better to know...?

Meet Climate Skeptic Jacob Rees-Mogg, New UK Energy Secretary

by A. Macaskill and P. Sandle, Sep 8, 2022 in ClimateChangeDispatch

Britain appointed lawmaker Jacob Rees-Mogg, who has expressed skepticism about the need to fight ‘climate change’ as the new business secretary, raising concerns that he could delay the target of reducing net zero emissions by 2050.

Rees-Mogg, nicknamed “the honorable gentleman from the 18th century” because of his poshness and trademark double-breasted suit, was on Tuesday put in charge of the Department for Business, Energy and Industrial Strategy, which is responsible for the government’s strategy on ‘climate change’. [bold, links added]

In the past, Rees-Mogg has expressed concerns about “climate alarmism“, said humanity should adapt to, rather than mitigate, ‘climate change’, and warned that the drive to getting to net zero emissions is responsible for high energy prices.

After his appointment, Rees Mogg said his priority would be to provide help for people dealing with sharply higher energy bills and that the government will soon bring forward a package to help the public.

New Prime Minister Liz Truss has backed the legally binding target of reducing net zero ‘greenhouse gas’ emissions by the middle of this century, but has supported scrapping green levies and bringing back fracking if there is local support.

One contentious issue facing Rees-Mogg is providing a clear and settled policy environment for business after successive Conservative governments have produced energy and industrial strategies that were abandoned just a few years later.

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better to know...?

Greenpeace Cofounder Says Climate Change Based On False Narratives

by L. Yun-Jeong, Sep 9,  2022 in ClimateChangeDispatch

Patrick Moore [pictured], one of the founders of Greenpeace, said in an email obtained by The Epoch Times that his reasons for leaving Greenpeace were very clear: “Greenpeace was ‘hijacked’ by the political left when they realized there was money and power in the environmental movement.

[Left-leaning] political activists in North America and Europe changed Greenpeace from a science-based organization to a political fundraising organization,” Moore said. [bold, links added]

Moore left Greenpeace in 1986, 15 years after he co-founded the organization.

“The ‘environmental’ movement has become more of a political movement than an environmental movement,” he said. “They are primarily focused on creating narratives, stories, that are designed to instill fear and guilt into the public so the public will send them money.”

He said they mainly operate behind closed doors with other political operatives at the U.N., World Economic Forum, and so on, all of which are primarily political in nature.

The Intergovernmental Panel on Climate Change [IPCC] is “not a science organization,” he said. “It is a political organization composed of the World Meteorological Organization and the United Nations Environment Program.”

“The IPCC hires ‘scientists’ to provide them with ‘information’ that supports the ‘climate emergency’ narrative.”

Their campaigns against fossil fuels, nuclear energy, CO2, plastic, etc., are misguided and designed to make people think the world will come to an end unless we cripple our civilization and destroy our economy. They are now a negative influence on the future of both the environment and human civilization.”

“Today, the left has adopted many policies that would be very destructive to civilization as they are not technically achievable. Only look at the looming energy crisis in Europe and the UK, which Putin is taking advantage of. But it is of their own making in refusing to develop their own natural gas resources, opposing nuclear energy, and adopting an impossible position on fossil fuels in general,” Moore wrote.

The Left ‘Hijacked’ Greenpeace

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better to know...?, climate-debate

When German Environmentalists and Putin’s Government Had a Burning Love Affair

by D. Godefridi, Sept 8, 2022 in GatestoneInstitue

  • In 2011, the German Baltic Sea Nature Conservation Foundation was established as a result of an agreement between three of Germany’s leading environmental organizations – WWF, BUND and NABU – and the company Nord Stream, which is a subsidiary of the government of Vladimir Putin.
  • These environmental organizations were, moreover, at the same time fiercely opposed to German civil nuclear power, to the exploitation of shale gas in Europe and to the import of American gas via the construction of liquefied petroleum gas terminals in Germany.
  • Those were three issues where the views of the environmental organizations were totally congruent with those of the Russian Federation. This meant betting everything on “red” — as in a casino — but in this instance, on Russian gas.
  • Right after these contractual commitments by Nord Stream AG, the environmental organizations withdrew the lawsuit they had initiated against Nord Stream…
  • The German press reported last month that, inspired by the success of the first foundation, the same State of Mecklenberg-Western Pomerania was setting up a new foundation as recently as January 2021, the Mecklenberg-Western Pomerania Foundation for Climate and Environmental Protection, this time endowed with 192 million euros from the Russian government.
Those were… issues where the views of the environmental organizations were totally congruent with those of the Russian Federation. This meant betting everything on ‘red’ — as in a casino – but in this instance, on Russian gas. Pictured: The corporate headquarters of Gazprom Germania, the German unit of Russian natural gas company Gazprom, photographed on March 30, 2022 in Berlin, Germany. (Photo by Sean Gallup/Getty Images)
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better to know...?, climate and geology

Ultra-depleted hydrogen isotopes in hydrated glass record Late Cretaceous glaciation in Antarctica

by D.A. Nelson et al. , Sept 7, 2022 in NatureCommunications

Abstract

The Early Jurassic Butcher Ridge Igneous Complex (BRIC) in the Transantarctic Mountains contains abundant and variably hydrated silicic glass which has the potential to preserve a rich paleoclimate record. Here we present Fourier Transform Infrared Spectroscopic data that indicates BRIC glasses contain up to ~8 wt.% molecular water (H2Om), and low (<0.8 wt.%) hydroxyl (OH) component, interpreted as evidence for secondary hydration by meteoric water. BRIC glasses contain the most depleted hydrogen isotopes yet measured in terrestrial rocks, down to δD = −325 ‰. In situ 40Ar/39Ar geochronology of hydrated glasses with ultra-depleted δD values yield ages from 105 Ma to 72 Ma with a peak at c. 91.4 Ma. Combined, these data suggest hydration of BRIC glasses by polar glacial ice and melt water during the Late Cretaceous, contradicting paleoclimate reconstructions of this period that suggest Antarctica was ice-free and part of a global hot greenhouse.

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climate-debate

Pre-1970s ‘Global’ Sea Surface Temp Measurements Are No More Reliable Or Accurate Than Guessing

by K. Richard, Sept 8, 2022 in NoTricksZone

The accuracy of the long-term global instrumental temperature record – especially the data obtained before the 1970s – wholly rests on the assumption that sailors obtained precisely reliable temperature measurements as they pulled wooden or canvas buckets out of the water from ships at random depths, locations, and times of day. They didn’t.

It has long been known that pulling a bucket out of the water from a ship is rooted in serious error, rendering the sea surface temperature (SST) data obtained nearly useless. Ashford (1948) summarized some of the more salient reliability problems with this method of measurement.

• The initial temperature of the bucket is generally different from that of the sea.

• The water in the bucket may change its temperature before the reading is taken owing to the processes of heat exchange and evaporation.

• The initial temperature of the thermometer is generally different from that of the sample.

• The thermometer is liable to scale errors.

• Owing to thermal lag, the thermometer may take an appreciable time to indicate the true temperature of the sample.

• If the thermometer is removed from the bucket when taking the reading, it may no longer indicate the true water temperature.

• The temperature may be read incorrectly.

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better to know...?

Polar Opposite: Polar Bears Require Thin Ice Or Open Water To Survive

by K. Richard, Sept 5, 2022 in NoTricksZone

Abundant polar bear remains dating to 8000 to 9000 years ago have been found on Zhokhov Island, which is today surrounded by year-round sea ice (even in summer). This Arctic latitude (76°N) is too cold and thus too ice-covered for polar bears to inhabit today.

During the Early Holocene CO2 concentrations ranged between 255 to 265 ppm, and yet the Arctic was 5-7°C warmer than it is today and many regions that are now sea ice-covered were sea ice-free.

For example, Zhokhov Island is tundra and treeless today. It’s surrounded by permanent sea ice, making it inaccessible to wildlife.

