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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Maurice Winn who wrote (8502)	12/7/2006 4:49:00 PM
From: Alastair McIntosh	Read Replies (1) \| Respond to of 36921

Hello Mqurice. I copied the data (below) on Annual Mean Growth Rate in ppm of CO2 at Mauna Loa, Hawaii from cmdl.noaa.gov I graphed the data in Excel and plotted a linear regression line. Using a sophisticated mathematical technique (eyeballing) it appears that linear regression appears to fit the data almost perfectly, certainly better than exponential or power series. The slope of the regression line indicates a small annual increase in additional CO2 of 0.0275 ppm/yr. Another thing to keep in mind is that the temperature effect of atmospheric carbon dioxide is logarithmic, there is a diminishing response as you keep adding more. Annual Mean Growth Rate year ppm/yr 1959 0.94 1960 0.50 1961 0.96 1962 0.65 1963 0.74 1964 0.30 1965 1.07 1966 1.26 1967 0.68 1968 1.04 1969 1.37 1970 1.00 1971 0.78 1972 1.79 1973 1.18 1974 0.76 1975 1.09 1976 0.90 1977 2.07 1978 1.34 1979 1.64 1980 1.84 1981 1.44 1982 0.71 1983 2.16 1984 1.35 1985 1.22 1986 1.51 1987 2.35 1988 2.11 1989 1.28 1990 1.31 1991 0.99 1992 0.45 1993 1.31 1994 1.89 1995 2.01 1996 1.19 1997 1.98 1998 2.95 1999 0.91 2000 1.75 2001 1.62 2002 2.55 2003 2.31 2004 1.54 2005 2.54

To: Maurice Winn who wrote (8502)	12/8/2006 8:49:29 AM
From: Wharf Rat	Read Replies (1) \| Respond to of 36921

"So you are saying [they are saying] that over the past five years, CO2 concentration has increased by 8 ppm per year, for a total of 40 ppm increase. 2% of 380ppm = 8 ppm x 5 = 40 ppm" If it went up 2 PPM last year, a 2% increase would be 2.04 PPM this year.