Carbon dioxide, methane levels in the atmosphere hit ‘record highs’ last year – but only since 1959!
We’ll ignore any climate-related assertions in this article and try to look at actual information. How much of the variation of the trace gases mentioned would have occurred anyway, regardless of human activities? As the article says: ‘Carbon dioxide and methane levels have been higher in the far ancient past’. The world obviously didn’t self-destruct back then, so maybe a bit of context there for these latest ‘records’. It’s also known that warmer oceans absorb less carbon dioxide from the atmosphere – an entirely natural process.
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The 2.8 parts per million increase in carbon dioxide airborne levels from January 2023 to December, wasn’t as high as the jumps were in 2014 and 2015, but they were larger than every other year since 1959, when precise records started, says PBS Online.
Carbon dioxide’s average level for 2023 was 419.3 parts per million, up 50% from pre-industrial times.
Last year’s methane’s jump of 11.1 parts per billion was lower than record annual rises from 2020 to 2022. It averaged 1922.6 parts per billion last year.
It has risen 3% in just the past five years and jumped 160% from pre-industrial levels showing faster rates of increase than carbon dioxide, said Xin “Lindsay” Lan, the University of Colorado and NOAA atmospheric scientist who did the calculations.
. . .
Methane emissions in the atmosphere come from natural wetlands, agriculture, livestock, landfills and leaks and intentional flaring of natural gas in the oil and gas industry.
. . .
Carbon dioxide and methane levels have been higher in the far ancient past, but it was before humans existed. [Talkshop comment – hint for alarmists there?]
. . .
The shift last year from a three-year La Nina, the natural cooling of parts of the central Pacific that changes weather worldwide, to a warm El Nino, played a role in dampening methane’s increasing rate in the air and spiking carbon dioxide levels, Lan said.
That’s because methane’s biggest emissions comes from wetlands, which during a La Nina is wetter in much of the tropics, creating more microbes in the lush growth to release methane, Lan said. The La Nina ended mid year last year, giving way to a strong El Nino.
Carbon dioxide levels in the atmosphere tend to rise higher during hotter El Ninos, but the current one is starting to peter out, Lan said.
Full article here.
Source: https://tallbloke.wordpress.com/2024/04/08/carbon-dioxide-methane-levels-in-the-atmosphere-hit-record-highs-last-year-but-only-since-1959/
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