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better to know...?, Cooling

A substantial stratospheric cooling event is now being observed over the Southern Hemisphere following a massive injection of water vapor

by A. Flis, Aug 29, 2022 in SevereWeatherEurope

Strong cold anomalies are being detected in the stratosphere over Southern Hemisphere. The anomalous cooling results from the water vapor coming from the January Hunga Tonga eruption. Cooling on this scale has not been seen in modern satellite records, so this is a significant event.

We will look at what is happening with temperatures in the southern stratosphere, how it all actually happened, and how it might impact our side of the planet in the upcoming Winter 2022/2023.

global-stratospheric-cooling-water-vapor-polar-vortex-winter-warming-event-ssw-pressure-temperature

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better to know...?, climate-debate

“The Weaponization of Science: Politics, Vilification, and the Climate Debate”

by W. Soon, April 11, 2022 in CeresScience

On April 11, 2022, CERES team-leader, Dr. Willie Soon’s gave a presentation in Washington D.C., “The Weaponization of Science: Politics, Vilification, and the Climate Debate”. The slides for the talk can be downloaded from https://tinyurl.com/49sbxhru.

 

Here are 7 short clips taken from the talk describing each of the main topics he covered. The clips are as follows:

  1. Is Dr. Willie Soon in the pay of the fossil fuel industry? (9:28 minutes)

  2. Why Greenpeace is looking for a piece of your green (6:10 minutes)

  3. Why “97% consensus on climate change” claims are wrong (3:29 minutes)

  4. Are the UN’s IPCC climate reports scientifically objective? (6:52 minutes)

  5. The “hockey stick” debate: Was there a Medieval Warm Period? (9:21 minutes)

  6. How much of a role does the Sun play in climate change? (3:33 minutes)

  7. Are “fact checks” checking facts or checking narratives? (2:47 minutes)

We think that these clips answer many of the commonly asked questions about both (1) the politicization of climate science and (2) the causes of climate change. Please feel free to subscribe to our new YouTube channel, share any of the above videos you think are interesting, or even share this post linking to all of them.

 

For convenience, we have embedded all 7 clips below:

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better to know...?

The Fall of ‘Nature’

by Bo Winegard, Aug 28, 2022 in Quilette

A once-respected journal has announced that it will be subordinating science to ideology.

And science, we should insist, better than any other discipline, can hold up to its students and followers an ideal of patient devotion to the search for objective truth, with vision unclouded by personal or political motive.
~Sir Henry Hallett Dale

Although the modern prestige bestowed upon science is laudable, it is not without peril. For as the ideological value of science increases, so too does the threat to its objectivity. Slogans and hashtags can quickly politicize science, and scientists can be tempted to subordinate the pursuit of the truth to moral or political ends as they become aware of their own prodigious social importance. Inconvenient data can be suppressed or hidden and inconvenient research can be quashed. This is especially true when one political tribe or faction enjoys disproportionate influence in academia—its members can disfigure science (often unconsciously) to support their own ideological preferences. This is how science becomes more like propaganda than empiricism, and academia becomes more like a partisan media organization than an impartial institution.

An editorial in Nature Human Behavior provides the most recent indication of just how bad things are becoming. It begins, like so many essays of its kind, by announcing that, “Although academic freedom is fundamental, it is not unbounded.” When the invocation of a fundamental freedom in one clause is immediately undermined in the next, we should be skeptical of whatever follows. But in this case, the authors are taking issue with a view very few people actually hold. At minimum, most academics will readily accept that scientific curiosity should be constrained by ethical concerns about research participants.

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unclassified

‘Hurricane Season Slowest Start In 30 Years’: Media Spin Begins

by A. Watts, Aug 29, 2022 in ClimateChangeDispatch

Back in May, many media outlets ran with this headline courtesy of a press release from NOAA:

NOAA predicts above-normal 2022 Atlantic Hurricane Season

Media outlets like Houston Public Media trumpeted it as if it was fact, saying: [bold, links added]

The National Oceanic and Atmospheric Administration (NOAA) released its 2022 Atlantic Hurricane Forecast, predicting an “above normal” hurricane season.

