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About 70 % of earth is covered with clouds and the rate of atmospheric water vapor is increasing. Also the warming of the oceans will most probably cause more and deeper low pressures and increased covering. This would decrease the insolation and thereby my question:

How much must the sun's radiation be reduced to offset global warming of today?

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    $\begingroup$ By about 3 Watt/m^2 $\endgroup$ May 5, 2019 at 12:18
  • $\begingroup$ @CountIblis: How come? $\endgroup$
    – Lehs
    May 5, 2019 at 12:40
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    $\begingroup$ See the Total column in the table at en.wikipedia.org/wiki/Radiative_forcing. $\endgroup$
    – G. Smith
    May 5, 2019 at 17:05
  • $\begingroup$ Thanks, both of you! $\endgroup$
    – Lehs
    May 5, 2019 at 23:17

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