Talk:Little Ice Age volcanism

Hi Marco,

Here is some feedback from a non-specialist reader. I liked the visuals and though they added impact to your article. I liked the description of the visuals. As I am not so young, I felt pretty familiar with the content but feel that the article is well-written and well-organized. Here are some suggestions:

1. Have a look at use of tense in your paper. There is sometimes a mix of past tense and present tense in sentences and it's not always clear whether you are talking about an event or impact from an event which occurred in the past (talking about past time) and talking about impact now (present time) or impact up to now (past and present time). 2. I wonder whether you should refer to the visuals in the text so that the reader knows when they should look at them (not sure what the Wikipedia policy is for this). 3. I would like to know more about the eruptions in Section 3.

Thanks,

Textbookzoom3

Hi Marco, — Preceding unsigned comment added by Textbookzoom3 (talk • contribs) 13:29, 20 October 2020 (UTC)

Your page is on a very interesting topic - on a short timescale which geologists rarely consider, well done! Some minor points which you may consider are as follows:

There is a large gap between intro and table of contents (TOC), can this be removed in formatting?

In your introduction, "massive volcanic activities" sounds informal, could you use an alternative word for massive? Also, "It was the major driving force of the global cooling" - you need a reference for this claim. "Ashes burst out", this also sounds informal, is there a geological term to describe this which may already have a wiki page you can link to?

Talking about the volcanic eruptions which occurred before the methods to investigate such eruptions would make more sense to me as a reader. Then the effects of the volcanism follows on chronologically.

Good use of graphs with a reference, but the wiki citation should be added also to give credit to the original author.

You should relate to the figures in the text.

Well done again!

Hayley

Hrhunt (talk) 02:04, 12 October 2020 (UTC)

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Hi Marco,

1. You may add some keys for your figures; like in fig 7-9 (the sequence is messed up) what do those grey and orange shallow represent? & perhaps what proxies they used to conduct paleo-reanalysis

2. You listed all 13 volcanic eruptions in section 3. You may draw or find a graph that plots temperature against time, and annotates how the volcanisms affect the temperature. Perhaps that’s your fig6, but I don’t know what NH, Briffa 01, the grey line mean.

3. You said there were 16 eruptions and cooling events, but I found this might be confusing. You may say there were 3 events and 13 eruptions.

4. You mentioned the crisis of the Ottoman Empire and the Ming-Qing Transition. You may add a section on explaining how the volcanism-induced ice age affected the ancient empires. That would be interesting.

Nice work!

Oscar - 20201012

Hi Marco,

Your page is informative about the cause and consequences of Little Ice age. it is easy to follow and understand. I would like to provide some suggestions based on my observatiosn.

- Langauge - grammar (There are minor issues with singular and plurals) When a volcano erupts, ashes burst out of the vent together with magma and forms a cloud that covers the atmosphere. The ashes act as an isolating layer that block out a proportion of solar radiation, causing global cooling.

- Communication Good to have short and clear sentences!

However, some sentenses are complicated, I suggest you to use more simple and active voice to tell the idea, it is easier for the readers to follow. "They compared the obtained samples with that of the same existing species to get the result." Maybe it is suitable to change into "They use existing species to compare with the collected samples."

- Visuals I wish you can add more interesting figures. For examples, the figures are mostly climate variations recorded in different methods or different periods. I hope you can reduce the number of that kind of figures and just use one or two climate figures to explain the main point.

-Content It seems to be a little confusing for "Ice cap measurement" and "measuring the concentration of CO2" Also, i wonder if the little Ice Age Volcanism only present in the near 500 years? Maybe you can further do explanations on that too.

Keep going!

Kenneth — Preceding unsigned comment added by Waikinl (talk • contribs) 10:37, 13 October 2020 (UTC)

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Hi Marco,

Your page is written neatly and is easy to understand.

Below are some suggestions:

In the section explaining global cooling, “earth surface” may be used instead of “surface” to prevent confusion.

You may include more details of the major eruptions. For example, the estimated volume of materials erupted, and the extent witch the ashes covered the earth. Besides, the frequency or magnitude of eruptions during the Little Ice Age may be compared to that in the other geological times, so as to explain why there was a period of global cooling.

Short form of terms like “NH growing season” and “DJF Australian Monsoon Index” may be explained.

A schematic diagram may be added to help readers visualize El Nino.

Nice work Marco! Keep going!

Nathalie

Nykwong (talk) 11:07, 17 October 2020 (UTC)

Hi Marco,

Good to read your work. It is particularly interesting and the overall page is well written.

Below are my suggestions.

1. In the introduction section, use hyperlink for the volcanic and magma. You could also hyperlink Past Global Change (PAGES), since it has a dedicated webpage also. 2. There seems to be a disconnect between the introduction and methodology. The methodology also seems to be a general description and does not particularly focus on the volcanism of the Little Ice age. The first statement on methodology could help to connect the introduction with the rest of the subsection. 3. Figure 4 needs editing to remove some text in the figure itself. 5. Figure 5 needs to be cited if since it is not your won work. A general enlarge of the figures will be helpful to readers.

Overall, this is a brilliant contribution.

Cheers, Blessing — Preceding unsigned comment added by BlessingAdeoti (talk • contribs) 01:12, 20 October 2020 (UTC)

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Hi Marco,

Your topic is interesting and you have got great improvements. I have some comments for you.

1. The topic sentences of cooling effect in volcanic eruption can be more related to the definition of cooling, like how to define or quantify cooling?

2. If the listed items in the table are all stratovolcano, there is no need to compare.

3. Good use for map to locate the volcanos!

4. Can include more blue-links and more citations.

5. Why the ages/periods before 1640 cannot be measured ? Maybe you can tell about this too.

6. In general, you can work more on topic sentences and let readers follow your ideas more easily

Keep going ;)

Kenneth 15Nov, 20

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Hi Marco,

Good use of graphs and tables! You’ve included more information about the eruption events. Nice work!

Below are some suggestions for you:

You may specify in the introduction that there were “3 main cooling periods”.

I recommend using “Geophysical Impact” or “Impact on Atmosphere and Hydrosphere” as the section title instead of “the Geophysical Impact”.

“eruptions caused the fall of the temperature” may be changed to “caused temperature drop”

About the El Nino event, do you mean that 20 years was the average frequency back then in the 17th century? Or is it an average over a longer time period? You may want to clarify a bit, since in present days El Nino is happening every 2-7 years.

Good work! Keep it up!

Nathalie

Nykwong (talk) 14:12, 15 November 2020 (UTC)

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Hi Marco,

You did a lots of improvements! Like the map and diagrams you added. They do help visualize your ideas. Here are some comments for you.

1. For the descriptions of the diagrams and illustrations, you may use present tense.

2. For the table of 'The major explosive volcanic eruptions in Little Ice Age', I don't really understand the numbers of the 'season' column represent. Is 1 mean first quarter of the year or spring or anything else?

3. You can also hyperlink those volcanoes when there is an existing wiki page.

4. For the map you made, you can also indicate the name of volcanoes on the map. As readers do not know where the Tambora and Galunggung events were located. They are both yellow and in Indonesia.

5. You may also show the differences between stratovolcano and other types of volcanoes.

Nice Work! Oscar

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Hi Marco, Hayley here again!

You have resolved the TOC formatting issue. I like how you have restructured the page with the ages of the volcanic eruptions first before the methods. Good use of figures and the addition of further reading is good!

Some small things:

One stratovolcano in your table is not hyperlinked. Galunggung - the 'g' is not hyperlinked. In your figure captions - do you need figure labels? present tense would be better for captions as the figure is showing you something.

Well done!

Hayley Hrhunt (talk) 09:54, 16 November 2020 (UTC)

Did you know nomination

The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.

The result was: rejected by SL93 (talk) 22:34, 11 January 2021 (UTC)
Abandoned by nominator.

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• Comment or view
• Article history

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graph of average temperature on the Earth

• ... that Little Ice Age volcanism is likely to have caused global cooling? Source: "You are strongly encouraged to quote the source text supporting each hook" (and [link] the source, or cite it briefly without using citation templates)

• Reviewed: SY Gunilda
• Comment: Part of Regional Geology course

Moved to mainspace by Marcolam308 (talk). Nominated by Graeme Bartlett (talk) at 03:30, 23 November 2020 (UTC).

• I oppose the hook. Based on the reference for this very image, there was essentially no global cooling during the so-called Little Ice Age. LIA was a regional phenomenon. See Hawkins, Ed (January 30, 2020). "2019 years". climate-lab-book.ac.uk. Archived from the original on February 2, 2020. RCraig09 (talk) 23:28, 26 November 2020 (UTC)

That's not entirely true. It seems that there was some global cooling towards the end of the little ice age due to volcanism, as shown be the pages2k consortium. Femke Nijsse (talk) 10:00, 8 December 2020 (UTC)

I agree that there were a couple of volcano-related temperature declines during the LIA. But the hook misleadingly ~suggests that volcanism-induced cooling was "special" to the LIA. The pages2k chart shows such declines outside the LIA as well. Such a hook might be generally appropriate to Volcanism or Volcano, but not specific to the LIA. —RCraig09 (talk) 19:29, 8 December 2020 (UTC)

• This is a student nomination from a student who is not editing anymore. Nomination is one day outside the seven day window. There's scattered unsourced sentences, but they're quite general and the article would meet length requirements even if they were simply deleted. Earwig is only picking up short phrases. Clearly the hook is causing quibbles, so a new one could be used. RCraig09 and Femke Nijsse, if either of you have time could you take a quick look to see if the article is accurate as a whole, and if there are interesting points you feel would serve as a hook? CMD (talk) 03:27, 11 December 2020 (UTC)

I think it's a shame the article hasn't used modern sources much. The term "little ice age" has fallen somewhat out of fashion, so that may explain the bias towards older sources. Our article now says there have been three cooling periods, and I can only discern the last one in https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6675609/ (and another one just before LIA). I'm not sure what quality we expect of DYK articles, but I suspect doesn't meet those. If it does, we could add:

ALT1 ... that Little Ice Age volcanism likely caused global cooling in the early 19th century.

• Definitely, any hook should be limited to shorter periods of time, to avoid any implication that the earth as a whole experienced a substantial, persistent net cooling over 3-5 centuries. Separately: besides the hook, I agree with User:Femkemilene/Femke Nijsse that the article likely doesn't meet Wikipedia standards, and correcting the issues might demand a long time of editors conversant with quite technical subject matter. —RCraig09 (talk) 18:49, 13 December 2020 (UTC)

ALT2 ... that Little Ice Age volcanism likely caused short periods of global cooling in the __th—__th centuries.

Quality-wise, DYK articles are required only to be neutral, appropriately sourced, and without plagiarism. It's not too high a bar, and I feel you both may be operating from higher standards. I noticed Marcolam308 has made a new edit, so perhaps they may further improve the article and/or comment here. CMD (talk) 15:57, 16 December 2020 (UTC)

• Marking for closure as abandoned by nominator, who has not responded to multiple pings on this and other nominations over the past several weeks. BlueMoonset (talk) 17:29, 11 January 2021 (UTC)

"Medieval accounts of eclipses shine light on massive volcanic eruptions"

News item at Nature: https://www.nature.com/articles/d41586-023-00939-9

"The great Japanese poet Fujiwara no Teika wrote in his diary of an unusually long and dark lunar eclipse in December 1229, observing that it was as if the Moon had entirely “disappeared”. Now climatologists have used Teika’s account and dozens of other lunar observations made by medieval scholars, clerics and monks to help pin down the timing and impact of volcanic eruptions from 1100 to 13001.

The research, published in Nature on 5 April, corroborates data extracted from ice cores and could help scientists to understand the run-up to the cold period known as the Little Ice Age, as well as the effects of a controversial technique proposed for manipulating the climate.

“If we really want to understand how past volcanic eruptions have impacted climate and societies, I think we need to combine historical archives, where they are available, with ice cores and tree rings,” says Sébastien Guillet, a palaeoclimatologist at the University of Geneva, Switzerland, and a co-author of the study. “None of these methods can work alone.”

Interesting article. I haven't read the peer-reviewed paper yet, which is linked from this article. Pete Tillman (talk) 15:48, 12 April 2023 (UTC)