. Smithsonian miscellaneous collections. (Publication 3806) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JULY 2, 1945 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 104. NUMBER 12 TRoebltng jFunb THE SOLAR CONSTANT AND SUNSPOT NUMBERS BYL. B. ALDRICH Director, Astrophysical ObservatorySmithsonian Institution. (Publication 3806) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JULY 2, 1945 Zfyc £orb ($&Uimovt (preee BALTIMORE, MD., 0. S. A. IRoebling jfunfc THE SOLAR CONSTANT AND SUNSPOT NUMBERS By L. B. ALDRICHDirector, Astrophysical Observatory, Smithsonian Institution
. Smithsonian miscellaneous collections. (Publication 3806) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JULY 2, 1945 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 104. NUMBER 12 TRoebltng jFunb THE SOLAR CONSTANT AND SUNSPOT NUMBERS BYL. B. ALDRICH Director, Astrophysical ObservatorySmithsonian Institution. (Publication 3806) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JULY 2, 1945 Zfyc £orb ($&Uimovt (preee BALTIMORE, MD., 0. S. A. IRoebling jfunfc THE SOLAR CONSTANT AND SUNSPOT NUMBERS By L. B. ALDRICHDirector, Astrophysical Observatory, Smithsonian Institution It has been the chief work of the Astrophysical Observatory of theSmithsonian Institution to carry out at various high-altitude stationsa long series of determinations of the solar constant, the intensity ofthe suns radiation outside our atmosphere at mean solar distance. In1942 the Observatory published in volume 6 of its Annals an exten-sive summary (table 24) of all solar-constant values for the period1923 through September 1939. At that time a considerable numberof good determinations scattered through the period included intable 24 were examined x for correlation with Wolfer sunspot num-bers. It was concluded that the data showed little evidence of correla-tion. This was disappointing, since both solar
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