Observations of the 5-day wave in the mesosphere and lower thermosphere

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

23

Scientific paper

The 5-day wave is the gravest symmetric Hough mode of westward propagating zonal wavenumber 1. This wave is observed using the SABER instrument aboard the TIMED satellite during the first three years of the spacecraft mission (2002 2004). Supporting measurements were made with mesospheric radar systems. To better interpret the observations, the NCAR thermosphere ionosphere mesosphere electrodynamics general circulation model (TIME-GCM) simulation of year 2003 is used for comparative analysis. For the simulation the lower boundary was specified using NCEP data. The climatology from SABER shows a May maximum in the amplitude of the 5-day wave, which is consistent with the seasonal dependence found in earlier studies. A particularly strong wave with a ˜6 day period was observed in May 2003 and is studied in some detail. There is considerable evidence from both data and model in our study that a major source for this wave was in the southern (winter) hemisphere. Cross-equatorial ducting allowed the wave to propagate into the northern (summer) hemisphere, where it was amplified by baroclinic instability.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Observations of the 5-day wave in the mesosphere and lower thermosphere 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 the 5-day wave in the mesosphere and lower thermosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of the 5-day wave in the mesosphere and lower thermosphere will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1492405

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.