Studies of solar Ca K plages and UV, X-ray and 10 cm variations. Technical memo

Technical Report · Wed Sep 01 04:00:00 EDT 1982

OSTI ID:5694250

Puga, L C; Donnelly, R F

The literature about Ca K plages is briefly reviewed with particular emphasis on the statistics of plage lifetimes, areas, and intensities. Inconsistencies among reports of Ca K plage data were examined and occasional problems found. Plage area is shown to be correlated to the associated sunspot area but the relation includes appreciable scatter. Estimates of the solar 1-8A X-ray flux based on Ca K plage data are shown to be more accurate than those based on the 10.7 cm radio flux. Daily means of the solar soft X-ray flux observed primarily from the SMS-2 satellites are presented for 1975-1976. The quality factor for solar soft X-ray data are presented for 1975-1980.

• Research Organization: National Oceanic and Atmospheric Administration, Boulder, CO (USA). Space Environment Lab.
• OSTI ID: 5694250
• Report Number(s): PB-83-186163; NOAA-TM-ERL-SEL-65
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METALS
CALCIUM
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IONIZING RADIATIONS
METALS
MICROWAVE RADIATION
NUMERICAL DATA
PLAGES
RADIATIONS
SOLAR ACTIVITY
SUNSPOTS
ULTRAVIOLET RADIATION
X RADIATION