Home » Posts tagged 'global warming' (Page 3)

Tag Archives: global warming

Olduvai
Click on image to purchase

Olduvai III: Catacylsm
Click on image to purchase

Post categories

Post Archives by Category

Today’s Contemplation: Collapse Cometh XXIX–Are We Being Duped Regarding Global Warming?

November 20, 2023

Today’s Contemplation: Collapse Cometh XXIX

August 17, 2021

Tulum, Mexico (1986) Photo by author

Are We Being Duped Regarding Global Warming?

Today’s contemplation was prompted by an email my mum sent me. As she closes in on 80, I find that she’s becoming a bit more open-minded about things but remains somewhat of a skeptic when it comes to global warming/anthropogenic climate change. We periodically share thoughts on the state of the world, especially politics, and I think I’ve almost got her convinced to abandon her faith/trust in government…

Anyways, here is the comment about global warming she forwarded to me and my relatively quick response (typed up while I was engaged in replacing a floor/foundation for one of our greenhouses — I never considered a decade ago when I installed the first greenhouse, of three, that the mini-garden ties I was using to terrace our backyard would decay/rot so quickly so I am replacing them with concrete blocks and putting in a patio stone floor so that my eldest daughter who has taken over the greenhouse can have many years of use with it, hopefully). I have added some minor supplemental thoughts (in italics) and supporting links to a few sources (see endnotes).

Comment:

With global warming having become as much a political issue as a scientific inquiry, I went from wondering whether mankind might really be influencing the climate to someone questioning a science I do not understand. I am now worried we are being duped by people with an agenda, like keep the money gravy train running. No one has yet explained to my satisfaction the big ice age followed by warming then a mini-ice age, followed by warming, all before mankind was a significant presence on earth and did nothing but have a few campfires.

Response:

That human activity has an impact on our environment and ecological systems, I have little doubt. How could almost eight billion of us and our resource demands not? Especially the so-called ‘advanced’ economies[i]. There is growing evidence that shows that our industrial civilisation has surpassed several planetary biophysical limits and likely overloaded a number of the planet’s compensatory sinks due to the vast amounts of waste material produced in its quest to procure the minerals and energy that our tools require for their manufacture and pollutants produced through their use.[ii]

The issue with the focus on global warming/climate change/carbon emissions is multi-faceted —such stories are never as simple as we’re led to believe. Geologic history shows pretty clearly that the planet’s climate changes and probably most significantly as a result of the sun’s cycles.[iii]

Is human activity exacerbating natural cycles? Quite possibly[iv]. Is it as catastrophic as painted by some?[v] Only time can truly tell since modelling of complex systems is fraught with difficulties.[vi] One minor variation of one of many variables that are used to create future predictions can shift the eventual outcome significantly.[vii] Of course, humans don’t like uncertainty (which is really all that can be provided about the future — probabilistic scenarios that may or may not occur — no matter how complex one’s predictive model is) so we cling to and tend to believe forecasts that are at their root uncertain; their potential accuracy matters not.[viii]

One of the other complications of the narrative is that our ruling class always leverages crises to their advantage. Always. I have little doubt that the hyper focus on climate and carbon emissions is being used to pursue the ruling class’s primary motivation: control/expansion of the wealth-generating systems that provide their revenue streams.[ix]

The ‘problem’ of climate change is always presented with ‘solutions’ but those ‘solutions’ do not address carbon emissions in the least; in fact, there’s a good argument to be made that they actually increase them.[x] Much as the ruling class manufactures consent for any policy that the masses might question/reject (almost always via significant propaganda campaigns), they have created a narrative that is designed to persuade people to believe something that is increasingly being shown to be completely false and little more than marketing/sloganeering.[xi]

These ‘solutions’ also, conveniently, increase the revenue streams of the ruling class via taxes and complete replacement/overhaul of virtually all important technology (e.g., ‘renewable’ energy, electric vehicles, etc.). Scratch even gently below the surface of the ‘clean/green’ energy story and you discover it’s all basically bullshit.[xii] These technologies not only are not sustainable because of their dependence upon finite resources (including very much on the fossil fuel platform itself), but their production is hugely ecologically destructive. We are being sold a load of crap on various fronts so that the sociopaths that ‘control’ our world can profit. This being said, we do face some significant environmental and resource depletion challenges.

