The 1993 Airborne Lidar and Observations of Hawaiian Airglow/Airborne Noctilucent Cloud (ALOHA/ANLC-93) campaigns were conducted during the summer and fall of 1993 to measure the wind, temperature, and other chemical species in the mesopause (80 to 100 km altitudes) region using lidars and airglow imagers. ANLC-93 focused on noctilucent clouds, middle atmospheric dynamics, and sporadic layering phenomenon at high latitudes. ALOHA-93 was designed to explore the nature of gravity wave activity and sporadic metal layers over the equatorial region of the mid-Pacific Ocean.
Both ANLC-93 and ALOHA-93 employed the NCAR Electra aircraft with a Na/Rayleigh/Raman lidar, airglow imager, and Fourier transform spectrometer as the payload, the WINDII and HRDI instruments on the Upper Atmospheric Research Satellite (UARS), and a wide variety of groundbased radar and optical instruments. Scientific flights proceeded as far north as 68N during ANLC-93 and as far south as 18S during ALOHA-93.
Both campaigns included major participation of the Middle Atmosphere Project of the Canadian Network for Space Research as well as support from the NSF CEDAR Program. Research groups from 16 different institutions in the United States, Canada, United Kingdom, Brazil, and Australia participated the campaigns. The initial scientific results were published in the Geophysical Research Letter (October 15, 1995, Volume 22, Number 20).
In this photograph the NCAR (National Center for Atmospheric Research) Electra aircraft was being prepared for a flight out of Edmonton, Alberta to Yellowknife, Northwest Territories in July 1993 during the ANLC-93 Campaign. Aboard the Electra were the University of Illinois Rayleigh/Na lidar, the Lockheed airglow imager, and Utah State airglow spectrometer.