Data are reported as a dry air mole fraction defined as the number of molecules of carbon dioxide divided by the number of all molecules in air, including CO 2 itself, after water vapor has been removed. The mole fraction is expressed as parts per million (ppm). Example: 0.000400 is expressed as 400 ppm.

2020-6-4

This new record represents an increase of 85 ppm in the 55 years since David Keeling began making measurements at Mauna Loa. The National Oceanic and Atmospheric Administration (NOAA) also said that the global surface average for carbon dioxide (CO2) last year was 412.5 parts per million (PPM), among the highest rates of increase ever documented since the federal agency started keeping records over six decades ago. They tell us that levels of carbon dioxide (CO 2) in the atmosphere are higher than they have been at any time in the past 400,000 years. During ice ages, CO 2 levels were around 200 parts per million (ppm), and during the warmer interglacial periods, they hovered around 280 ppm (see fluctuations in the graph). "It's halfway now between the pre-industrial level of CO2 in the atmosphere [280 parts per million] and a doubling of CO2 in the atmosphere.

Last Time it Was This High, There Were Trees at the South Pole. Think about this for a minute: We humans and our 26 Jul 2020 Global CO2 levels continue to increase, despite the slowdown of the to 2019, the CO2 levels have increased by at least 2-3 ppm (parts per million). was 2- 3C warmer and sea level was 10-20 meters higher than now. 23 Jun 2020 A table to convert all greenhouse gas (GHG) emissions into CO2 equivalents so they can be compared.

😉 /Martin. PS. Nivån 400 ppm är inte mer magisk än tex 398,12 eller 401,37. Men den har givetvis ett betydligt större symbolvärde.

2013-5-20 · So we’ve reached 400 ppm.… Now what happens? In May 2013, for the first time since accurate measurements of atmospheric carbon dioxide amounts began in 1958, a daily value of 400 parts per million (ppm) was observed at Mauna Loa in Hawaii, the site of the longest continuous observational CO2 …

2015-12-01 · The CO 2 level is now around 400 ppm. The danger zone? 450 ppm, which we may hit by 2040. Beyond that, the warming Earth and its inhabitants will likely experience extreme weather events, NOAA.

CO2 Dåtid. CO2 Ice Core Data; CO2 proxy Data; Historisk CO2 dataset; CO2 Nu. Dagligen CO2; Varje vecka CO2; En gång i månaden CO2; Årlig CO2; CO2 Acceleration; CO2 Övervakning; Kol i havet; Välgörenhet CO2 utsläpp; CO2 Framtida. 2100 projektioner; Show CO2

13 sept. 2020 Effet de serre record et chaleur en juillet 2020. Le CO2 atmosphérique atteint des niveaux records, En juillet, sa concentration est montée à 414 25. März 2021 Kohlendioxid-Werte erreichten bereits im März 418 ppm. Forscher befürchten weiteren Anstieg in den kommenden zwei Monaten. 5. Juni 2019 Im Mai 2019 erreichten die Konzentrationen des Treibhausgases erstmals den Jahreshöchstwert von knapp 415 parts per million (ppm), wie Zu Beginn der industriellen Revolution lag das CO2 in der Atmosphäre bei 280 ppm.

NOTE: Starting Feb. 10, 2021, the CO 2 data is now on the WMO X2019 scale.
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Climate Science is now a religion. Where AGW is PC Now feel bad about CO2. Every heat-wave Now 120 parts per million – The parts that El nivel de 400 ppm de CO2 nunca ha sido conocido por la humanidad y tenemos que 400 ppm ¿Camino hacia el Plioceno? Click to see the full post now.

“We’re definitely in the Pliocene now,” agrees Maureen Raymo, research professor at Columbia’s Lamont-Doherty Earth Observatory.
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Organisationen 350.org lyfter just 350 ppm CO2 som det egentliga långsiktiga målet i det internationella klimatarbetet. De arbetar främst i USA, men har avdelningar i flera andra länder. För att komma ner till 350 ppm behöver vi dels så gott som helt få bort alla utsläpp av växthusgaser och dessutom utveckla teknik som även kan ta bort en del av de utsläpp som vi redan orsakat.

http://www.co2now.org/Current-CO2/CO2-Now/; ^ [a b] Randall Donohue et al and waste fired plants today use SNCR (selective non-catalytic reduction).