[Fraxinus]

The real tragedy is not some stupid socialist carbon policy but the eventual shattering of public trust in science.

I very much agree. So much of the global warming BS is based on computer models. It has been warming for the duration of records (from 1850-1870), however there is very little known about climate and solar cycles greater than 11 years. There is some newer (last 5-10 years) information about climate cycles in the 30 year range, however, It seems that supporters of global warming refuse to admit to the possibility of climate and solar cycles that are hinted at with periods of 1500+ years. Do land use changes by man in the past century affect climate? Most definitely. Is man causing global warming? Not as certain.

[ancient_geezer]

It seems that supporters of global warming refuse to admit to the possibility of climate and solar cycles that are hinted at with periods of 1500+ years.

That is probably the understatement of the year.

The following is typical of input data for modeling solar irradiation with regards projection runs (in the particular NASA's http://data.giss.nasa.gov/modelE/ ).

Note the lack of long term variation in solar component after 2000. No attempt is made to take even the well known 80-year Gleissberg or 200-year Suess solar cycles into account in projections the longterm solar irradiation is assumed constant with only a fixed period/magnitude sunspot cycle.

Data @ NASA GISS Earth's Energy Imbalance Simulations

Data @ NASA GISS Forcings in GISS Climate Model

Data @ NASA GISS Forcings in GISS Climate Model Solar Iradiance:

 

This figure summarizes data obtained from Judith Lean and used in GISS GCM runs.

postscript (154 kb), README, tabular data (420 kb)

Instantaneous forcing was computed continuously from 1850 to 2000 using Model E with 16 layers.

tabular data (2 kb), postscript (35 kb) postscript, 1850 to 2000 (35 kb)