Probably the most dire predicament we face is ecological overshoot — too damn many people (especially living in ‘advanced’ economies) for a planet with finite resources.[xiii] The constant push for growth (which really is just to prolong/support the gargantuan Ponzi that our financial/economic/monetary systems have become) is the exact opposite of what we likely need to be doing; as is the push to ‘electrify’ everything.[xiv] The unfortunate thing for the future is that any species that overshoots its natural carrying capacity has only one way to be rebalanced: a massive die-off.[xv] When that occurs (and how it unfolds) is anybody’s guess…

As much as we tend to believe we understand our world and its complexities, I would contend we do not; at least, not very well. To compensate for this uncertainty we have developed all sorts of psychological mechanisms that lead us to believe particular narratives with some ‘certainty’. The beginning of a recent paper that challenges the mainstream story surrounding ‘renewable’ energy (that has been presented as a panacea for reducing carbon emissions; although I would argue Peak Oil is a more troubling issue in the energy needs of industrial civilisation[xvi]) is pertinent to this idea: “We begin with a reminder that humans are storytellers by nature. We socially construct complex sets of facts, beliefs, and values that guide how we operate in the world. Indeed, humans act out of their socially constructed narratives as if they were real. All political ideologies, religious doctrines, economic paradigms, cultural narratives — even scientific theories — are socially constructed “stories” that may or may not accurately reflect any aspect of reality they purport to represent. Once a particular construct has taken hold, its adherents are likely to treat it more seriously than opposing evidence from an alternate conceptual framework.”[xvii]

[i] https://archive.globalpolicy.org/social-and-economic-policy/the-environment/general-analysis-on-the-environment/45393-how-much-of-the-worlds-resource-consumption-occurs-in-rich-countries.html; https://www.livescience.com/20308-greedy-nations-top-resource-users-earth.html

[ii] https://www.sciencedirect.com/science/article/abs/pii/S0921800914001323; https://science.sciencemag.org/content/347/6223/1259855.full; https://ideas.ted.com/the-9-limits-of-our-planet-and-how-weve-raced-past-4-of-them/; https://www.stockholmresilience.org/research/research-news/2015-01-15-planetary-boundaries—an-update.html

[iii] https://www.ucsusa.org/resources/how-does-sun-affect-our-climate; https://phys.org/news/2017-03-sun-impact-climate-quantified.html

[iv] https://sciencing.com/what-human-activities-affect-the-carbon-cycle-12083853.html; https://www.e-education.psu.edu/earth103/node/680; https://phys.org/news/2010-12-human-affect-carbon.html

[v] https://www.populationconnectionaction.org/2021/08/12/ipcc-catastrophic-climate-change-is-coming/; https://www.npr.org/2021/08/09/1025898341/major-report-warns-climate-change-is-accelerating-and-humans-must-cut-emissions-; https://mahb.stanford.edu/wp-content/uploads/2018/08/deepadaptation.pdf

[vi] https://serc.carleton.edu/NAGTWorkshops/complexsystems/introduction.html; https://wtf.tw/ref/meadows.pdf

[vii] https://issues.org/climate-change-scenarios-lost-touch-reality-pielke-ritchie/?fbclid=IwAR1dbpSNqPXWr9QyfC-fDzlWrvfswO3LLZKj08szexcCb_7h7uRW2j7Qv54

[viii] https://www.amazon.com/Future-Babble-Pundits-Hedgehogs-Foxes/dp/0452297575

[ix] https://www.counterpunch.org/20 , 15/10/06/yes-there-is-an-imperialist-ruling-class/; https://www.bibliotecapleyades.net/sociopolitica/sociopol_globalelite07.htm

[x] https://www.theguardian.com/environment/blog/2012/jan/09/wind-turbines-increasing-carbon-emissions; https://www.amazon.com/Life-after-Fossil-Fuels-Alternative/dp/3030703347; https://www.euractiv.com/section/energy/opinion/mondaycop22-lower-co2-emissions-with-lower-carbon-solar-energy/

[xi] https://www.amazon.com/Manufacturing-Consent-Political-Economy-Media/dp/0375714499; https://www.amazon.com/Propaganda-Edward-Bernays/dp/0970312598; https://planetofthehumans.com; https://www.brightgreenlies.com

