Context is everything in understanding the U.S.-China climate deal struck in Beijing by U.S. President Barack Obama and Chinese President Xi Jinping last week. The deal’s ambitions may fall short of what climate scientists called for in the latest entreaty from the Intergovernmental Panel on Climate Change, but its realpolitik is important.
Obama and Xi’s accord sets a new target for reductions in U.S. greenhouse gas emissions: 26-28 percent below 2005 levels by 2025. And for the first time sets a deadline for China’s rising GHGs to peak: 2030. This is potentially strong medicine for cooperation, when seen in the context of recent disappointments for global climate policy. Continue reading →
European leaders wrapped up a two-day climate summit in Brussels last week with a deal to cut the European Union’s total greenhouse gas emissions to 40 percent below 1990 levels. This would continue a downward trend – the EU is already on track to meet a 20 percent reduction from 1990 levels by 2020 – but the agreement is weak relative to Europe’s prior ambitions to confront climate change.
Investors in green tech pushed aggressively for the deal, seeking a longterm signal that the European market will continue to reward advances in energy efficiency and low-carbon energy production. The deal is also a shot in the arm for the Paris global climate talks, scheduled for December 2015, which will seek to achieve the decisive binding global targets for greenhouse gas reductions that failed to emerge from the 2009 Cophenhagen climate talks.
What the deal lacks is specificity and ambition regarding the mechanisms by which European countries are to achieve the carbon reduction. “Key aspects of the deal that will form a bargaining position for global climate talks in Paris next year were left vague or voluntary,” reported The Guardian. Continue reading →
The IPCC recently stated that failure to deploy technology to capture carbon emissions from coal would double the cost of stopping climate change. Two coal-fired power plants nearing completion in Saskatchewan and Mississippi will be the first in the world to actually prove the technology, capturing their CO2 emissions and store that bolus of greenhouse gases underground.
You can read about how they will do it in my latest piece for Technology Review. One point dropped from that story bears stressing. Part of what makes the extra cost of carbon capture feasible for these plants is that they have buyers for their CO2: oilfield operators who will use the stuff as a solvent to loosen up petroleum stuck in aging oil wells. That means the CO2 may not be permanently trapped underground warns Sarah Forbes, a carbon capture expert at the Washington-based World Resources Institute.
In Canada, however, expectations are higher according to Robert Watson, CEO of SaskPower, the utility completing the coal-fired power plant in Saskatchewan. Watson told me that the oilfield operator taking his plant’s CO2 must ensure that any CO2 that comes back to the surface with produced oil is recycled back underground: “They’re going to have to assure the government that they can account for all of the CO2 they use all of the time.”
In this month’s issue of IEEE Spectrum we spotlight the methane emissions overlooked by the U.S. EPA’s greenhouse gas inventory, and the satellite-based detector launching next year to map this “missing methane.” Last week the White House acknowledged EPA’s missing methane problem, and laid out a strategy to combat it. While promising to improve EPA’s inventory, including more use of top-down methane measurement, the White House also promised federal investment in ground-based methane sensing to plug leaky natural gas systems thought to be the source of much of the missing methane.
Action can’t come soon enough according to the Intergovernmental Panel on Climate Change (IPCC), which on Monday unveiled its latest report onClimate Change Impacts, Adaptation, and Vulnerability. The IPCC said “widespread and consequential” impacts are already visible and world leaders have only a few years to change course to avoid catastrophic warning. Methane is a major contributor according to the scientific body’s update on the physical basis for climate change, released last fall, which deemed methane to be up to 44 percent more potent as a warming agent than previously recognized. Continue reading →
The intensifying methane emissions debate has profound implications for climate and energy policy. Natural gas consumption is rising, and methane’s global warming impact is more than 30 times as much as that of carbon dioxide, molecule for molecule, and second only to carbon dioxide’s in today’s net climate impact …
The Arctic is melting faster than predicted. Is now the time to shut down the low-carbon nuclear power plants in France — the 20th Century’s staunchest proponent of nuclear energy? Is natural gas produced via hydraulic fracturing or ‘fracking’ a gift that is buying time for a transition to renewable energy or a curse that reinforces fossil fuel dependence? Will carbon belching heavyweights such as the U.S. and China ever get serious about cleaning up their energy systems?
Such questions are top order in France, whose President kicked off a Grand Débat on energy this month Continue reading →
Natural gas has no odor, but you can smell a leak thanks to the addition of an odorific mercaptam compound. Do carbon dioxide and other similarly odorless greenhouse gases (GHGs) require some analogous device to make their presence known and thus prompt evasive action? Yes, and for these ubiquitous gases, it will be a visual cue indicating the source and quantity of GHGs Continue reading →