What Determines The Minimum Possible Daily Air Temperature?

Written by Dr Jerry L Krause (Chemistry) on July 17, 2019. Posted in Current News

The answer to the question—What determines the minimum possible daily air temperature?—is not likely the daily solar radiation. For most of us have experienced that once the sun sets, the air temperature, which we commonly measure, begins to decrease.

Of course, there might be an exception or two caused by a shift of wind direction.

To simply answer this question one must scan only a portion of the great volumes of data that has been and is being measured by the RAWS (Remote Automated Water Station) project for several different USA government agencies at more than 1400 sites in the USA.

For one will find that the mean air temperature for the previous hour is always equal to, or greater than, the reported atmospheric dew point temperature calculated from the measured air temperature and mean relative humidity for the previous hour.

Despite the fact that there are more than 1400 RAWS sites, some of which were begun as early as 1985, I only learned about this project less than a year ago. (https://principia-scientific.com/the-corvallis-or-uscrn-site-a-natural-laboratory-part-two/)

I had previously written an essay (http://principia-scientific.org/new-scientific-law-greenhouse-effect/) which answered this question, but it seems that no one gave it serious consideration. So, given the volumes and volumes of data to support the claim that the measured air temperature has not been measured to be less than the measured atmospheric dew point temperature, I ask one to answer the title’s question for one’s self.

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