New federal research suggests greenhouse gas emissions from Alberta's oilsands may be significantly higher than industry reports. But the emissions intensity of Canadian Natural Resources Ltd.'s Horizon and Jackpine mines averaged 37 per cent higher than they reported. The new study is the first to use actual field measurements taken from aerial overflights, or top-down measurements. "But I will say there are many, many studies using top-down approaches which have also shown that top-down (measurements) are generally higher.'' He said his team is currently analyzing data from similar overflights conducted to measure oilsands emissions in two different seasons.

Source: Huffington Post April 23, 2019 11:15 UTC