[xii] https://www.ucsusa.org/resources/environmental-impacts-renewable-energy-technologies; https://www.e-education.psu.edu/eme807/node/715’ https://www.nap.edu/read/12619/chapter/7; https://www.altenergymag.com/article/2015/08/the-dark-side-of-renewable-energy-negative-impacts-of-renewables-on-the-environment/20963/; https://www.routledge.com/Environmental-Impacts-of-Renewable-Energy/Spellman/p/book/9781482249460; https://www.instituteforenergyresearch.org/renewable/the-environmental-impact-of-lithium-batteries/

[xiii] https://www.pnas.org/content/99/14/9266; https://www.goodreads.com/book/show/319810.Overshoot

[xiv] https://medium.com/age-of-awareness/our-economy-is-a-ponzi-scheme-8fc56b9e594f; https://eand.co/how-the-economy-became-one-giant-ponzi-scheme-4ac84bf18738; https://moneyweek.com/economy/global-economy/601657/why-our-economy-is-a-giant-ponzi-scheme

[xv] https://thesenecaeffect.wordpress.com/2014/12/01/humans-in-ecological-overshoot-collapse-now-to-avoid-a-larger-catastrophe/; https://www.earthovershoot.org/who-we-are/frequent-questions.html; https://en.wikipedia.org/wiki/Overshoot_(population)

[xvi] https://www.greenpeace.org/international/story/29458/peak-oil-decline-coronavirus-economy/; https://www.scientificamerican.com/article/has-peak-oil-already-happened/; http://large.stanford.edu/courses/2014/ph240/liegl1/

[xvii] https://www.mdpi.com/1996-1073/14/15/4508/htm?fbclid=IwAR2ISt5shfV4wpFEc8jxbQnrrxyllyvZP-xDnoHhWrjGTQRIqUNfk3hOK1g

Future Headline: White House Prepares to Block Out the Sun

July 15, 2023

Future Headline: White House Prepares to Block Out the Sun

In a world full of unimaginable absurdity, we spend a lot of time thinking about the future… and to where all of this insanity leads.

“Future Headline Friday” is our satirical take of where the world is going if it remains on its current path. While our satire may be humorous and exaggerated, rest assured that everything we write is based on actual events, news stories, personalities, and pending legislation.

July 14, 2027: White House Prepares to Block Out the Sun

It has been four years since President Biden announced the “possible deployment” of Solar Radiation Modification back in 2023.

Solar Radiation Modification (SRM) is a way to partially block out the sun by flooding the earth’s atmosphere with special particles which reflect the sun’s rays, and therefore mitigate global warming.

The Biden administration approved funding to create the SRM in early 2024; and after more than three years of development, the system is now ready.

The 2023 White House report did state that “Gaps remain in our understanding of how SRM deployments might irreversibly alter the Earth’s climate system.”

However Acting President Kamala Harris says that she now understands everything she needs to know about deploying sun-blocking particles.

“We have to be thinking about what we think about, when we are thinking about the sun, and we think about the heat of the sun,” she recently explained. “That heat gets where it needs to go, and right now that’s the Earth. And that’s why global warming. It’s that basic.”

One reporter asked whether blocking out the sun would damage crop yields and agriculture, acting President Harris snapped back that cows are a major contributor to global warming, and their eradication through the SRM would force better dietary choices.

…click on the above link to read the rest…

Science Snippets: “If We Start Right Now …”

July 14, 2023

Science Snippets: “If We Start Right Now …”

Every day, I receive an email message from at least one person with this line, or something like it: “If we start right now …” The message then goes on to say that, if we start right now, we can fix the climate emergency. We can preserve habitat for human animals if we start taking action, collectively, right now.

The latest message came from Bill, of course. Bill knows the message from the corporate media is nonsense. In fact, the content of Bill’s message was one line, followed by a link to an article in Axios. The line written by Bill was, “More hopium soaked BS.” Sure enough, the article in Axios was, and is, hopium-soaked BS. Here’s the title of the paper published 13 June 2023, and then I’ll describe and quote from the article: “Climate extremes raise questions, concerns about faster warming.”

Nature Bats Last Substack is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber.