NOAA says there is a 70% chance of 14-21 storms forming, with as many as ten potentially becoming hurricanes. Three to six of these storms could become major hurricanes.

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climate-debate

Arctic-Wide Glaciers And Ice Caps Were Absent Or Smaller Than Today From 10,000 To 3000 Years Ago By Kenneth Richard on 29. August 2022

by K. Richard, Aug 29, 2022 in NoTricksZone

A new study details how a much warmer climate than today led to the disappearance of glaciers and ice caps during the sub-300 ppm CO2 Early to Middle Holocene. The Arctic’s modern ice extent is among the largest of the last 10,000 years.

Glaciologists Larocca and Axford (2022) have synthesized a comprehensive record of Arctic-wide glaciers and ice caps (GICs) situated near lakes for Greenland, Alaska, Arctic Canada, Iceland, Scandinavia, Svalbard, and the Russian Arctic.

They compared the current volume and extent of GICs to past Holocene periods when they were either 1) smaller than present or 2) absent, with the latter characterizations signifying greater Arctic warmth.

..;
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Contrary to the popular view that the modern glacier and ice cap extents are unprecedentedly small or on the verge of disappearing for the first time ever, the authors found more than half the Arctic’s GICs that exist today either did not exist or were smaller than today from 10,000 to 3400 years ago, when atmospheric CO2 ranged between 260 and 270 ppm.

Furthermore, most (“80% or more”) were smaller than today or absent from 7900 to 4500 years ago, which was the peak of this interglacial’s Arctic warmth – multiple degrees Celsius warmer than today.

The following images from the paper document the “Percent of GICs smaller or absent” for each region over the course of the last 10,000 years or more. Notice that between 80% to 100% of GICs were smaller than today or absent from about 8000 and 4000 years ago, and that even the Roman and Medieval Warm Periods had lower GICs extent than today.

The largest glacier and ice cap extent of the Holocene has been realized in the last millennium, suggesting any recession of GICs in the last few centuries is but a partial return to a former period of much greater warmth.

climate-debate

Northern Europe Mid Summer Hasn’t Warmed In 25 Years….Late Summer Arctic Ice Near 15-Year High!

by P. Gosselin, Aug 26, 2022 in NoTricksZone

This summer it’s been warm and awfully dry across mush of Europe. But in terms of global warming and the so-called Arctic tipping point, i.e. a point where the Arctic sea ice melts and theoretically sets off an unstoppable chain of catastrophic events – we look at the midsummer trends of Scandinavia and Finland, and then the Arctic.

As you’ll see, there’s been signs of an Arctic tipping point over the past 15 years.

The Japan Meteorological Agency (JMA) has the latest mean temperature data for July and today we plot the July data from Sweden and Finland for the stations for which the JMA has sufficient data.

We begin with Finland:

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climate-debate

Scientists: Only 10% Of The 1984-2017 Greenhouse Gas (Longwave) Forcing Was From CO2

by K. Richard, Aug 25, 2022 in NoTricksZone

A late 2021 study finds water vapor and temperature changes accounted for 90% of the changes in clear-sky downwelling longwave or greenhouse effect forcing since the mid-1980s. CO2 forcing assumed a mere bit-player role.

The seminal Feldman et al. (2015) study concluded it takes 10 years and a 22 ppm increase in CO2 to account for just one-tenth of the total longwave or greenhouse effect forcing in recent (2000-2010) climate change trends. The remaining longwave forcing contribution is from water vapor and clouds.

 

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climate-debate

Numbers — Tricky Tricky Numbers: Part 3

by Kip Hansen, Aug 25, 2022 in WUWT

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Bottom Lines:

1.  To support a claim that the Earth’s Climate System is “getting hotter” one has to have a long-term time series of measurements of heat in the climate system.

