American URSI broadcasts of cosmic data

Abstract

Beginning the middle of August 1931, Science Service, cooperating with the American Section of the International Scientific Radio Union (URSI), is adding to the cosmic data, collected and broadcast, information concerning aurora. These data are supplied daily by the Alaska Agricultural College and School of Mines at College, Alaska.The aurora data as given out by Science Service have been decoded and added to the table of cosmic data which is published regularly in the JOURNAL. Under the general heading of aurora in the table, the first column gives the character of the day: 0 indicates no aurora; 1, faint; 3, moderate; 5, strong; 7, brilliant; and 9, no observation or no observations possible on account of cloudiness. The second column gives the number of hours during which aurora was present. The third column indicates the amount of sky covered by cloud on a scale of 0–10, where 0 means cloudiness, and 10 completely overcast.