NASA GISS junk scientist Andy Lacis thinks you're stupid: He claims that natural variability makes *no* long term trend contribution

Further Comment By Andy Lacis On CO2 As A Climate Thermostat « Climate Science: Roger Pielke Sr.

Since the natural variability and solar cycle forcing produce fluctuations about the global equilibrium temperature, they make no long term trend contribution (except that for a short climate record, they make it difficult to extract the global warming trend due to GHG increases from the climate record by statistical means).

Accordingly, there is a clear demonstration that without the radiative forcing provided by the non-condensing GHGs, the terrestrial greenhouse effect collapses because there is no structural temperature support to restrain the current climate water vapor from condensing and precipitating. Since atmospheric CO2 accounts for about 80% of the non-condensing GHG forcing, we thus conclude that CO2 acts as a thermostat in controlling the equilibrium temperature of Earth.

NASA GISS: Andrew A. Lacis

# B.A., Physics, 1963, University of Iowa
# M.S., Astronomy, 1964, University of Iowa
# Ph.D., Physics, 1970, University of Iowa