The article begins with a figure of daily global average sea surface temperatures plotted over time. Included in the graph is the 1982-2011 average, as if that’s a reasonable baseline. It includes the average for this period and it highlights sea surface temperature for all of 2022 and the first half of 2023.

Early on, the article includes a section called The big picture. Here’s the big picture, which includes embedded links to four additional stories: “Global surface air and ocean temperatures have spiked sharply in recent months, along with record low Antarctic sea ice, extreme heat events around the world, as Canada’s heat and wildfire crisis grips North America. Along with other developments, the combination of these factors have raised alarms regarding whether climate change is accelerating.”

…click on the above link to read the rest…

It’s a Race: Will Human Extinction Result from a Loss of Aerosol Masking or Ongoing Overheating?

January 24, 2023

It’s a Race: Will Human Extinction Result from a Loss of Aerosol Masking or Ongoing Overheating?

Ozone Layer Recovers, Limiting Global Warming: UN Report

January 10, 2023

Ozone Layer Recovers, Limiting Global Warming: UN Report

A UN-backed scientific panel tasked with assessing the effects of the 1989 Montreal Protocol – an international agreement to phase out Ozone Depleting Substances – has found that the ozone layer continues to strengthen, and as a result, the earth will avoid 0.3 – 0.5°C of global warming by 2100.

Under the 1989 agreement, 99% of ozone-killing chemicals, including chlorofluorocarbons (CFCs) that once kept fridges cool, were banned due to a thinning of the ozone – also known as an ozone hole – above Antarctica.

In around four decades, the thinning of the Antarctic hole will be completely reversed, according to the report. The much smaller hole above the Arctic is expected to repair much sooner, DW reports.

By 2066, the Antarctic ozone hole is expected to reduce to its size in 1980, while the Arctic hole will do the same around 2045. Thinning around other areas of the globe should recover around 2040.

Beyond CFCs, ozone-eating chemicals including halons, methyl chloroform, carbon tetrachloride, hydrochlorofluorocarbons (HCFCs) and methyl bromide were once abundant in refrigerators, air conditioners, aerosols, solvents and pesticides. 

These compounds attack ozone by releasing chlorine and bromine atoms that degrade ozone molecules in the stratosphere.

Since the substances were banned, declining concentrations of chlorine and bromine have helped to limit human exposure to harmful UV rays from the sun that can cause skin cancer, cataracts and suppress the immune system. -DW

“Thanks to a global agreement, humanity has averted a major health catastrophe due to ultraviolet radiation pouring through a massive hole in the ozone layer,” said UN Secretary-General Antonio Guterres last September 16, World Ozone Day.

Impacts on climate change?

Meanwhile, in a fringe benefit that won’t likely silence environmentalists, the panel affirmed the treaty’s positive impact on the climate.

…click on the above link to read the rest…

Arctic Ocean overheating

December 8, 2022

Arctic Ocean overheating

Arctic sea ice extent was 10.31 million km² on December 4, 2022. At this time of year, extent was smaller only in two years, i.e. in 2016 and 2020, both strong El Niño years. With the next El Niño, Arctic sea ice extent looks set to reach record lows.

The NOAA image on the right indicates that, while we’re still in the depths of a persistent La Niña, the next El Niño looks set to strike soon.

The image below shows high sea surface temperature anomalies near the Bering Strait on December 2, 2022, with a “hot blob” in the North Pacific Ocean where sea surface temperature anomalies are reaching as high as 7°C or 12.6°F from 1981-2011. The Jet Stream is stretched out vertically from pole to pole, enabling hot air to enter the Arctic from the Pacific Ocean and from the Atlantic Ocean.

The image below shows a forecast for December 5, 2022, of 2m temperature anomalies versus 1979-2000, with anomalies over parts of the Arctic Ocean near the top end of the scale.
On December 6, 2022, the Arctic was 6.63°C or 11.93°F warmer compared to 1979-2000, as illustrated by the image below.
The image below shows the daily average Arctic air temperature (2m) from 1979 up to December 6, 2022.

Given that we’re still in the depth of a persistent La Niña, these currently very high air temperature anomalies indicate that ocean temperatures are very high and that ocean heat is heating up the air over the Arctic.

Additionally, ocean heat is melting the sea ice from below.