2.  Current Global Mean Temperature data sets do not measure heat and thus can not supply evidence for #1.

3.  The lack of such a time-series doesn’t mean that the Earth’s climate isn’t gaining energy (heat) – it simply means we don’t have any reliable measure of it.

4.  Climate Science may have some evidence of long-term energy gain or what is commonly labelled “Earth’s Energy Budget” — energy in/energy out — but it doesn’t seem to be dominate in the ongoing climate controversy.  The latest paper shows that we can still cannot directly measure instantaneous radiative forcing.  “This fundamental metric has not been directly observed globally and previous estimates have come from models.  In part, this is because current space-based instruments cannot distinguish the instantaneous radiative forcing from the climate’s radiative response.”  It is possible that future satellite missions will be able to measure directly and accurately Earth’s incoming and outgoing energy.

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climate-debate

Nothing Alarming: Europe Data Show No Upward Trend In Droughts And Forest Fires

by P. Gosselin, Aug 24, 2022 in NoTricksZone

German online NOVO-Argumente looks at the forest fire situation in Germany and Europe.

Currently parts of Europe are experiencing severe drought conditions and forest fires are raging in Germany. Climate activists and the mainstream are claiming it’s climate change, and it’s unprecedented.

But NOVO-Argumente looks at the historical data going back decades and finds nothing alarming.

Over the long-term average (1993 to 2019), 1035 forest fires in Germany were recorded with an average of 656 hectares affected. The amount of damage is just 1.38 million euros. Forest fires therefore cost us about as much per year as we spend every 30 minutes on subsidizing solar and wind energy.

“No evidence of an increase in forest fires”

As the following graph shows, there is no evidence of an increase in forest fires over the last 30 years in terms of number and extent. The peaks are not seen in this chart from the Federal Environmental Agency because they are in the past. In 1975, over 8000 hectares burned in Lower Saxony alone. In contrast, in the year 2021, which is not yet recorded in the graph, there were only 548 forest fires in the whole of Germany on a total area of 148 hectares.

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climate-debate

Welfare in the 21st century: Increasing development, reducing inequality, the impact of climate change, and the cost of climate policies

by B. Lomborg, July 2020 in TechForecSocChange

Abstract

Climate change is real and its impacts are mostly negative, but common portrayals of devastation are unfounded. Scenarios set out under the UN Climate Panel (IPCC) show human welfare will likely increase to 450% of today’s welfare over the 21st century. Climate damages will reduce this welfare increase to 434%.

Arguments for devastation typically claim that extreme weather (like droughts, floods, wildfires, and hurricanes) is already worsening because of climate change. This is mostly misleading and inconsistent with the IPCC literature. For instance, the IPCC finds no trend for global hurricane frequency and has low confidence in attribution of changes to human activity, while the US has not seen an increase in landfalling hurricanes since 1900. Global death risk from extreme weather has declined 99% over 100 years and global costs have declined 26% over the last 28 years.

Arguments for devastation typically ignore adaptation, which will reduce vulnerability dramatically. While climate research suggests that fewer but stronger future hurricanes will increase damages, this effect will be countered by richer and more resilient societies. Global cost of hurricanes will likely decline from 0.04% of GDP today to 0.02% in 2100.

Climate-economic research shows that the total cost from untreated climate change is negative but moderate, likely equivalent to a 3.6% reduction in total GDP.

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better to know...?

Climate Change Saves More Lives Than You’d Think

by Bjorn Lomborg, Sept16, 2021 in WSJ

Global warming does cause more heat deaths, but the editors’ statistic is deceptive. They say global heat deaths have gone up by 54% among old people in the past 20 years, but they fail to mention that the number of old people has risen by almost as much. Demographics drove most of the rise, not climate change.

They also leave out that climate change has saved more lives from temperature-related deaths than it has taken. Heat deaths make up about 1% of global fatalities a year—almost 600,000 deaths—but cold kills eight times as many people, totaling 4.5 million deaths annually. As temperatures have risen since 2000, heat deaths have increased 0.21%, while cold deaths have dropped 0.51%. Today about 116,000 more people die from heat each year, but 283,000 fewer die from cold. Global warming now prevents more than 166,000 temperature-related fatalities annually.

