That chart shows co2 to add 1.5 watts per square meter. What's that mean? It makes the air a little warmer. From
http://newton.nap.edu/books/0309075742/html/12.html
Quote:
CLIMATE FORCINGS IN THE INDUSTRIAL ERA
Figure 1 summarizes climate forcings that have been introduced during the period of industrial development, between 1750 and 2000, as estimated by the IPCC. Some of these forcings, mainly greenhouse gases, are known quite accurately, while others are poorly measured. A range of uncertainty has been estimated for each forcing, represented by an uncertainty bar or “whisker.” However, these estimates are partly subjective, and it is possible that the true forcing falls outside the indicated range in some cases.
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TABLE 1 Removal Times and Climate Forcing Values for Specified Atmospheric Gases and Aerosols Up to the year 2000
Forcing Agent - Approximate Removal Times*- Climate Forcing (W/m2)
Greenhouse Gases
Carbon Dioxide.......................................... >100 years ........1.3 to 1.5
Methane.....................................................10 years ......... 0.5 to 0.7
Tropospheric Ozone......................................10–100 days......0.25 to 0.75
Nitrous Oxide ..............................................100 years......... 0.1 to 0.2
Perfluorocarbon Compounds (Including SF6).....>1000 years........0.01
Fine Aerosols
Sulfate ..................................................... 10 days...........–0.3 to –1.0
Black Carbon................................................10 days........... 0.1 to 0.8
*A removal time of 100 years means that much, but not all, of the substance would be gone in 100 years. Typically, the amount remaining at the end of 100 years is 37%; after 200 years 14%; after 300 years 5%; after 400 years 2%
So it's agreed that co2 is the biggest factor when it comes to man adding to warming. And from my first post, anthropogenic CO2 produces less than 0.1 of one percent of the greenhouse effect, according to Dr Lindzen.
1-Man produces less than .01% of the greenhouse effect with what is far and away his largest contribution.
2-Man may have/has probably, pushed the natural swing of the climate along quicker and it may go higher because of that. But we just don't know.
3- Running around trying to put a guilt trip on people is sometimes effective for putting a guilt trip on people, but little more.
4-There are people using Global Warming as a tool to achieve political ends, or coerce people to do what the Chicken Littles think they should do.
According to the following graph, the rest of the world is taking a larger role, too.
