Rocket Observation Of The Near Infrared Airglow Emissions In The Auroral Region

The rocket observation to measure the near infrared airglow emissions of N2 +, O2 and OH by using the filter radiometer<br>was done at Andoya rocket range (69.5°N) on Dec. 1, 1994. The airglow radiometer worked well enough to get the<br>airglow emission profiles under the active aurora. The periods of spin and precession of the rocket were about 10 s and<br>20 s, respectively, because of unknown trouble of the rocket body. Then the radiometers could get the airglow<br>information every 10 s during the upleg and downleg observations on the airglow emission layers. Although it is hard to<br>get the detailed information under such an observational condition, we got rough altitude information on the emission<br>layers for N2 + and O2 airglows. The peak height of the N2 + emission is 85 ~ 90 km and its layer is not expressed by a<br>Gaussian profile. On the other hand, the emission profile of the O2 is represented as a Gaussian profile whose peak is<br>around 92 km and the width is 15 km. It is very similar to the profiles observed under the normal airglow conditions.