Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region

Details Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa53a1248w&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA53A-1248

Physics

[3332] Atmospheric Processes / Mesospheric Dynamics, [3384] Atmospheric Processes / Acoustic-Gravity Waves

Scientific paper

The sodium wind-temperature lidar at the ALOMAR observatory (69N,16E) can measure the sodium density from 85-100km altitude with 150m height and 15 sec time resolution during winter under good conditions. Radial winds and temperatures can be measured with 1-2 m/s and 1-2 K error after averaging to 1 min in time and 1-2 km in altitude. This allows determination of the short period wave spectrum down to 30sec in Na density and 2min in wind and temperature. Preliminary analysis shows a number of oscillations with observed periods that are less than the buoyancy period. We have also observed an oscillation in the height of a strong summertime sodium sporadic layer with 500m amplitude and 45sec period. We will show the short period spectrum for the full high-resolution database and investigate the sources of these oscillations. Some possibilities include Doppler shifting of the intrinsic frequencies, acoustic waves, or advection of horizontal gradients through our lidar beam.

Affiliated with

Also associated with

No associations

Rating

Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region 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 Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of Waves with Observed Periods less than the Buoyancy Period in the Winter Polar Mesopause Region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1781213