Application of the Rayleigh lidar to observations of noctilucent clouds

Details Application of the Rayleigh lidar to observations of noctilucent clouds Application of the Rayleigh lidar to observations of noctilucent clouds

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9814979m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. D8, p. 14,979-14,989.

Physics

7

Atmospheric Temperature, Noctilucent Clouds, Optical Radar, Rayleigh Scattering, Backscattering, Mathematical Models, Particle Size Distribution

Scientific paper

The feasibility of lidar detection of noctilucent cloud (NLC) returns with the Rayleigh lidar technique was determined by calculations of lidar photocount profiles for the Nd:YAG lidar wavelength of 532 nm (Rayleigh temperature lidar). These results affirm the feasibility of the application of this instrument to study the high-latitude summer phenomenon of NLCs. Rayleigh 532-nm lidar observations were carried out in Greenland for late July and August, 1990. Extended cloudiness hampered these measurements, and a display of NLCs was seen only on August 14-15, 1990, out of a total of 11 nights. No visual detection of NLCs in tile region of the zenith when the solar depression angle was 8.6 deg was noted. At this time the sky was sufficiently dark, and if there had been any NLCs overhead, visual NLC sightings should have been possible. The lidar observations provided measurements of the middle atmosphere temperature from 25 km to about 70 km for times near local midnight. Examination of the results for an indication of lidar Mie returns from NLCs was negative, which was consistent with the lack of visual detection.

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