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[quote user="DennisHeld"][quote user="Bucyrus"][ <p>I don't know what would be causing a natural warming period, but they have happened in the past in instances such as the Roman Warming and the Little Climate Optimum. It seems reasonable to believe that a natural warming period would warm the oceans to some extent. And if it did, it would release more CO2, and some might believe the extra CO2 is man's contribution rather than a natural contribution of the oceans. Moreover, they might conclude that the extra CO2 is causing the warming when actually the warming might be a natural phenomenon that is causing the extra CO2 to be released from the oceans.</p><p>[/quote]<br /><br />The Roman Warming and the Little Climate Optimum were both caused by unusual solar activity. Solar activity that is currently not happening. Also, the ocean absorbs CO2 largely. And the CO2 levels in the ocean are larger than usual at depths that are unusual. <br />I'd be happy to buy the warmth causes CO2, but I don't know the the warming mechanism. Except for CO2.[/quote]</p><p>Would you then conclude that it is possible that we are experiencing a naturally caused warming trend even though we don't know the cause?</p>
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