Accession Number : AD0680961

Title :   GREAT LAKES SOLAR ALTITUDE CHARTS AND TABLES.

Descriptive Note : Final research rept.,

Corporate Author : UNITED STATES LAKE SURVEY DETROIT MICH

Personal Author(s) : Bolsenga,S. J.

Report Date : OCT 1968

Pagination or Media Count : 117

Abstract : Solar altitudes for 41-49 degrees N latitude, thereby including the Great Lakes region, are presented as a function of solar declination and true solar time in both tabular and graphic forms. Standard astronomical equations were programmed for computer calculations in step widths of 1 deg, 30 min, and 10 minutes for the latitude, declination, and time of day, respectively. Solar altitude variation analysis according to time of the year and geographical location indicates widely variable conditions in the region. Sample daylight duration and sunrise-sunset calculations are given using the tables. (Author)

Descriptors :   (*SOLAR RADIATION, *GREAT LAKES), ALTITUDE, DIURNAL VARIATIONS, ICE, COMPUTER PROGRAMMING, MATHEMATICAL ANALYSIS, GRAPHICS, TABLES(DATA)

Subject Categories : Astrophysics
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE