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.”
Unfortunately we get retarded drivel such as currently on the peakoil front page about some "weaker warming than expected" junk science and never any recognition of such terminal details.
rockdoc123 wrote:Unfortunately we get retarded drivel such as currently on the peakoil front page about some "weaker warming than expected" junk science and never any recognition of such terminal details.
Oh and that would be the peer reviewed paper published in Journal of Climate with Judith Curry as co-author? The same Curry who has published several hundred papers and won a number of awards for her research in various climate topics? Hardly "retarded drivel" or "junk science".
Perhaps you should actually read the paper.
Greenhouse gas concentrations surge to new record
Concentrations of carbon dioxide in the atmosphere surged at a record-breaking speed in 2016 to the highest level in 800 000 years, according to the World Meteorological Organization's Greenhouse Gas Bulletin. The abrupt changes in the atmosphere witnessed in the past 70 years are without precedent
The last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago, the temperature was 2-3°C warmer and sea level was 10-20 meters higher than now.
The rate of increase of atmospheric CO2 over the past 70 years is nearly 100 times larger than that at the end of the last ice age. As far as direct and proxy observations can tell, such abrupt changes in the atmospheric levels of CO2 have never before been seen.
The laws of physics mean that we face a much hotter, more extreme climate in the future.
LOL rockdoc123! Can you tell us about the junk science paper?
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.
Carbon dioxide concentrations — whose “greenhouse gas effect” traps heat and drives climate change — were around 280 parts per million circa 1880, at the dawn of the industrial revolution. They’re now 46 percent higher.
As you can see in the famed “saw-toothed curve” graph above, more formally known as the Keeling Curve, concentrations have ticked upward in an unbroken progression for many decades. But they also go up and down on an annual cycle that’s controlled by the patterns and seasonality of plant growth around the planet.
The rate of growth is about 2.5 parts per million per year, said Ralph Keeling, who directs the CO2 program at the Scripps Institution of Oceanography, which monitors the readings. The rate has been increasing, with the decade of the 2010s rising faster than the 2000s.
“It’s another milestone in the upward increase in CO2 over time,” Keeling said of the newest measurements. “It puts us closer to some targets we don’t really want to get to, like getting over 450 or 500 ppm. That’s pretty much dangerous territory.”
“As a scientist, what concerns me the most is not that we have passed yet another round-number threshold but what this continued rise actually means: that we are continuing full speed ahead with an unprecedented experiment with our planet, the only home we have,” Katharine Hayhoe, a climate scientist at Texas Tech University, said in a statement on the milestone....
dohboi wrote:The rate of growth is about 2.5 parts per million per year, said Ralph Keeling, who directs the CO2 program at the Scripps Institution of Oceanography, which monitors the readings. The rate has been increasing, with the decade of the 2010s rising faster than the 2000s.
“It’s another milestone in the upward increase in CO2 over time,” Keeling said of the newest measurements. “It puts us closer to some targets we don’t really want to get to, like getting over 450 or 500 ppm. That’s pretty much dangerous territory.”
“As a scientist, what concerns me the most is not that we have passed yet another round-number threshold but what this continued rise actually means: that we are continuing full speed ahead with an unprecedented experiment with our planet, the only home we have,”....
dohboi wrote:Week beginning on April 29, 2018: 409.71 ppm
Weekly value from 1 year ago: 409.02 ppm
Weekly value from 10 years ago: 387.20 ppm
Oddly low that week. Only ~.7 increase from last year's weekly number.
Random fluctuation, or some local disturbance, or machine error...or the beginning of the end of GW??!!![]()
Unfortunately, there hasn't been any reduction in CO2 emissions at all since 1992....in fact they have increased greatly with another significant increase occurring last year.
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