Abstract: The variation in cloudiness and percentage of possible sunshine for the contiguous United States and six regions thereof is examined, based on data from 101 National Weather Service stations for the years 1950?82. Over ...

Abstract: Direct beam hourly solar radiation values, measured near solar noon under clear skies, were used to show the decrease in radiation in the United States caused by the debris cloud from the El Chichon volcanic eruption of ...

Abstract: Zonal and meridional wind and temperature spectra for periods of oscillation ranging from 8 to 40 days are determined at 6-month intervals from daily observations of 50-mb wind and temperature for the 12 years 1959?71 at ...