All-Sky Doppler Interferometer (ASDI): Determinations of thermospheric wind and temperature fields over large regions of the upper atmosphere

Manfred A. Biondi; Mark E. Zipf; Dwight P. Sipler; Jeffrey L. Baumgardner

doi:10.1117/12.187546

30 September 1994 All-Sky Doppler Interferometer (ASDI): determinations of thermospheric wind and temperature fields over large regions of the upper atmosphere

Manfred A. Biondi, Mark E. Zipf, Dwight P. Sipler, Jeffrey L. Baumgardner

Author Affiliations +

Proceedings Volume 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research; (1994) https://doi.org/10.1117/12.187546
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A novel all-sky Doppler interferometer (ASDI) has been used to measure Doppler shifts and widths of nightglow emission lines from the upper atmosphere, thereby permitting determination of the neutral wind and temperature fields over regions up to 2000 km in diameter. The ASDI instrument consists of efficient all-sky (160 degree(s) field-of-view) input optics, a 100 mm aperture Fabry-Perot interferometer and output optics which focus 5 orders of the interference ring pattern superposed on the sky image onto a 512 X 512 pixel, LN₂-cooled (-150 degree(s)C) CCD detector. Good quality CCD images of the midlatitude nightglow oxygen 630.0 nm red line (approximately equals 300 km altitude) and 557.7 nm green line (approximately equals 105 km altitude) and the OH 799.4 nm line (approximately equals 86 km altitude) are obtained in 5 - 15 min exposures. The image signal-to-noise ratio is sufficient for division of the 5 circular interference rings into 24 equal azimuthal sectors, so that Doppler shifts and widths for 120 distinct regions of the sky can be obtained from one exposure. Wind and temperature fields derived from the ASDI nightglow 630 nm measurements are compared for observations following the autumnal and the vernal equinoxes.

Citation Download Citation

Manfred A. Biondi, Mark E. Zipf, Dwight P. Sipler, and Jeffrey L. Baumgardner "All-Sky Doppler Interferometer (ASDI): determinations of thermospheric wind and temperature fields over large regions of the upper atmosphere", Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); https://doi.org/10.1117/12.187546

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available