Friday, April 13, 2012

Letter to NASA is Common Ploy in Climate Change Denial

“NASA has always been about looking out to the skies and beyond, not burying our heads in the sand,” climate scientist Michael Mann told Universe Today in an email “This is an old ploy, trying to cobble together a small group of individuals and make it sound like they speak with authority on a matter that they have really not studied closely. In this case, the effort was led by a fossil fuel industry-funded (climate change) denier who works for the Heartland Institute, and sadly he managed to manipulate this group of former NASA employees into signing on to this misguided statement.”
 
Mann added that 49 people out of tens of thousands of former and current NASA employees is just a tiny fraction, and that “NASA’s official stance, which represents the full current 16,000 NASA scientists and employees, is clear if you go to their website or look at their official publications: human-caused climate change is real, and it represents a challenge we must confront.”

1 comment:

Doug Cotton said...

Hansen et al got it wrong because they advocated that all radiation causes a transfer of thermal energy regardless of the temperatures of the source and target.

Of course radiation can go in all directions. It does so in a microwave oven, but not everything gets warmed in the oven by normal atomic absorption. In fact there is absolutely no atomic absorption involving changes in electron energy states. Instead, liquid water molecules in the food are quickly rotated (flipped or "snapped") through 180 degrees twice with each passing wave of radiation. It is molecular friction which warms the water, not atomic absorption such as happens in the Sun. The molecules in ice are too close to rotate, so ice is not melted this way. (See experiment in an earlier post above.) The defrost cycle turns power on and off in order to allow time for heat conduction from water to ice. The oven demonstrates that low frequency radiation does not act like high frequency radiation, even if the intensity (flux) is greater.

This is because of the main hypothesis in the paper that radiated energy from a source which is cooler than a target is not absorbed and converted to thermal energy by such changes in electron energy states at the atomic level. If the radiation from such a source is spontaneous, then the peak frequency in its Planck curve is proportional to its absolute temperature by Wien's Displacement Law. If thermal energy were transferred from such a cooler source to a warmer target then that process, if independent, would violate the Second Law of Thermodynamics (SLoT.) There are several pages in the paper explaining why this is the case, so I ask you to read Sections 1 to 5 in this regard.

Radiated energy is not thermal energy. It has to be converted to thermal energy, and that only happens if the source of the radiation was warmer than the target. Some or all of the radiation can and will resonate with the target. When this happens it supplies energy to the target, yes, but the energy is used by the target to do some of its own radiating. It can use it because it is identical in frequency to what it can emit itself. And this happens because the Planck curve for a cooler body is always fully contained within that for a warmer body. So the two-way radiation which corresponds to the area under the Planck curve for the cooler body just resonates in each body and gives it energy that can only be used for new radiation. Because the new radiation is identical, it looks as if the original radiation has been scattered. Hence the term "pseudo scattering" or, as I call it in my paper, "resonant scattering."