Readers may recall that we have reported on the massive amount of water vapor that has been injected into the stratosphere by the 2022 eruption of the Hunga-Tonga volcano. A recent study said a 13% increase in stratospheric water mass and a 5-fold increase of stratospheric aerosol load.
Water vapor is by far the strongest greenhouse gas according to NASA, and it stands to reason that the dramatic increase in stratospheric water vapor is having an effect on global temperature.
Based on my understanding of Wijngaarden and Happer in these pages the greenhouse effect is determined by the effective height from which IR radiation to space occurs.
Greenhouse warming occurs because of the negative lapse rate in the troposphere, and the effective emmission height being higher and therefore cooler, with increased concentration of GHG leads to less IR loss to space1) the temperature in the stratosphere increases with height.
Putting more H2O there will cause the effective level at which occurs black body emission to space to rise resulting in more radiation to space at a higher temperature i.e. global cooling2) Krakatoa.
In 1884 injected a huge amount of water vapour into the stratosphere causing cooling over many years or so we are told3) we were told back in the seventies that supersonic jet contrails in the stratosphere would cause clouds which would reflect visible and UV back into space So too with any water vapour in stratosphere - causing coolingso in summary increased water vapour in the stratosphere should cause cooling.
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