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better to know...?, energy and fields

U.S. Petroleum Reserves Hit Lowest Level In Decades Ahead Of Winter Months

by B. Ziesloft, Aug 19, 2022 in DailyWire

Strategic Petroleum Reserve levels have reached their lowest levels in four decades as autumn and winter weather conditions approach, according to data from the Energy Information Administration.

President Joe Biden has responded to rising gas prices by releasing one million barrels of oil per day from the Strategic Petroleum Reserves — a stock of emergency crude oil created to “reduce the impact of disruptions in supplies of petroleum products.” Though reserves in January 2021 were as high as 638 million barrels, reserves have fallen to 461 million barrels as of August 2022 — a level not seen since March.

The national average price of gasoline was $2.38 per gallon when President Joe Biden assumed office, according to the Energy Information Administration, and increased to $3.53 per gallon by the start of the Russian invasion of Ukraine. Prices surpassed $5.00 per gallon in early June before subsiding to $3.92 per gallon as of Friday, according to AAA.

Biden nixed an expansion of the Keystone XL Pipeline upon his entrance into office. Yet the commander-in-chief has repeatedly cast the actions of Russian President Vladimir Putin as the main factor behind soaring energy costs.

“Putin’s Price Hike hit hard in May here and around the world: high gas prices at the pump, energy, and food prices accounted for around half of the monthly price increases, and gas pump prices are up by $2 a gallon in many places since Russian troops began to threaten Ukraine,” Biden said in a June statement. “Even as we continue our work to defend freedom in Ukraine, we must do more — and quickly — to get prices down here in the United States.”

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better to know...?, climate-debate

1,200 Scientists, Scholars Declare: ‘There Is No Climate Emergency’

by F. Bergman, Aug 19, 2022 in Slay

A group of almost 1200 of the world’s leading scientists and scholars has signed a document to declare that “there is no climate emergency.”

The group, led by a Nobel Prize laureate, signed the declaration that states climate science is based more on personal beliefs and political agendas than rigorous scientific facts.

The World Climate Declaration warns that climate science “should be less political, while climate policies should be more scientific.”

“Scientists should openly address uncertainties and exaggerations in their predictions of global warming, while politicians should dispassionately count the real costs as well as the imagined benefits of their policy measures,” the declaration reads.

According to a report by WND, the declaration was organized by Climate Intelligence.

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climate-debate

DEBUNKED: Europe’s claimed ‘worst drought in 500 years’

by P. Homewood,  Aug 20, 2022  , in NotaLotofPeopleKnowThat

Roger Pielke Jr debunks Europe’s “Worst Drought in 500 Years Claim”:

 

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Conclusion

In Western and Central Europe — basically Atlantic France all the way to Moscow, north of the Mediterranean region and south of the North Sea region — the IPCC and the underlying peer reviewed research on which it assesses has concluded that drought has not increased and, logically, that increased drought cannot be attributed to human-caused climate change. The only exception here is that the IPCC has medium confidence in an increasing trend of soil moisture deficits in some subregions, however the IPCC has low confidence that this trend can be attributed to human-caused climate change. Looking to future, at temperature changes of 2C and more, at present the IPCC does not expect the current state of scientific understandings to change. But stay tuned — that’s why we do science.

The full post is here.

See also : DEBUNKED: Europe’s claimed ‘worst drought in 500 years’ – Peer-reviewed studies, data & IPCC reveal ‘drought has not increased’ & ‘cannot be attributed to human-caused climate change’

climate-debate

Is Global Warming The Greatest Scientific Fraud In History?

by G.K. Mitchell, Aug 19, 202 in ClimateChangeDispatch

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In its seminal report in 1990, the U.N. IPCC stated that “at the then current rate of world emissions of CO2, the global mean temperature would likely increase by 1°C by 2025.”

This statement formed the basis for the hypothesis that anthropogenic (man-made) global warmingresulted from the increased concentration of CO2 in the Earth’s lower atmosphere resulting from man-made activities.

