eastern Siberia and southerly winds prevail along the northern 

 portion, blowing out from the cold land surface toward the Arctic 

 Sea. These southerly winds are strongest along the north coastal 

 areas, while in the interior the winds are light with long periods 

 of calm. 



For instance, at Verkhoyansk in the interior, during February 

 to May there is practically no surface wind. Even in October and 

 November the surface winds are light, while at Tiksi Bay, on the 

 coast, the average wind velocity is about 12 m. p. h. except dur- 

 ing March and April when the average drops to between 6 and 

 7 m. p. h. At Verkhoyansk the frequency of gales is greatest dur- 

 ing the months of June, July, and August with an average of two 

 or three per month. During these latter months the thermal low 

 pressure system shows greatest development over the interior. 

 Along the coast the frequency of gales is least during these same 

 summer months, Tiksi Bay having an average of one per month 

 from April through September. During the colder months when 

 the anticyclone is well developed over the continent there are no 

 gales in the interior at Verkhoyansk, but during these same 

 months at Tiksi Bay the frequency is greatest. From October 



AK.CTIC SEA 



Verkhoyansk Mt3. 



Figure 3-3. — Winter wind system of Siberia east of Verkhoyansk Mountains. 



101 



