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Politics : The Environmentalist Thread

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To: maceng2 who wrote (22236)	7/17/2008 6:41:42 PM
From: Thomas A Watson	Read Replies (1) of 36917

Sorry pearly, that is not the defined greenhouse effect that CO2 is a part of. If you do the same with a mt-pro non contact thermometer you will measure down to -76F on a clear night, as dewpoints go below 40, you will read way over 50F below whatever ambient. When there are clouds you read less than 20 to less than 10 degrees lower than ambient. For very low clouds you read ambient. Look at a cloud chart and maybe you will see why one should specify the type of clouds. I assume you know there are different types clouds. Clouds are at such a distance they can be thought of as a wall of water or ice that reflects back most of the IR being emmitted from below. How are those tons of water overhead like some trace ppm of CO2. They are directly reflecting IR, not absorbing and re-emiting back Pearly, the temperature measured by an IR thermometer in the 5 to 15um wavelengths is a direct function of dewpoint or clouds. As the ambient approaches the dewpoint, there it no difference in the measured temperature for clouds or no clouds. As dewpoint gets lower and lower the clear sky temperature gets lower and lower. It does not matter if it is day or night. Pearly, You just don't get it.

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