Is US The Hottest Place On Earth? Yes, it is!

More precisely it definitely was in the month of July 2011 according to NASA’s Jet Propulsion Laboratory (JPL). On average the temperatures were 20 degrees Fahrenheit higher than normal. This led to the deaths of dozens of citizen. NASA AIRS (Atmoshperic Infrared Shounder) movies below show the heat wave evolution. Click on an individual image […]
More precisely it definitely was in the month of July 2011 according to NASA’s Jet Propulsion Laboratory (JPL). On average the temperatures were 20 degrees Fahrenheit higher than normal. This led to the deaths of dozens of citizen. NASA AIRS (Atmoshperic Infrared Shounder) movies below show the heat wave evolution. Click on an individual image for the movie
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Surface Air Temp Daytime Surface Skin Temp Daytime Surface Air Temp Nighttime Surface Skin Temp Nighttime
The movies demonstrate surface air temperature and surface skin temperature, during both daytime and nighttime conditions. What is surface air temperature? It is something we experience whenever we go outside. High surface air temperature makes even shady places feel hot. What is Surface skin temperature? It is  is what we feel when we touch the ground. What is the difference between the daytime and nighttime temperature? During daytime, the surface skin temperature is generally much warmer than surface air temperature because dark surfaces are so effective at absorbing sunlight. The surface air and skin temperatures are related by something invisible but actually quite familiar: infrared — or heat — radiation. Our skin is very sensitive to infrared radiation, making a sun-heated wall feel warm even from a few feet away after sunset. Air absorbs very little sunlight, but easily absorbs infrared radiation emitted by the warm surface. It’s the sun-warmed surface — not sunlight — that heats the air during daytime. What are your survival techniques for this hot summer?  Please comment below…  


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