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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: Brumar89 who wrote (3715)	12/31/2008 3:46:09 PM
From: RetiredNow	Respond to of 86355

I do tend to get short with people who deny facts. The fact is that temperatures have been warming. Steve Harris constantly denies this. It's like arguing with someone over whether the sun will rise tomorrow. What a joke and a waste of time. The real debate is over whether or not man is the primary cause or if other factors are playing a more dominant role. For example, a legitimate riposte to man being the major cause of global warming would be to say, no it's sun spots. To that, I might rebut with an article from a well-regarded scientific institution, such as the following: Solar Variability & Global Warming Some uncertainty remains about the role of natural variations in causing climate change. Solar variability certainly plays a minor role, but it looks like only a quarter of the recent variations can be attributed to the Sun. At most. During the initial discovery period of global warming, the magnitude of the influence of increased activity on the Sun was not well determined. Solar irradiance changes have been measured reliably by satellites for only 30 years. These precise observations show changes of a few tenths of a percent that depend on the level of activity in the 11-year solar cycle. Changes over longer periods must be inferred from other sources. Estimates of earlier variations are important for calibrating the climate models. While a component of recent global warming may have been caused by the increased solar activity of the last solar cycle, that component was very small compared to the effects of additional greenhouse gases. According to a NASA Goddard Institute for Space Studies (GISS) press release, "...the solar increases do not have the ability to cause large global temperature increases...greenhouse gases are indeed playing the dominant role..." The Sun is once again less bright as we approach solar minimum, yet global warming continues.