Although many measurements of the abundance of CO2 in the troposphere have been made, knowledge of its stratospheric abundances and variability is sparse. Here we report mid-latitude vertical profiles of CO2, up to 35 km, measured in 1979, 1982 and 1984 by analysing cryogenically collected balloon samples supplemented by air samples taken aboard aircraft. CO2 mixing ratios are not constant with altitude but rather decrease by ∼7 p.p.m.v. (parts per 106 by volume) from the tropopause to the mid-stratosphere. The growth rate of the atmospheric CO2 abundance caused by anthropogenic emission, which varies between 1.0 and 1.5 p.p.m.v. yr–1 at ground level1, is also observed at all stratospheric heights up to 35 km. The shape of the profiles suggests that excess CO2 above 20 km enters the stratosphere through tropical upwelling rather than mid-latitude diffusion. The time lag of this height region with respect to the tropospheric CO2 level is ∼5 yr. Increased concentration and vertical distribution of carbon dioxide in the stratosphere 22 Aug 1985
Epoch Times, 26 Mar 2023 | Humanity only has a few years to act before the world may irreversibly plunge into an environmental catastrophe of global proportions, climate experts warned in a recent report. Their calls are muffled, however, by a ballast of dozens of past dramatic predictions that have failed to pan out.
“Environmental experts have been predicting upcoming doom for many decades. Most, though not all, of the prognostications involve climatic cataclysm that appears to be just around the corner, only to fizzle out as the deadline approaches.
As the failed predictions pile up, climate experts appear to be more cautious in making their predictions too specific. The current general consensus among climate change proponents is that extreme weather events, such as droughts and storms, will become more prevalent or intense.” Read more: As Climate Experts Warn of Looming Catastrophe, Past Bad Predictions Hurt Their Message