What makes atmospheric CO2 concentration go up and down ?
Joannes Sevenhans
Alcatel Academy Distinguished Member_2001 ...IEEE_Fellow_2000 for contributions to the design of solid state telecommunication transceivers ...PhD 1984 KULeuven ...Semi-retired ...Always looking for a next project ...
It is a puzzle ...
From 7000ppmCO2 540 million year ago to 400ppmCO2 300 million year ago and back up to 2800ppmCO2 170 million year ago and down again to 425ppmCO2 now in our holocene interglacial of the glacial/interglacial ciclic quaternary period with 2 pole ice caps controlling average ocean temperature in balance with solar irradiation and geothermal heat from volcano-magma.
7000 year ago CO2 concentration started rising again after many millennia decline with all the pole melting ice lumps in the ocean from zero latitude equator to +90 latitude arctic and to -90 latitude antarctic with both pole ice caps melting from +50 latitude to +80 latitude and from -50 latitude to -80 latitude in both northern hemisphere and southern hemisphere.
Just before 1800 A.D. we had the half a millennium long "Little Ice Age" causing a dip in the rising slope of the holocene atmospheric CO2 concentration.
But the law of conservation of CO2 on earth made the atmospheric CO2 concentration rise again in the early 19th century up to 450ppmCO2 in 1822, 202 year ago, 25ppmCO2 higher than today but to decline again after the global cooling of the "Dalton Solar Minimum" thanks to the solar cooling.
So we had low atmospheric CO2 concentration most of the 19the century but in the 20th century we went back up to 420ppmCO2 in 1945 to decline again below 330ppmCO2 in 1955.
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But then during the years 1950 until now we have this modern atmospheric CO2 peak going up again to 425ppmCO2 like in 1820 and 1945.
Since 1958 father and son Keeling measure CO2 concentration on Mauna Loa Hawaii.
In several other locations from arctic to antarctic, similar measurement give us numbers for the atmospheric CO2 concentration all over the globe.
Anyway
In climate science there are too many unanswered questions and too many unquestioned answers ...
But : Health & Climate & Energy are really very complicated and delicate politico-scientific stuff and also socio-economic stuff but we do the best we can and try to explain it as simple as possible but not simpler than that in the group :
on FIRE
11 个月I noticed from my bottle of soda outside the fridge that CO2 in the atmosphere/headspace increases when temperature gets higher. When back in fridge (temperature down) the pressure of the bottle decreased. So I definitely think CO2 follows temperature. Frankly, I am sure of it...
Thermal Power Plant Consultant & Advisor
11 个月We are ordinary human beings learn many things directly from nature,almighty God created everything with important system to balance round the clock since millions of years,like most efficient carbon cycle n along with many others. We all committed mistakes to overpower HIS CREATIVITY fr limitations of our virtual understanding on many complex n complicated systems. With thanks n beat regards ????