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New paper shows clouds are more important than CO2

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From Clintel.org

By Vijay Jayaraj

Underestimating Clouds: A Climate Mistake We Cannot Afford

A new paper by physicists W. A. van Wijngaarden and William Happer, Radiation Transport in Clouds, suggests that clouds affect atmospheric temperature more than CO2, says Vijay Jayaray of the CO2 Coalition.

Carbon dioxide (CO₂) has been predominantly portrayed as the chief culprit driving global warming. For decades, this misconception has guided international policies, prompted ambitious targets for reducing CO2 emissions and driven a shift from reliable and affordable energy resources like coal, oil, and natural gas toward problematic wind and solar sources.

However, this theory overlooks important factors that influence Earth’s climate system, including a critical variable in the climate system – the role of clouds, which remains woefully underestimated.

Recent work by physicists W. A. van Wijngaarden and William Happer challenges this prevailing paradigm: Their new paper, Radiation Transport in Clouds, suggest clouds affect atmospheric temperature more than CO2 because they have a greater impact on the comparative amounts of solar energy entering Earth’s atmosphere and escaping to outer space.

The Overshadowed Influence of Clouds

Clouds simultaneously reflect incoming sunlight back to space (cooling the Earth) and trap outgoing heat (warming the Earth). This dual nature makes clouds both powerful and perplexing players in our climate system. The net effect of clouds on climate is a balance between these opposing influences, thus a central component of the Earth’s energy budget.

A recent study by van Wijngaarden and Happer, titled “Radiation Transport in Clouds,” delves into this complexity. The 2025 paper says the radiation effects of clouds can easily negate or amplify the impact of CO2. The researchers highlight that clouds have a more pronounced effect on Earth’s radiation budget than greenhouse gases like CO₂.

For instance, their research reveals that a modest decrease in low cloud cover could significantly increase solar heating of the Earth’s surface. In comparison, a doubling of atmospheric CO2 concentrations reduces radiation to space by a mere 1%: “Instantaneously doubling CO₂ concentrations, a 100% increase, only decreases radiation to space by about 1%. To increase solar heating of the Earth by a few percent, low cloud cover only needs to decrease by a few percent.”

This stark contrast highlights the disproportionate influence of cloud dynamics compared to CO2 fluctuations. Most state-of-art climate models are still in their infancy. We need more accurate measurements of clouds’ properties and their influence on the electromagnetic components of solar radiation if they are to be useful inputs for climate models.

Implications for Energy Policy and Reliability

Current strategies assume a direct and dominant link between CO2 emissions and global temperatures to justify aggressive “decarbonization” efforts and an increase in the use of solar and wind energy.

However, solar and wind are inherently intermittent, rendering them unreliable and very expensive as components of a power grid. The infrastructure required to support these technologies entails substantial upfront investments, higher operating costs and increasing utility bills for consumers.

Blackouts, energy shortages and price spikes are becoming increasingly common in regions that have prematurely decommissioned fossil fuel plants without adequate backup solutions. This trend disproportionately affects vulnerable populations, exacerbating energy poverty and hindering economic development.

The major justification for using solar and wind has been that they counter global warming by reducing CO2 emissions from burning fossil fuels. If small variations in cloud cover actually overwhelm the effects of CO2, then the climate’s sensitivity to greenhouse gases is being significantly overestimated. This has profound implications for policy.

Attributing global warming predominantly to CO₂ emissions from the use of fossil fuels is a gross oversimplification. While CO2 undoubtedly has a warming effect, it is relatively modest and beneficial, mainly moderating the difference between daytime and nighttime temperatures. On the other hand, clouds, with their multifaceted interactions and feedbacks, represent a critical and underappreciated component of this puzzle.

The findings of van Wijngaarden and Happer highlight a broader issue within climate science: the tendency to oversimplify complex systems for the sake of political expediency. As the global energy landscape continues to evolve, it is imperative that decisions be based on sound science rather than political dogma.

The time has come to reassess our approach to both climate science and energy policy. The stakes are too high to continue down a path of destructive policies based on erroneous analyses. We must prioritize reliable, affordable energy sources and grid stability over useless reductions in emissions of a harmless gas.

Click here to access the entire Radiation Transport in Clouds paper.

This commentary was first published at BizPac Review on February 10, 2025

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Alberta

Alberta Premier Danielle Smith Discusses Moving Energy Forward at the Global Energy Show in Calgary

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From Energy Now

At the energy conference in Calgary, Alberta Premier Danielle Smith pressed the case for building infrastructure to move provincial products to international markets, via a transportation and energy corridor to British Columbia.

“The anchor tenant for this corridor must be a 42-inch pipeline, moving one million incremental barrels of oil to those global markets. And we can’t stop there,” she told the audience.

The premier reiterated her support for new pipelines north to Grays Bay in Nunavut, east to Churchill, Man., and potentially a new version of Energy East.

The discussion comes as Prime Minister Mark Carney and his government are assembling a list of major projects of national interest to fast-track for approval.

Carney has also pledged to establish a major project review office that would issue decisions within two years, instead of five.

