Observations of mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii

Details Observations of mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii Observations of mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa44a..02l&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA44A-02

Physics

[3334] Atmospheric Processes / Middle Atmosphere Dynamics

Scientific paper

Using the University of Illinois meteor radar observed mesopause region horizontal wind over Maui between 2002 and 2007, and Jet Propulsion Laboratory Rayleigh lidar observed mesospheric temperature over MLO, we are able to retrieve the mesospheric semi-annual oscillation (MSAO) and quasi-biennial oscillation (MQBO) over Hawaii. We found that, the first cycle of MSAO is clearly stronger than the second cycle, and out of phase with stratospheric SAO. The lidar observed temperature GW variances at 50-65km are clearly correlated with MSAO, with maxima (minima) variances corresponding to westerly (easterly) phase of MSAO. The zonal wind MQBO is ~5m/s near 80-85km and clearly in phase with SQBO over Hawaii instead of out of phase. The modulation of MSAO easterly phase by QBO was also observed, with strong (weak) phase of MSAO is corresponding to easterly (westerly) phase of stratospheric QBO, just in the opposite way as the modulation in the equatorial region. The possibility of additional force contributed from extratropical planetary waves to drive the easterly phases of both MSAO and MQBO over Hawaii will be discussed.

Affiliated with

Also associated with

No associations

Rating

Observations of mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii 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 mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of mesospheric semi-annual oscillation and quasi-biennial oscillation over Hawaii will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1780666