Abstract: Various methods of conditioning the rawinsonde balloon were tried at the Amundsen-Scott IGY Station (South Pole), Antarctica, in an attempt to improve sounding heights. During the dark, cold months, conditioning of the ...

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: Five years of turbidity measurements from a network of stations in the United States are analyzed. Measurements are made with the Volz sunphotometer; the instrumentits calibration, and its use are described. The relationship ...