@peterdutoit@mastodon.green
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peterdutoit

@peterdutoit@mastodon.green

𝗙𝗼𝘂𝗻𝗱𝗲𝗿: FutureWork IQ | I speak about mitigation and adaptation in the face of the climate crisis | b. 316 ppm | 🇿🇦

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peterdutoit, to climate
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Essential weekend viewing!

🎬 The 2024 F-List Awards — The tales that the fossil fuel industry and their ad agencies would rather keep hidden. https://youtu.be/wkgcqKmRd3U

Great work from the Clean Creatives team! (https://cleancreatives.org/)

peterdutoit, to climate
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New record for largest 12-month gain (4.7 ppm) in CO2 concentration ever observed

“If this El Niño follows the pattern of the last El Niño, the world might experience a very high growth rate for several more months.”— Ralph Keeling, director CO2 Program Scripps Institution of Oceanography

Source: https://keelingcurve.ucsd.edu/2024/05/08/largest-year-over-year-gain-in-keeling-curve-set-in-march/

El Niño growth surges have been happening on top of the long-term increase in CO2 growth tied to rising fossil fuel emissions, which have increased 5% from 2016

peterdutoit, to climate
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When are we projected to cross +1.5ºC permanently?

In March 2023 the date was 12 years in the future
In March 2024 the date is now 9 years away

What a difference a year makes.

Data: https://cds.climate.copernicus.eu/apps/c3s/app-c3s-global-temperature-trend-monitor

peterdutoit, to climate
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These instrument readings serve as a stark reminder of our current trajectory.

They not only reflect our past and present actions but also foreshadow a future dictated by them - ie a world that has heats to between 2.1-3.5ºC

It is only when these figures begin to reverse that we can confidently say our efforts to change course are effective.

Pay attention to the instruments!

Graphic source: https://fediscience.org/@ZLabe/112340885914056186

peterdutoit,
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@neileroberts Perfect!

peterdutoit, to random
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“April 2024 was the moistest April on record for the planet, continuing a run of record-moist months that dates back to last year.

“62% of Earth had above normal moisture content during the month, which is being strongly influenced by warming seas and the remnant effect of El Niño.

“In my opinion, this moistening trend is just as important as the warming trend as it relates to the potential increase in flood frequency and/or intensity into the future.”— Ben Noll

peterdutoit, to climate
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NEW from CCS:

April 2024 was +1.58°C above preindustrial.

12-month running mean (May’23 to April ‘24) +1.61°C above preindustrial.

Reminder: Hansen, Makiko & Ruedy on January 12 2024:

“We expect record monthly temperatures to continue into mid-2024 due to the present large planetary energy imbalance, with the 12-month running-mean global temperature reaching +1.6-1.7°C relative to 1880-1920”

https://climate.copernicus.eu/surface-air-temperature-april-2024

peterdutoit,
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Hansen et al cont.

“and falling to only +1.4 ± 0.1°C during the following La Nina. Considering the large planetary energy imbalance, it will be clear that the world is passing through the 1.5°C ceiling, and is headed much higher, unless steps are taken to affect Earth’s energy imbalance.”

http://www.columbia.edu/~jeh1/mailings/2024/AnnualT2023.2024.01.12.pdf

peterdutoit,
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Also Hansen et al - March 29, 2024:

“We expect the average of the El Nino maximum and the La Nina minimum of global temperatures to be ~1.5°C. Given Earth’s huge energy imbalance more energy coming in than going out – it will be clear that for all practical purposes the 1.5°C global warming level has been reached in the mid-2020s.”

http://www.columbia.edu/~jeh1/mailings/2024/Hopium.MarchEmail.2024.03.29.pdf#page1

peterdutoit, (edited ) to brazil
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As we bear witness to the devastation in :

“Reminder: global warming brings a lot more extreme rain. It’s basic physics, the data prove it, and climate scientists have warned you for 30 years about this.

“Peer-reviewed study: https://www.nature.com/articles/s41612-021-00202-w

“It will get worse until we stop emitting.

“Your home [town or city] could be next.”— @rahmstorf

peterdutoit, to brazil
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We absolutely cannot ignore what is happening in .

The stories and images are heartbreaking.

https://youtu.be/URmRPBo48ao

This is all taking place with background heating of +1.3ºC (latest 5-year average) above preindustrial.

Our cities, our infrastructure cannot cope at this level of heating.

What happens when we reach 1.5º or 2ºC?

peterdutoit,
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@GregDance yes that is correct. That has been the 12-month running mean.

However, for it to be considered permanent it has to be the average for a decade or two (they are working to adjust this) but at the moment, as mentioned above the 5-year average is +1.3.

Here is the projection for when we cross 1.5ºC permanently (2030-2033)

https://cds.climate.copernicus.eu/cdsapp#!/software/app-c3s-global-temperature-trend-monitor?tab=app

And i agree we are in deep trouble.

peterdutoit, to climate
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This story out of (The Continent May 4, pg. 12 https://www.thecontinent.org/_files/ugd/287178_24a35d061e2941dbbde15e59b9944af5.pdf)

Also research: We are underestimating how much extreme rainfall increases as we continue to heat. (See https://www.pik-potsdam.de/en/news/latest-news/future-floods-global-warming-intensifies-heavy-rain-2013-even-more-than-expected.

Our infrastructure cannot cope with +1.3ºC of heating. What happens at 1.5º or 1.7 or 2ºC

peterdutoit,
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@Niall they do some incredible reporting on the African continent.

Love their work!

peterdutoit, (edited ) to climate
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We are ready to move into Zone 1 on this map.

Between 1.7-2.3°C some places will be contending with 200+ days where the combined temperature and humidity conditions will pose a risk of mortality to many individuals.

Urgent conversations need to get underway of how to keep people safe.

Data: Pg. 16, https://www.ipcc.ch/report/ar6/syr/downloads/report/IPCC_AR6_SYR_FullVolume.pdf

peterdutoit,
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@ralf and this is at 1.3°C of heating. (Latest 5-year average above preindustrial)

What happens at 1.5° or 1.7° all projected within the next 16 years?

peterdutoit,
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@mj for the purpose of this map they used a synthesis study, but there is a large body of work examining the relationship between heat-humidity conditions and mortality which underpins this risk assement.

peterdutoit, to climate
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News from South Africa - the country's Climate Change Bill is about to become law!

You can read the bill here: https://www.parliament.gov.za/storage/app/media/Bills/2022/B9_2022_Climate_Change_Bill/B9_2022_Climate_Change_Bill.pdf

peterdutoit, (edited ) to climate
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~ The Shared Socioeconomic Pathway that we seem to be on is SSP2-4.5

What does this mean?

Near-term - ie in the next 16 years - temperatures will reach between 1.2° to 1.8°C permanently. (IPCC, very likely)

In 2024, we are already at a permanent 1.3°C and 1.5°C is imminent (projected 2030-2033)

2ºC is almost certain.

We need to figure out rather quickly what the world will look like at this threshold and prepare as best we can.

peterdutoit,
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@carbonwoman we will not be able to stay below 2° - that pathway is slipping away just as fast as the 1.5°C pathway did.

Here is how we know:

peterdutoit, to brazil
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being impacted by an extreme precipitation event.

Footage here: https://t.me/Disaster_News/3605

Background instrument readings:

+1.3ºC (latest 5-yr avg. above preindustrial)
+0.9ºC sea surface temperature above preindustrial
419ppm CO2 (2023 avg.)
1902 ppb CH4 (2023 avg.)

1.5ºC imminent

peterdutoit, to random
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Reminder: "natural" gas is not a "transition fuel" it is a fossil fuel.

"Natural" gas composition:

> Methane 97% (CH4)
> Ethane 0.919% (C2H6)
> Propane 0.363% (C3H8)
> Butane 0.162% (C4H10)
> Carbon dioxide 0.527% (CO2)
> Oxygen 0-0.08% (O2)
> Nitrogen 0.936% (N2)
> Other noble gases (e.g., He, Ne, Ar, Xe)

Lets call it what it is - methane gas - with a much greater global warming potential than CO2 in the short-term.

peterdutoit,
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@JustineRobertson indeed.

"Numerous scenarios run in this study indicate that the benefits of gas do not outweigh coal at certain methane leakage rates. Super-emitting gas production systems being assessed globally by satellites and high-altitude aircraft are demonstrating gas leakage rates that meet emissions intensity parity with coal."

https://iopscience.iop.org/article/10.1088/1748-9326/ace3db

peterdutoit,
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@JustineRobertson not exactly :) and its worth having the above study linked to this conversation.

peterdutoit, to random
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Certain places are at increased risk of heat-humidity stress as we continue to heat. Many of these places are home to hundreds of millions of people. Here is what is currently playing out in Thailand. https://www.bloomberg.com/news/articles/2024-04-29/thailand-reels-under-heat-wave-as-some-regions-set-new-record

Instrument readings (latest 5-year average)

🌡️ +1.3ºC above preindustrial

What happens to these places when we cross 1.5ºC permanently in the near future?

peterdutoit,
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