Sunlight and Temperature / by kevin murray

Most people are pretty familiar with the temperature on a given day, perhaps through their smart phone, or through the display on their vehicle, or through any preferred media outlet, but the fact of the matter is that most people don't understand that the temperature being measured by all of these various devices are all drawing upon the same basic set of tools which is the recording of the current temperature as measured in the shade, above ground level and importantly being out of the elements of that day such as wind or rain.  This means, for people that go outside on a sunny day to which the temperature is being displayed at 55 degrees Fahrenheit may easily believe that the temperature in the sun feels appreciably higher, because, in fact, it is.  Contrarily, for those that go outside on the same day at 55 degrees Fahrenheit in which it is cloudy and the wind has kicked up, will find that the air feels appreciable colder, because, in fact, it is.

 

This means for a certainty that on very hot days, in which you are laboring outside, that many people doing work, are under the misimpression that the real temperature in the air is actually lower than it actually is, because that temperature has not taken into account the sun, the sun's angle, wind velocity, and the overall humidity.  Not too surprisingly, accuweather.com properly recognized that temperatures should take into account these factors and thereby came up with a temperature rating for cities that they have designated as their RealFeel® Temperature, which more people should pay attention to, because the RealFeel® Temperature can be of vital importance for those that are laboring outside.

 

In addition, temperatures within neighborhoods, can vary quite a bit, because of the amount of shading in a particular neighborhood, the amount of concrete and pavement utilized in a given neighbor as concrete and pavement both draw in much more heat to their respective surfaces as opposed to dirt or grass, and the ability or inability of wind to travel through neighborhoods is dependent upon trees and other impediments to the flow of wind.

 

The more knowledge that we have about the true temperature in our area, the better that we can adapt to being prudent in our activities of our day, for instance, many people are under the misimpression that the highest temperatures on a sunny day is at high noon or 12 PM, but that is almost never true, as first off the true definition of solar noon is that this is the time when the sun is at its highest elevation in the sky, which almost always occurs later than high noon, depending upon your time zone, and this is especially pronounced during "daylight savings time".  Additionally, the highest temperature on a given day is almost never at solar noon, because although the sun has reached its apex, its heat is still warming the earth despite the sun's angle now beginning its slow descent, so because more heat is still being generated than is being lost on the earth's surface, this means that the peak temperature of the day is often still approximately three hours later than the solar noon.