Accordingly, Arctic sea ice has barely increased in thickness over the past 30 days, as illustrated by the navy.mil animation on the right.

This leaves only a very short time for Arctic sea ice to grow back in thickness before the melting season starts again, which means that there will be little or no latent heat buffer to consume heat when the melting season starts.
…click on the above link to read the rest…

When the Bullseye is the Wrong Target

December 8, 2022

When the Bullseye is the Wrong Target

Guy R. McPherson, Beril Kallfelz-Sirmacek, and William M. Kallfelz, 30 November 2022, The largest elephant in the room: aerosol masking. arXiv:2211.16115

Guy R. McPherson, Beril Kallfelz-Sirmacek, and William M. Kallfelz, 30 November 2022, Medium: The largest elephant in the room: aerosol masking.

    Relevant articles:

Counterpunch, 25 November 2022:

Harper’s, December 2022: (This article ignorantly cheers for near-term human extinction, thereby ignoring the aerosol masking effect and the rapid rate of environmental change associated with the demise of humans from Earth)

AVID Audio Course Description (Conservation Biology)

 

Latest Peer-Reviewed Journal Article:

McPherson, Guy R., Beril Sirmack, and Ricardo Vinuesa. March 2022. Environmental thresholds for mass-extinction events. Results in Engineering (2022), doi: https://doi.org/10.1016/j.rineng.2022.100342.

Global Dimming Keeping the Planet Habitable

December 8, 2022

Global Dimming Keeping the Planet Habitable

If you have not already seen it,  visitors to this blog  will have an interest in this 50-min documentary, “BBC Global Dimming Documentary”, via Gail Zawacki at her Wit’s End blog.

It relates to evidence obtained from the three-day aircraft grounding that occurred after 9/11 and the profound effects that just the U.S. Commercial Aircraft Flying has on Earth’s atmosphere. (One degree Centigrade increase  within three days.)
Quoting Professor Guy McPherson ;
“The impact of the aerosol masking effect has been greatly underestimated, as pointed out in an 8 February 2019 article in Science. As indicated by the lead author of this paper on 25 January 2019: “Global efforts to improve air quality by developing cleaner fuels and burning less coal could end up harming our planet by reducing the number of aerosols in the atmosphere, and by doing so, diminishing aerosols’ cooling ability to offset global warming.” The cooling effect is “nearly twice what scientists previously thought.” That this February 2019 paper cites the conclusion by Levy et al. (2013) indicating as little as 35% reduction in industrial activity drives a 1 C global-average rise in temperature suggests that as little as a 20% reduction in industrial activity is sufficient to warm the planet 1 C within a few days or weeks.”
Guy and I both believe a serious economic crash could be the end of us!
None of these risks operate in a vacuum, they are all connected.

Imagine what the carbon footprint of the largest most brutal military on the planet must be?
“According to its own study, in 2013 the Pentagon consumed fuel equivalent to 90,000,000 barrels of crude oil. This amounts to 80% of the total fuel usage by the federal government. If burned as jet fuel it produces about 38,700,000 metric tons of CO2…”

…click on the above link to read the rest…

Chris Hedges: Imminent Mass Extinction

November 21, 2022

Chris Hedges: Imminent Mass Extinction

https://youtu.be/cbH_o-96qZI

With thick ice gone, Arctic sea ice changes more slowly

November 18, 2022

With thick ice gone, Arctic sea ice changes more slowly

Beaufort Sea
Small remnants of thicker, multiyear ice float with thinner, seasonal ice in the Beaufort Sea on Sept. 30, 2016. Credit: NASA/GSFC/Alek Petty
› Larger view

The Arctic Ocean’s blanket of sea ice has changed since 1958 from predominantly older, thicker ice to mostly younger, thinner ice, according to new research published by NASA scientist Ron Kwok of the Jet Propulsion Laboratory, Pasadena, California. With so little thick, old ice left, the rate of decrease in ice thickness has slowed. New ice grows faster but is more vulnerable to weather and wind, so ice thickness is now more variable, rather than dominated by the effect of global warming.

Working from a combination of satellite records and declassified submarine sonar data, NASA scientists have constructed a 60-year record of Arctic sea ice thickness. Right now, Arctic sea ice is the youngest and thinnest its been since we started keeping records. More than 70 percent of Arctic sea ice is now seasonal, which means it grows in the winter and melts in the summer, but doesn’t last from year to year. This seasonal ice melts faster and breaks up easier, making it much more susceptible to wind and atmospheric conditions.

