Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations

Details Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1937c&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 10, p. 1937-1940

Physics

19

Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

Polar mesospheric clouds (PMCs) were observed by a ground-based Fe Boltzmann temperature lidar for 65 h on 17-19 and 24-26 January 2000 above the geographic South Pole. The mean PMC backscatter ratio, volume backscatter coefficient, total backscatter coefficient, layer centroid altitude, and layer rms width are 53.5, 2.9×10-9m-1sr-1, 4.3×10-6sr-1, 85.37 km, and 0.78 km, respectively. Strong semidiurnal and diurnal oscillations were observed in the PMC backscatter ratio, volume backscatter coefficient, total backscatter coefficient, and centroid altitude. The oscillations are all maximum around 0630 and 1900 UT. The variations appear to be linked to vertical advection of the PMC scattering layers by a persistent oscillation in the vertical wind velocity. Scattering is strongest when the PMCs are highest which suggests that the colder temperatures at higher altitudes near the mesopause facilitate the formation of larger PMC particles.

Affiliated with

Also associated with

No associations

Rating

Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lidar observations of polar mesospheric clouds at South Pole: Diurnal variations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-934772