Tag Archives: methane

How did the pandemic impact CO2 and CH4?

The NOAA Research News article Despite pandemic shutdowns, carbon dioxide and methane surged in 2020 (4/7/2021) notes

The economic recession was estimated to have reduced carbon emissions by about 7 percent during 2020. Without the economic slowdown, the 2020 increase would have been the highest on record, according to Pieter Tans, senior scientist at NOAA’s Global Monitoring Laboratory. Since 2000, the global CO2 average has grown by 43.5 ppm, an increase of 12 percent.

And methane:

Analysis of samples from 2020 also showed a significant jump in the atmospheric burden of methane, which is far less abundant but 28 times more potent than CO2at trapping heat over a 100-year time frame. NOAA’s preliminary analysis showed the annual increase in atmospheric methane for 2020 was 14.7 parts per billion (ppb), which is the largest annual increase recorded since systematic measurements began in 1983.

There are two other graphs in the article and an abundance of quantitative information for a QL course.

Methane Bubbles – A Feedback Loop

The Siberian Times brings us this article: 7,000 underground gas bubbles poised to ‘explode’ in Arctic

Their appearance at such high latitudes is most likely linked to thawing permafrost which in is in turn linked to overall rise of temperature on the north of Eurasia during last several decades,’ said a spokesman.

The summer was abnormally hot for the Yamal peninsula, with the air temperature reaching 35C.

This heat impacted on the depth of seasonal thawing which grew both deeper  spread wider than in the past, so causing the formation of new lakes and a noticeable change in the regional tundra landscape.

Scientists are simultaneously observing the sudden formation of the large craters, evidently caused by eruptions or explosions of methane gas which has melted below the surface.

This is another situation where warming permafrost is related to the release of the greenhouse gas methane, which then adds to warming. In other words, a positive feedback loop. There are some excellent photos in the article.