Working from a combination of satellite records and declassified submarine sonar data, NASA scientists have constructed a 60-year record of Arctic sea ice thickness. Right now, Arctic sea ice is the youngest and thinnest its been since we started keeping records. More than 70 percent of Arctic sea ice is now seasonal, which means it grows in the winter and melts in the summer, but doesn’t last from year to year. This seasonal ice melts faster and breaks up easier, making it much more susceptible to wind and atmospheric conditions.

…click on the above link to read the rest…

Growing concern over unseasonal warm spell in Europe

November 1, 2022

Growing concern over unseasonal warm spell in Europe

Warm October weather has seen many flock to the beach -- such as here at Hossegor, southwestern France -- but environmentalists see more evidence of climate change
Warm October weather has seen many flock to the beach — such as here at Hossegor, southwestern France — but environmentalists see more evidence of climate change GAIZKA IROZ AFP
Madrid (AFP) – October morning temperatures topping 30 Celsius (86 Fahrenheit) in Spain may have brought cheer to the tourists, but they are provoking concern among environmentalists.

The mercury has been rising well above the norm across vast swathes of Europe, from Spain to as far north as Sweden.

After a summer marked by repeated heatwaves across much of the continent, Europe is experiencing exceptional temperatures even as it heads into the start of autumn — a sign of accelerating climate change.

“The month has not yet ended but we can already say practically without fear of contradiction that it will be the hottest (in Spain) since 1961,” when records began to be collated, said Ruben del Campo of Spain’s meteorological service Aemet.

If extrapolated data from historical reconstructions is taken into account, he added, this past month will have been Spain’s warmest October for fully a century.

“One, two days above 30 degrees is normal” for Spain, said del Campo. “But so many days, no. These are summer temperatures, whereas we are already heading into autumn.”

On Friday morning, the northern resort of San Sebastian saw the temperature hit 30.3 Celsius at 8:30 am (0630 GMT) — well above the seasonal average.

With forest fires declared in recent days in the Basque region, of which San Sebastian is a part, authorities have banned barbecues and fireworks to keep risks to a minimum.

The unseasonal warm spell has brought a new word into the Spanish lexicon — “verono” — an amalgam of verano (summer) and otono (autumn).

And it has left del Campo highlighting a “notable acceleration” in climate change over the past decade, exposing Spain to increasing creeping desertification.

…click on the above link to read the rest…

Climate crisis: UN finds ‘no credible pathway to 1.5C in place’

October 29, 2022

Climate crisis: UN finds ‘no credible pathway to 1.5C in place’

Failure to cut carbon emissions means ‘rapid transformation of societies’ is only option to limit impacts, report says

A firefighter sets fire to land in an attempt to prevent wildfires from spreading in Gironde, south-west France.
A firefighter sets fire to land in an attempt to prevent wildfires from spreading in Gironde, south-west France. A rise in global temperature of 1C to date has already contributed to climate disasters. Photograph: Thibaud Moritz/AFP/Getty Images

There is “no credible pathway to 1.5C in place”, the UN’s environment agency has said, and the failure to reduce carbon emissions means the only way to limit the worst impacts of the climate crisis is a “rapid transformation of societies”.

The UN environment report analysed the gap between the CO2 cuts pledged by countries and the cuts needed to limit any rise in global temperature to 1.5C, the internationally agreed target. Progress has been “woefully inadequate” it concluded.

Current pledges for action by 2030, if delivered in full, would mean a rise in global heating of about 2.5C and catastrophic extreme weather around the world. A rise of 1C to date has caused climate disasters in locations from Pakistan to Puerto Rico.

If the long-term pledges by countries to hit net zero emissions by 2050 were delivered, global temperature would rise by 1.8C. But the glacial pace of action means meeting even this temperature limit was not credible, the UN report said.

Countries agreed at the Cop26 climate summit a year ago to increase their pledges. But with Cop27 looming, only a couple of dozen have done so and the new pledges would shave just 1% off emissions in 2030. Global emissions must fall by almost 50% by that date to keep the 1.5C target alive.

