BALLOON-BORNE SPECTROSCOPIC OBSERVATION OF THE INFRARED HYDROXYL AIRGLOW

Authors
  1. Lowe, R.P.
  2. Lytle, E.A.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);University of Western Ontario, London ONT (CAN) Dept of Physics
Abstract
A balloon-borne grating spectrometer has been used to study the spectrum of the airglow between 1.8 m and 3.6 m and its diurnal variation. The principal features identified are the bands and sequences of the vibration-rotation spectrum of OH. The brightness of the 1-0 band at night was measured to be in the range 270-400 kR on two flights. A sudden decrease in the intensity of the hydroxyl bands occurred in morning twilight at a solar depression of 4o and is ascribed to the photodissociation of ozone. The temperature, as indicated by the Q/R branch ratio, rose from 170 K at night to 255 K at noon indicating a reduction in the height of the emitting layer during the day.
Keywords
Airglow
Date of publication
01 Jan 1973
Number of Pages
5
Reprinted from
Applied Optics, vol 12, no 3, 1973, p 579-583
DSTKIM No
73-04414
CANDIS No
19497
Format(s):
Hardcopy

Permanent link

Document 1 of 1

Date modified: