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CMIP6: Not-so-sudden stratospheric cooling

Real Climate

So SSU me Like MSU trends, these records reflected a weighted average of atmospheric temperatures, and the three SSU channels progressively weight higher levels in the stratosphere, roughly centered on 30km, 40km and 45km above the surface but with quite a bit of overlap. 692-697, 2012. Thompson et al. link] D.W.J. Thompson, D.J.

Cooling 291
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AR6 of the best

Real Climate

Extremes : Back in 2012, the literature assessed by AR5 connecting changes in extremes to climate change was scant. As one example, the rate of warming over the past 15 years (1998–2012; 0.05 [–0.05 to 0.15] °C per decade), which begins with a strong El Niño, is smaller than the rate calculated since 1951 (1951–2012; 0.12 [0.08

Sea Level 361
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The summary for policymakers of the Intergovernmental Panel on Climate Change sixth assessment reports synthesis

Real Climate

Nevertheless, the summary for policymakers states the need for “rapid and deep and, in most cases, immediate greenhouse gas emissions reductions in all sectors this decade” if we want global warming to keep below 1.5°C Humans work hard to add greenhouse gases such as CO 2 into the atmosphere.

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Something Stinks: California Must End Manure Biomethane Accounting Gimmicks in its Low Carbon Fuel Standard

Union of Concerned Scientists

Under the LCFS each fuel pathway gets a unique carbon intensity (CI) based on a lifecycle analysis of the greenhouse gas emissions associated with the production and use of the fuel. Unfortunately, this is far from the truth. And because methane is such a potent heat trapping gas, credit for avoided methane emissions can be quite large.

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Alaska’s Atmospheric Public Trust: A Right Without a Remedy?

Vermont Law

The Alaska Supreme Court suggested Alaskans might have a right to atmosphere, but declined to provide a remedy. Atmospheric public trust plaintiffs are running out of options. The Alaska Supreme Court denies relief, but signals that Alaskans may have a public trust right to preservation of the atmosphere. By Adam Patrick Murray.

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Tackling Agricultural Methane: Monitoring and Policy Strategies

Legal Planet

In a previous blog post , I briefly reviewed some of the innovative strategies to reduce methane emissions from agricultural livestock and rice operations, which have the potential to combat a significant source of global greenhouse gas emissions.

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Analysis: Moving the dial on ocean-based CO2 removal

A Greener Life

It’s now widely acknowledged that to avoid catastrophic climate change we’ll need to physically remove CO2 from the atmosphere. By mid-century onwards, as much as 1 billion tonnes of carbon will need to be removed from the atmosphere each year. But ocean-based interventions have also been contentious.

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