Inger Andersen, the executive director of the UN Environment Programme (UNEP), said: “This report tells us in cold scientific terms what nature has been telling us all year through deadly floods, storms and raging fires: we have to stop filling our atmosphere with greenhouse gases, and stop doing it fast.

…click on the above link to read the rest…

Will global warming drive us extinct? A review of Peter Ward’s “Under a Green Sky”

October 19, 2022

Will global warming drive us extinct? A review of Peter Ward’s “Under a Green Sky”

Preface. Thank goodness for world peak oil production in 2018. And peak coal in 2013. Since oil is that master resource that makes every product and activity possible, including oil itself and coal and natural gas, peak oil means peak everything.  Oil, specifically the 25% of a barrel that’s diesel, is used by nearly all heavy-duty trucks, locomotives, and ships. Petroleum and natural gas are the for 500,000 products. And fossils are essential for products needing high heat in their manufacture, like cement, steel, iron, glass, ceramics, microchips, bricks and more — there are no electric or hydrogen substitutes and with peak oil in 2018, no time to invent them.

So I would argue we don’t have enough fossil fuels left to reach the hothouse world Ward proposes.  You might reply that tipping points have been or will be reached, methane from permafrost, the amazon rainforest turns into grass and so on.

Sure, but there are negative feedback loops. Diatoms evolved about 100 million years ago and consumed so much CO2 they created the polar icecaps for the first time.  They are doing very well with the increased CO2, dying, and sinking to the ocean floor in even greater numbers. Nor are methane hydrates likely to ever be exploited or released all at once.  And see these posts about why we may not be driven extinct by climate change and at worst reach low-medium IPCC projections.  And CO2 rates in the Permian and other extinctions were as high as today’s, so it’s not true that what’s happening now is unprecedented, and lasted for 10,000 to 20,000 years of volcanic pulses from deep in the earth, boiling their way to the surface via coal, natural gas and oil deposits…

…click on the above link to read the rest…

Will Any Humans Become Post-Carbon?

October 19, 2022

Photo by Roxanne Desgagnés

…click on the above link to read the rest…

Risk of passing multiple climate tipping points escalates above 1.5°C global warming

September 11, 2022

Risk of passing multiple climate tipping points escalates above 1.5°C global warming

09/09/2022 – Multiple climate tipping points could be triggered if global temperature rises beyond 1.5°C above pre-industrial levels, according to a major new analysis published in the journal Science. Even at current levels of global heating the world is already at risk of passing five dangerous climate tipping points, and risks increase with each tenth of a degree of further warming. An international research team synthesised evidence for tipping points, their temperature thresholds, timescales, and impacts from a comprehensive review of over 200 papers published since 2008, when climate tipping points were first rigorously defined.
Risk of passing multiple climate tipping points escalates above 1.5°C global warming
Tipping points world map. Figure by Biermann/PIK, based on Armstrong McKay et al, 2020

The research, published in advance of a major conference “Tipping Points: from climate crisis to positive transformation” at the University of Exeter (12-14th September), concludes human emissions have already pushed Earth into the tipping points danger zone. Five of the sixteen may be triggered at today’s temperatures: the Greenland and West Antarctic ice sheets, widespread abrupt permafrost thaw, collapse of convection in the Labrador Sea, and massive die-off of tropical coral reefs. Four of these move from possible events to likely at 1.5°C global warming, with five more becoming possible around this level of heating.

Lead author David Armstrong McKay from Stockholm Resilience Centre, University of Exeter, and the Earth Commission says, “We can see signs of destabilisation already in parts of the West Antarctic and Greenland ice sheets, in permafrost regions, the Amazon rainforest, and potentially the Atlantic overturning circulation as well.”

“The chance of crossing tipping points can be reduced by rapidly cutting greenhouse gas emissions”

“The world is already at risk of some tipping points. As global temperatures rise further, more tipping points become possible.” he adds. “The chance of crossing tipping points can be reduced by rapidly cutting greenhouse gas emissions, starting immediately.”

…click on the above link to read the rest of the article…

Post navigation

← Older posts Newer posts →

Olduvai IV: Courage
Click on image to read excerpts

Olduvai II: Exodus
Click on image to purchase

Click on image to purchase @ FriesenPress