Planetary waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation

Details Planetary waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation Planetary waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icsu...18r....h&link_type=abstract

In International Council of Scientific Unions Handbook for MAP, Vol. 18 9 p (SEE N86-27719 18-46)

Mathematics

Logic

Atmospheric Circulation, Atmospheric Models, Atmospheric Temperature, Mesosphere, Meteorological Radar, Middle Atmosphere, Planetary Waves, Radar Measurement, Atmospheric Heating, Atmospheric Pressure, Optical Radar, Stratospheric Warming, Temperature Profiles, Zonal Flow (Meteorology)

Scientific paper

Lidar observations of the temperature from 30 to 80 km have been made at the Observatory of Haute-Provence on an operational basis since 1981. Data obtained during the four last winters indicate the quasi-systematic presence of traveling Rossby waves with periods ranging from 5 to 20 days and a vacillation of the zonal mean circulation leading to a succession of upper stratospheric warmings and associated mesospheric coolings spaced by 25 to 50 days. A semi-spectral model of the wave one-mean flow interaction has been used to interpret these results. When a stationary wave forcing is imposed at the lower boundary of the model, a vacillation of the zonal flow is obtained as soon as the amplitude of this wave reaches a critical value of about 140 m. When an 18-day westward traveling wave is imposed in supplement to this forcing, the date of occurrence of the upper stratospheric warmings is imposed by the coincidence of the phases of the two waves that enhanced the forcing.

Affiliated with

Also associated with

No associations

Rating

Planetary waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation 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 waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetary waves-mean flow interaction in the middle atmosphere: Lidar observations and modelisation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1162036