WeB次元官网网址檝e long known extracting oil and gas comes with negative consequences, and rapid expansion of hydraulic fracturing, or fracking, increases the problems and adds new ones B次元官网网址� excessive water use and contamination, earthquakes, destruction of habitat and agricultural lands and methane emissions among them.
As fossil fuel reserves become depleted thanks to our voracious and wasteful habits, extraction becomes more extreme and difficult. Oilsands mining, deepsea drilling and fracking are employed because easily accessible supplies are becoming increasingly scarce. The costs and consequences are even higher than with conventional sources and methods.
Fracking involves drilling deep into the earth, and injecting a high-pressure stream of water, sand and chemicals to break apart shale and release gas or oil. In British Columbia, politicians tout liquefied natural gas as an economic panacea, a product we can export around the world to create jobs and prosperity at home. More than 80 per cent of B.C.B次元官网网址檚 natural gas is fracked, and as fracking increases, the percentage rises.
Of the many problems with the industry, methane emissions from fracked and conventional operations are among the most serious. Methane is at least 84 times more potent than carbon dioxide as a heat-trapping gas over the short term. Researchers estimate itB次元官网网址檚 responsible for 25 per cent of already observed climatic changes. One difference between methane and CO2: Methane remains in the atmosphere for a shorter time B次元官网网址� around a decade, compared to many decades or centuries for CO2.
MethaneB次元官网网址檚 relatively short lifespan means reducing the amount entering the atmosphere will have major and rapid results. Cutting methane emissions from the oil and gas sector is one of the cheapest, most effective ways to address climate change. The technology to do so already exists. ItB次元官网网址檚 absurd that the industry is leaking the very resource it wants to sell.
Methane comes from a number of sources, including animal agriculture and natural emissions. Global warming itself means methane once trapped in frozen ground or ice is escaping into the air.
The oil and gas industry is one of the major emitters. A field study by the David Suzuki Foundation and St. Francis Xavier University found methane pollution from B.C.B次元官网网址檚 oil and gas industry is at least 2.5 times higher than B.C. government estimates.
In 2015 and 2016, Foundation researchers joined St. Francis Xavier UniversityB次元官网网址檚 Flux Lab under the supervision of David Risk, an expert in measurement, detection and repair of fugitive emissions. Using gas-detection instruments mounted on a B次元官网网址渟niffer truck,B次元官网网址� they travelled more than 8,000 kilometres in northeastern B.C. They found methane emissions from B.C.B次元官网网址檚 Montney region alone are greater than what the provincial government has estimated for the entire industry!
The research, available in the journal Atmospheric Chemistry and Physics, found Montney operations leak and intentionally release more than 111,800 tonnes of methane into the air annually B次元官网网址� equivalent to burning more than 4.5 million tonnes of coal or putting more than two million cars on the road.
This research shows that the oil and gas sector is the largest source of climate pollution in B.C., surpassing commercial transportation B次元官网网址� and it contradicts claims that natural gas or LNG is a clean fuel or that itB次元官网网址檚 useful to help us transition from other fossil fuels.
Given these results and other studies ,itB次元官网网址檚 time for all levels of government to get industrial methane emissions under control.
Beyond existing commitments to reduce methane emissions by 45 per cent, governments must work to eliminate them from this sector by 2030, with strong regulations, monitoring and oversight.
We need better leak detection and repair, improved reporting and enforcement, and methods to capture emissions rather than burning them.
Climate change is a serious issue, and methane emissions are a significant contributor. Getting them under control is a quick, cost-effective way to help address the problem. WhatB次元官网网址檚 stopping us?
David Suzuki is a scientist, broadcaster, author and co-founder of the David Suzuki Foundation. Written with contributions from David Suzuki Foundation senior editor Ian Hanington.
