Planetary-scale inertio gravity waves in the Mesosphere

Details Planetary-scale inertio gravity waves in the Mesosphere Planetary-scale inertio gravity waves in the Mesosphere

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30asc15m&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 23, pp. ASC 15-1, CiteID 2228, DOI 10.1029/2003GL018376

Physics

2

Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics (0341, 0342), Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Numerical Modeling And Data Assimilation, Meteorology And Atmospheric Dynamics: Theoretical Modeling, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

In the polar region of the upper mesosphere, horizontal wind oscillations have been observed with periods around 10 hours. Waves with such periods are generated in our Numerical Spectral Model (NSM), and they are identified as planetary-scale inertio gravity waves (IGW). These waves have periods between 9 and 11 hours and appear above 70 km in the zonal mean (m = 0), as well as in m = 1 to 4 propagating eastward and westward. They grow in magnitude to altitudes near 100 km and have vertical wavelengths of about 25 km. The m = 1 westward IGWs have the largest amplitudes, up to 30 m/s at the poles. The IGWs occur intermittently but reveal systematic seasonal variations. Their amplitudes generally are largest in late winter and spring. Numerical experiments show that the waves also appear without tidal excitation. Like the planetary waves in the model, the IGWs are produced by instabilities that arise in the mean zonal circulation.

Affiliated with

Also associated with

No associations

Rating

Planetary-scale inertio gravity waves in the Mesosphere 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 Planetary-scale inertio gravity waves in the Mesosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetary-scale inertio gravity waves in the Mesosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-879409