First Southern Hemisphere common-volume measurements of PMC and PMSE

Details First Southern Hemisphere common-volume measurements of PMC and PMSE First Southern Hemisphere common-volume measurements of PMC and PMSE

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3524804k&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 24, CiteID L24804

Mathematics

Probability

9

Atmospheric Processes: Mesospheric Dynamics, Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Processes: Clouds And Aerosols, Atmospheric Processes: Tides And Planetary Waves, Geographic Location: Antarctica (4207)

Scientific paper

Using Rayleigh lidar and Mesosphere-Stratosphere-Troposphere radar at Davis Antarctica (68.6°S) during the 2005-2006 austral summer, we obtained the first Southern Hemisphere common-volume measurements of Polar Mesospheric Clouds (PMC) and Polar Mesosphere Summer Echoes (PMSE). PMC were observed with 6% probability during 349 hours of lidar observations. PMSE were simultaneously observed during 70% of the PMC events. The mean centroid altitudes of simultaneous PMC and PMSE were 83.97 +/- 0.10 km and 85.31 +/- 0.14 km, respectively. The altitude difference (~1.3 km) is comparable to earlier boreal common-volume measurements. Both phenomena show clear diurnal variations in altitude and occurrence. PMC had a unimodal local time occurrence distribution which peaked 4-6 hours after solar midnight. PMSE were most prevalent at this time, but had a secondary occurrence peak ~6 hours after solar noon when PMC were absent. We explain the altitude-time distributions of PMC and PMSE in terms of the thermal structure of the mesopause region determined using measurements from the Aura satellite.

Affiliated with

Also associated with

No associations

Rating

First Southern Hemisphere common-volume measurements of PMC and PMSE 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 First Southern Hemisphere common-volume measurements of PMC and PMSE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First Southern Hemisphere common-volume measurements of PMC and PMSE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-967473