BenevolentM -> RE: An Attempt to Understand the Science Behind Global Warming (9/30/2013 3:20:14 AM)
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ORIGINAL: epiphiny43 So, another who doesn't understand basic Physics. "Heat rises" within relatively homogenous fluids (gasses or liquids), IF there is colder material around or above because Most 'hot' fluids expand compared to their cooler volume. (Boyles Law, except for water between 0ºC and 4ºC, where water reaches it's maximum density, which keeps the ocean bottom from freezing!) Same mass, bigger volume, it's density is less and rises till surrounded by similar density (Temp) fluid, or reaches the surface/top of the fluid reservoir. See: Thermosiphon and Convection. "Hotter" ocean water would rise through the layers above, IF it were hotter THAN THEY ARE. Which isn't the case. The bottom layer in unexpected areas is showing warming as are unprecedented warmings of certain mid level waters. We have few and recent direct records, ocean surface levels (Height) imply water temps, however, and Have been quite stable. Till recently. (No balancing cooling elsewhere noted, warming areas/volumes are Big.) NONE are yet hotter than the warming layers above them! How could they be if the heat is moving down? Surface water warms and cools faster than deeper layers, being exposed far more to the heat engines, the atmosphere and direct Sunlight, which is the significance of seeing unexpected warming deeper than before. Warmer surface waters were expected. Heat is moving deeper faster than we thought it would. It ISN"T warming the lower waters to higher temps than the water above. So, no overturning, no convection. Next strawman, please. You may be right, but without working the actual equations, special conditions may exist where the laws of common sense break down. What is true at the surface of the earth may not be true in the deep oceans simply because the pressures are so high. It is like trying to understand what is occurring on Jupiter. It can humble us. We thought we knew so much, but didn't. If the equations were derived purely through empirical observations, then even the equations may fail you because you need data that is representative of the conditions. I don't care and it is off topic.
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