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> 2016 saw average concentrations of CO2 hit 403.3 parts per million, up from 400ppm in 2015... "The largest increase was in the previous El Niño, in 1997-1998
by Cacti 9y ago
> 2016 saw average concentrations of CO2 hit 403.3 parts per million, up from 400ppm in 2015... "The largest increase was in the previous El Niño, in 1997-1998 and it was 2.7ppm and now it is 3.3ppm, it is also 50% higher than the average of the last ten years."
It sounds a lot less alarmist when you put it this way. We're talking like 0.6 part per million. If you look at the graph in the article, it's basically in-line with the past 60 years.
- pizza 9y agoYeah, 0.6 ppm may sound like a very small amount, but I thought the problem is that the effect over time / harm as a function of concentration levels is convex; i.e. +0.6ppm today means a huge difference 10 years from now.
- cryptoz 9y ago> We're talking like 0.6 part per million You dismiss this increase as if the small percentage of the total atmosphere that CO2 makes up is a relevant statistic. It's not - you're using big numbers not related to make it sound like the situation is smaller than it is. Are you expecting it to get to 1 part per thousand, or something? That's not the risk area - the risk area is here, at ~400ppm. > If you look at the graph in the article, it's basically in-line with the past 60 years. Actually it looks like a steep increase to me from the last 60 years. Also, these are numbers we'd like to be doing down, not increasing even faster. The situation is dire.
- deleted 9y ago[deleted]
- guelo 9y agoHere's my attempt at visually extrapolating from that graph. If it's a new trend it looks like a very significant change to me. https://imgur.com/fys3MqG https://imgur.com/fys3MqG