NO. 5 SOLAR VARIATION AND FORECASTING ABBOT 7 



merited by visual observations of the sun in Argentina. It is prepared 

 in a separate branch of the Argentine Weather Service from the 

 ordinary daily forecasts, and independently of them. 



(a) 



(b) 



Fig. 4. — Weekly solar forecasts and verifications. Weekly predicted tempera- 

 tures and rainfall for Buenos Aires are indicated by the dotted lines, and 

 observed temperature and rainfall by the full lines. 



It may seem to some readers that the close agreement shown in 

 figure 2 between the barometer at Sarmiento and solar variation 

 observed at Calama ought not to be expected. They will say that 



