Montly mean values of the global radiation intensity (Qs) and the screen temperature (T) for a year have been gathered from 67 places at latitudes below 60 degrees. Plotting temperature versus radiation in each case yiclds a loop, whose range, mid-point, area and general slope have been evaluated. Various regularities have been discovered in the interrelationships of these features, and between them and the altitude, the upwind distance overland (d), and the latitude (A). Annual means of the radiation (Qs cal/cms · min) and the temperature corrected for altitude (Tc°C) are connected thus: Tc/Qs=102−1.2A. The quotient of the annual ranges of monthly mena temperatures and global radiation intensities (RT/RQ) varies asd0.2
The empirical relationships allow approximate estimation of the annual loop of radiation and temperature of any place at a latitude less than 60 degrees. For this, it is necessary to know only the latitude, altitude and the overland distance upwind, so this method of obtaining indicative values of the monthly mean global radiation intensity and screen temperature may be useful for poorlyinstrumented regions.