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Alberta

Punishing Alberta Oil Production: The Divisive Effect of Policies For Carney’s “Decarbonized Oil”

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From Energy Now

By Ron Wallace

The federal government has doubled down on its commitment to “responsibly produced oil and gas”. These terms are apparently carefully crafted to maintain federal policies for Net Zero. These policies include a Canadian emissions cap, tanker bans and a clean electricity mandate.

Following meetings in Saskatoon in early June between Prime Minister Mark Carney and Canadian provincial and territorial leaders, the federal government expressed renewed interest in the completion of new oil pipelines to reduce reliance on oil exports to the USA while providing better access to foreign markets.  However Carney, while suggesting that there is “real potential” for such projects nonetheless qualified that support as being limited to projects that would “decarbonize” Canadian oil, apparently those that would employ carbon capture technologies.  While the meeting did not result in a final list of potential projects, Alberta Premier Danielle Smith said that this approach would constitute a “grand bargain” whereby new pipelines to increase oil exports could help fund decarbonization efforts. But is that true and what are the implications for the Albertan and Canadian economies?


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The federal government has doubled down on its commitment to “responsibly produced oil and gas”. These terms are apparently carefully crafted to maintain federal policies for Net Zero. These policies include a Canadian emissions cap, tanker bans and a clean electricity mandate. Many would consider that Canadians, especially Albertans, should be wary of these largely undefined announcements in which Ottawa proposes solely to determine projects that are “in the national interest.”

The federal government has tabled legislation designed to address these challenges with Bill C-5: An Act to enact the Free Trade and Labour Mobility Act and the Building Canada Act (the One Canadian Economy Act).  Rather than replacing controversial, and challenged, legislation like the Impact Assessment Act, the Carney government proposes to add more legislation designed to accelerate and streamline regulatory approvals for energy and infrastructure projects. However, only those projects that Ottawa designates as being in the national interest would be approved. While clearer, shorter regulatory timelines and the restoration of the Major Projects Office are also proposed, Bill C-5 is to be superimposed over a crippling regulatory base.

It remains to be seen if this attempt will restore a much-diminished Canadian Can-Do spirit for economic development by encouraging much-needed, indeed essential interprovincial teamwork across shared jurisdictions.  While the Act’s proposed single approval process could provide for expedited review timelines, a complex web of regulatory processes will remain in place requiring much enhanced interagency and interprovincial coordination. Given Canada’s much-diminished record for regulatory and policy clarity will this legislation be enough to persuade the corporate and international capital community to consider Canada as a prime investment destination?

As with all complex matters the devil always lurks in the details. Notably, these federal initiatives arrive at a time when the Carney government is facing ever-more pressing geopolitical, energy security and economic concerns.  The Organization for Economic Co-operation and Development predicts that Canada’s economy will grow by a dismal one per cent in 2025 and 1.1 per cent in 2026 – this at a time when the global economy is predicted to grow by 2.9 per cent.

It should come as no surprise that Carney’s recent musing about the “real potential” for decarbonized oil pipelines have sparked debate. The undefined term “decarbonized”, is clearly aimed directly at western Canadian oil production as part of Ottawa’s broader strategy to achieve national emissions commitments using costly carbon capture and storage (CCS) projects whose economic viability at scale has been questioned. What might this mean for western Canadian oil producers?

The Alberta Oil sands presently account for about 58% of Canada’s total oil output. Data from December 2023 show Alberta producing a record 4.53 million barrels per day (MMb/d) as major oil export pipelines including Trans Mountain, Keystone and the Enbridge Mainline operate at high levels of capacity.  Meanwhile, in 2023 eastern Canada imported on average about 490,000 barrels of crude oil per day (bpd) at a cost estimated at CAD $19.5 billion.  These seaborne shipments to major refineries (like New Brunswick’s Irving Refinery in Saint John) rely on imported oil by tanker with crude oil deliveries to New Brunswick averaging around 263,000 barrels per day.  In 2023 the estimated total cost to Canada for imported crude oil was $19.5 billion with oil imports arriving from the United States (72.4%), Nigeria (12.9%), and Saudi Arabia (10.7%).  Since 1988, marine terminals along the St. Lawrence have seen imports of foreign oil valued at more than $228 billion while the Irving Oil refinery imported $136 billion from 1988 to 2020.

What are the policy and cost implication of Carney’s call for the “decarbonization” of western Canadian produced, oil?  It implies that western Canadian “decarbonized” oil would have to be produced and transported to competitive world markets under a material regulatory and financial burden.  Meanwhile, eastern Canadian refiners would be allowed to import oil from the USA and offshore jurisdictions free from any comparable regulatory burdens. This policy would penalize, and makes less competitive, Canadian producers while rewarding offshore sources. A federal regulatory requirement to decarbonize western Canadian crude oil production without imposing similar restrictions on imported oil would render the One Canadian Economy Act moot and create two market realities in Canada – one that favours imports and that discourages, or at very least threatens the competitiveness of, Canadian oil export production.


Ron Wallace is a former Member of the National Energy Board.

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