Planetary and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events

Details Planetary and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events Planetary and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3607806s&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 7, CiteID L07806

Mathematics

Logic

11

Atmospheric Processes: Middle Atmosphere Dynamics (0341, 0342), Atmospheric Processes: Tides And Planetary Waves, Atmospheric Processes: Mesospheric Dynamics, Atmospheric Processes: General Circulation (1223), Atmospheric Processes: Acoustic-Gravity Waves

Scientific paper

An investigation of planetary wave (PW) activities in UKMO (UK Meteorological Office) winds during winter of the years 1998-99 and 2005-06, when major sudden stratospheric warming (SSW) events occurred, shows that the amplitude of PW of zonal wave number 1 is considerably reduced in zonal winds, when the warming event is onset and the reduced activity persists several days even after the end of the SSW event. Similar reduction of PW activity in zonal winds has been observed in the wavelet spectrum of MF radar zonal winds at altitudes 84-98 km over Tirunelveli (8.7°N, 77.8°E). During this period of reduced PW activity, enhancement in gravity wave activity is observed during 2005-06 and is not observed during 1998-99 and the mean meridional winds change to more equatorward during 2005-06 and remain poleward during 1998-99. In accordance with TIME-GCM results, our observations show that the wind reversal occurred in the stratosphere during major warming events allows more eastward gravity waves to propagate into the mesosphere and lower thermosphere (MLT) region, which causes changes in the meridional circulation from poleward to equatorward.

Affiliated with

Also associated with

No associations

Rating

Planetary and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events 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 and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetary and gravity waves in the mesosphere and lower thermosphere region over Tirunelveli (8.7°N, 77.8°E) during stratospheric warming events will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1521651