 March 2018 (UTC)

Moved to here content from global warming

I've just added a piece of text with references that I've moved from global warming as that should be an overview article but not go into too much depth on content that is covered in sub-articles. The first sub-article is effects of global warming but even that one has a sub-article which is, I guess, this one here. (if it is now introducing repetitive information, please condense/cull it) EMsmile (talk) 01:12, 9 May 2018 (UTC)

Reference no longer available

Could someone please find the right reference for this, as the link is no longer working: EMsmile (talk) 03:08, 6 June 2018 (UTC)

Removed content about increasing volcano activity

I have taken out the following content from the article because none of that kind of information can be found in the IPCC Sixth Assessment Report. So I think it's not a mainstream, well established hypothesis:

Volcanoes

See also: Post-glacial rebound

The retreat of glaciers and ice caps can cause increased volcanism. Reduction in ice cover reduces the confining pressure exerted on the volcano, increasing deviatoric stresses and potentially causing the volcano to erupt. This reduction of pressure can also cause decompression melting of material in the mantle, resulting in the generation of more magma. Researchers in Iceland have shown that the rate of volcanic rock production there following deglaciation (10,000 to 4500 years before present) was 20–30 times greater than that observed after 2900 years before present. While the original study addresses the first reason for increased volcanism (reduced confining pressure), scientists have more recently shown that these lavas have unusually high trace element concentrations, indicative of increased melting in the mantle. This work in Iceland has been corroborated by a study in California, in which scientists found a strong correlation between volcanism and periods of global deglaciation. The effects of current sea level rise could include increased crustal stress at the base of coastal volcanoes from a rise in the volcano's water table (and the associated saltwater intrusion), while the mass from extra water could activate dormant seismic faults around volcanoes. In addition, the wide-scale displacement of water from melting in places such as West Antarctica is likely to slightly alter the Earth's rotational period and may shift its axial tilt on the scale of hundreds of metres, inducing further crustal stress changes.

Current melting of ice is predicted to increase the size and frequency of volcanic eruptions. In particular, lateral collapse events at stratovolcanoes are likely to increase, and there are potential positive feedbacks between the removal of ice and magmatism. EMsmile (talk) 13:03, 8 February 2022 (UTC)

References