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For the first time since humans have been monitoring, atmospheric concentrations of carbon dioxide have exceeded 410 parts per million averaged across an entire month, a threshold that pushes the planet ever closer to warming beyond levels that scientists and the international community have deemed ‘‘safe.’’
The reading from the Mauna Loa Observatory in Hawaii finds that concentrations of the climate-warming gas averaged above 410 parts per million throughout April. The first time readings crossed 410 at all occurred on April 18, 2017, or just about a year ago.
Earth’s atmosphere just crossed another troubling climate change threshold
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Concentration of Atmospheric Carbon Dioxide Continues to Increase
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It's not reality that's important, but how you perceive things.
(Score: 0) by Anonymous Coward on Sunday May 13 2018, @12:04AM (1 child)
"...when the winds do sometimes blow from active vents towards the observatory, the influence from the volcano is obvious on the normally consistent records and any dubious readings can be easily spotted and edited out..." https://www.skepticalscience.com/mauna-loa-volcano-co2-measurements-intermediate.htm [skepticalscience.com]
(Score: 0) by Anonymous Coward on Sunday May 13 2018, @12:11AM
I read that, it makes no sense. If there were a relatively constant stream of CO2 leaking out leading to higher than normal levels at that location, that method would never be able to detect it. It can only detect deviations from the norm...
This is why I asked above about how they determined absolute levels of CO2, perhaps there will be a hint there.