Accession Number : AD0711650

Title :   ON THE DIURNAL VARIATION OF THE EXOSPHERIC NEUTRAL HYDROGEN TEMPERATURE.

Descriptive Note : Rept. 6 Jun 69-1 Jul 70,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Metzger,Paul H. ; Clark,Malcolm A.

Report Date : 01 AUG 1970

Pagination or Media Count : 18

Abstract : Resonance filter data obtained from a Ly alpha scanning photometer on OGO 6 imply a mean exospheric hydrogen temperature of 900 degrees K for 8 June 1969, with a 200 degrees K variation dawn to dusk between 6 and 18 hr local time near the equator. Due to the tilt of the orbit planes by approximately one hour toward the summer pole, a north-south asmmetry of about 75 degrees K is seen as well. These data strongly suggest that sources of Ly beta external to the geocorona are smaller than previously thought. (Author)

Descriptors :   (*EXOSPHERE, TEMPERATURE), (*HYDROGEN, ULTRAVIOLET RADIATION), PHOTOMETERS, DOPPLER EFFECT, POLAR ORBIT TRAJECTORIES, SCIENTIFIC SATELLITES, ATMOSPHERIC SOUNDING, DIURNAL VARIATIONS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE