NO. 4 SUN S VARIATION AND TEMPERATURES — ABBOT 2/ 



18. POSSIBLE TERRESTRIAL CAUSATION OF THE CHANGES IN 

 PHASES AND AMPLITUDES OF THE TEMPERATURE RE- 

 SPONSE TO THE 6.456-DAY SOLAR PERIODICITY 



Having been unable to connect these fluctuations of phase and 

 ampHtude in temperature effects of the 6.6456 periodicity with any 

 cosmic causation, I can only hope that meteorologists may be able to 

 connect them with features of the atmospheric circulation. For I 

 repeat what I said above. The dates of solar change may be accurately 

 predicted. As yet the amplitudes of the periodic solar changes cannot be 

 individually measured with accuracy, and there is as yet no apparent 

 correlation of the temperature effects on the earth with corresponding 

 changes in the sun. 



The terrestrial temperature effects are very large. In their average 

 dates of recurrence they obey the period 6.6456 days perfectly. Un- 

 fortunately, though the four or five recurrences of a single month are 

 usually separated almost exactly by 6.6456-day intervals, they all may 

 be shifted from i to 3 days with respect to recurrences in other months. 

 The amplitudes of the individual recurrences within a single month 

 differ, but rarely differ to a very great extent. But from one month to 

 another, or from one year to another, they may differ by even as much 

 as tenfold. 



19. DATA FOR METEOROLOGISTS 



If the variations of phases and amplitudes could be predicted, this 

 large hitherto unused weather element might be of great value to 

 forecasters. In order that meteorologists may have data to work with, 

 if they should try to solve the enigma of the fluctuations of phases and 

 amplitudes, I have given in table 6 (ante) a selection of the best 

 supported cases of the shiftings of phase, and of the varying ampli- 

 tudes, assumed by the temperature effects of the 6.6456-day period at 

 Washington, from the year 191 o to 1945. The vacancies in the table 

 correspond to occasions when the curves I have prepared, similar to 

 figure 3, were too indefinite in their marches to give trustworthy 

 values of the phase shiftings or the amplitudes. It may generally be 

 assumed, however, that on these occasions the amplitudes were small. 



In further collection of information which may assist meteorologists 

 to search for the causes of fluctuations of phase and amplitude, I have 

 selected 12 occasions when, at Washington, there was a large dif- 

 ference in amplitude between temperature effects in one month and 

 the next. For each case I have determined the change of amplitude at 

 St. Louis and Helena. In the hope that these may be of value to com- 

 pare with the prevailing circulation of the atmosphere on these occa- 



