Comparisons of Southern and Northern Polar Mesospheric Clouds Based on Lidar Observations

Details Comparisons of Southern and Northern Polar Mesospheric Clouds Based on Lidar Observations Comparisons of Southern and Northern Polar Mesospheric Clouds Based on Lidar Observations

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa42b..02c&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA42B-02

Other

0340 Middle Atmosphere: Composition And Chemistry, 1640 Remote Sensing, 1655 Water Cycles (1836), 3334 Middle Atmosphere Dynamics (0341, 0342), 3360 Remote Sensing

Scientific paper

Since the first lidar observation of polar mesospheric clouds (PMC) in 1989 by a Na lidar at Andoya, extensive PMC observations have been made by lidars in both the northern and southern hemispheres. The lidar observations provide precise information on PMC altitudes, layer structure, and the diurnal and seasonal variations. Recently, the lidar observations at three Antarctic locations (South Pole, Davis, and Rothera) enable us to study the southern PMC properties in detail. The southern PMC exhibit some characteristics that are different from their northern counterparts, e.g., differences exist in the mean altitudes. However, there is large geophysical variability in PMC altitude and brightness in both hemispheres. Here we present a detailed comparison of the southern and northern PMC altitude distributions and brightness and their seasonal variations. The differences and similarities will be determined and possible causes for the differences will be discussed.

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