196 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 70 



TEMPERATURE VARIATIONS AT DIFFERENT STATIONS IN THE 

 TROPICS AND OTHER REGIONS 



We have also studied the meteorological variations in a series of 

 Other tropical stations and have given the results of the investigation 

 in figure 71. The curves have the following significance: T for 

 temperature, B for air pressure, P for precipitation, N for cloudi- 

 ness, and T-A for temperature amplitude. At the top of the figure 

 the temperature and pressure curves for Batavia are repeated. In 

 the remainder of the figure are given curves for Wellington in south 

 India, Mauritius, Antananarivo in Madagascar, Port au Prince, 

 Haiti, Fort de France, Martinique, and finally Arequipa, Peru, and 

 Bombay, The temperature curves VIII a and b for Bombay are 

 taken from Arctowski's paper, 1912 and 191 5. The scale is not 

 exactly the same as the scales of the other curves, but very nearly 

 the same. 



Considering first the temperature curves (heavy lines) we see a 

 close similarity among them except that for Bombay after 1900 

 (curve VIII-6). As an example we may note especially the mini- 

 mum in the years 1903 and 1904 and the maximum in 1905 and 

 1906, which are found in all except the curve for Bombay and almost 

 exactly at coincident times. The other well marked maxima and 

 minima are found almost exactly at the same time in all the curves 

 or at the most with only a two-month phase displacement. We find, 

 in other words, the same variations, so that for example the 2f-year 

 period is found in different regions of the earth as it is found 

 in Batavia and Arequipa, Peru. 



However, the temperature curve for Bombay in the years 1900 

 to 1909 runs in exactly the opposite direction to all the others. This 

 is the more surprising because the other stations, Batavia, Welling- 

 ton, Mauritius, and Antananarivo show at the same time complete 

 agreement. All the stations lie around the Indian Ocean, More- 

 over the distance for example between Bombay and Wellington at 

 the south point of India is relatively very small. The curve Vlll-a 

 for Bombay for the years before 1889 shows, however, complete 

 agreement with the other curves (see fig. 91, la and IV). 



Arctowski (1912, 1914, 1915) has published temperature curves 

 fo'und by twelve-monthly consecutive means for a large number of 

 meteorological stations in different parts of the earth. In figures 

 72 and 73 we have repeated part of these curves, and with them 

 some of the curves obtained in the same way representing the dis- 

 tribution of temperatures in the Atlantic Ocean, in the Danish and 



