Insight and inspiration in turbulent times.
Jerry Brown, California’s governor, signed into law the Buy Clean California Act. The act requires that the state set a maximum “acceptable lifecycle global warming potential” for different building materials, specifying that only materials with embodied emissions below that level can be purchased by the state.
Modeling the future of our climate is a complex task that not too many people understand. What do we know about how the Intergovernmental Panel on Climate Change (or IPCC) modeling actually works? Why has the modeling community decided to model emissions separately from socioeconomic scenarios?
Abandoned offshore oil and gas wells in the North Sea may be a source of significant methane emissions finds a new study, which claims to be the first to measure the amount of methane leaking from offshore wells. According to the study published recently in the journal Environmental Science and Technology, about one third of the region’s wells could be releasing between 3 and 17 thousand tonnes of methane into the North Sea each year. “
In a recent post I extolled public transit as a way to cut personal fuel use, emissions and expenses, for those few Americans who can use it. But I had to think hard about that view after reading two well reasoned rebuttals, from Paul in Madison, Wisconsin, and Vince in Austin, Texas.
What does this downgrading of likely carbon emissions mean for climate change modelers, climate activists, policy makers, and concerned citizens? According to Ritchie, the implication is clearly not as simple as “don’t worry, fossil fuel depletion will solve climate change for us.”
Here’s what the Trudeau government definitely knows about the science of methane. The gas accounts for more than one-quarter of all global warming, and reliable data from satellite and airplane surveys show that emissions are increasing, largely from the oil and gas industry.
Households in the south-west of England are some of the most carbon intensive in Europe, a new study shows. The paper, published this month in the journal Environmental Research Letters, is the first to break down the embodied greenhouse gas emissions from household consumption across the EU.
In addition to being a much more powerful contributor to climate instability than carbon dioxide, methane leakage can contaminate groundwater, kill vegetation, create air pollution and waste valuable economic resources.
The Paris Agreement on climate change is designed to weather the peaks and troughs of political commitment, over time and from country to country, while ensuring that ambition ratchets inexorably upwards over time.
With atmospheric levels of CO2 recently jumping at a rate of 3ppm per year, CO2e levels could soon be increasing at 4-5ppm per year. A level of 550 ppm CO2e, consistent with a 3 degree centigrade rise in temperatures, would then be reached in the early 2030’s.
In late 2015, the world agreed to limit the global temperature rise to “well below 2C”. Ever since the signing of the Paris Agreement on climate change, scientists, think tanks and policymakers have been scrambling to define exactly what meeting this temperature limit will mean in policy and investment terms.
Replacing traditional wood and coal-burning cookstoves with cleaner technology could trim nearly a tenth of a degree from global temperature and save more than 10 million lives by 2050.