Central to the hypothesis was that the temperature of the lower troposphere would increase as the concentration of CO2 in the troposphere increased.

Therefore, in its 1990 report, the U.N. IPCC established a direct linkage between the concentration of CO2 in the atmosphere and the temperature of the lower troposphere.

The scientific method of inquiry has guided scientific research and investigation for over 400 years. In summary, the scientific method requires that a researcher observe a phenomenon, postulate a hypothesis for the cause of the phenomenon, and then conduct experiments or scientific investigations to falsify the hypothesis.

In adherence to the scientific method, a climate scientist who thinks that man has caused global warming should develop a complex hypothesis as follows:

  1. Global warming has occurred; that is, the temperature of the world’s oceans, landmass, and relevant atmosphere has risen during the period under investigation by a statistically significant amount.

  2. Man’s activities are responsible for the global warming that has occurred.

  3. The extent to which global warming has occurred, or is reasonably projected to occur in the future, will adversely affect life on Earth.

If any of the conjectures in the complex hypothesis above are found to be invalid, the complex hypothesis is determined to be falsified and either discarded or modified.

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climate and geology

Successive climate crises in the deep past drove the early evolution and radiation of reptiles

by T. Simoes et al., Aug 19, 2022 in ScienceAdvance

Abstract

Climate change–induced mass extinctions provide unique opportunities to explore the impacts of global environmental disturbances on organismal evolution. However, their influence on terrestrial ecosystems remains poorly understood. Here, we provide a new time tree for the early evolution of reptiles and their closest relatives to reconstruct how the Permian-Triassic climatic crises shaped their long-term evolutionary trajectory. By combining rates of phenotypic evolution, mode of selection, body size, and global temperature data, we reveal an intimate association between reptile evolutionary dynamics and climate change in the deep past. We show that the origin and phenotypic radiation of reptiles was not solely driven by ecological opportunity following the end-Permian extinction as previously thought but also the result of multiple adaptive responses to climatic shifts spanning 57 million years.
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better to know...?, Cooling

New Studies Claim The More CO2 In The Venus Atmosphere The Colder It Gets

by K. Richard, Aug 19, 2022 in NoTricksZone

Early Venus is suggested to have been much colder – and thus habitable – due to higher concentrations of CO2…because CO2 drives cooling in most of the Venus atmosphere (stratosphere, mesosphere, thermosphere).

Scientists have for decades agreed it is “well recognized” that CO2 molecules radiatively cool the atmospheres of planets like Earth, Mars, and Venus (Sharma and Wintersteiner, 1990) in the 15 μm band starting from 12 km above the surface on up.

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only geology

Continental configuration controls ocean oxygenation during the Phanerozoic

by Pohl A. et al. , Aug 17, 2022 in Nature

Abstract

The early evolutionary and much of the extinction history of marine animals is thought to be driven by changes in dissolved oxygen concentrations ([O2]) in the ocean1,2,3. In turn, [O2] is widely assumed to be dominated by the geological history of atmospheric oxygen (pO2)4,5. Here, by contrast, we show by means of a series of Earth system model experiments how continental rearrangement during the Phanerozoic Eon drives profound variations in ocean oxygenation and induces a fundamental decoupling in time between upper-ocean and benthic [O2]. We further identify the presence of state transitions in the global ocean circulation, which lead to extensive deep-ocean anoxia developing in the early Phanerozoic even under modern pO2. Our finding that ocean oxygenation oscillates over stable thousand-year (kyr) periods also provides a causal mechanism that might explain elevated rates of metazoan radiation and extinction during the early Palaeozoic Era6. The absence, in our modelling, of any simple correlation between global climate and ocean ventilation, and the occurrence of profound variations in ocean oxygenation independent of atmospheric pO2, presents a challenge to the interpretation of marine redox proxies, but also points to a hitherto unrecognized role for continental configuration in the evolution of the biosphere.

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La géologie, une science plus que passionnante … et diverse