eCite Digital Repository
Gravity wave momentum flux in the mesosphere measured by VHF radar at Davis, Antarctica
Citation
Love, PT and Murphy, DJ, Gravity wave momentum flux in the mesosphere measured by VHF radar at Davis, Antarctica, Journal of Geophysical Research: Atmospheres, 121, (21) pp. 12,723-12.736. ISSN 2169-897X (2016) [Refereed Article]
![]() | PDF 1Mb |
Copyright Statement
Copyright 2016 American Geophysical Union
Abstract
Polar mesospheric summer echoes observed in VHF MST radar measurements at Davis, Antarctica 68.5°S, 78.0°E, are used to measure high-frequency gravity wave momentum flux in the vicinity of the mesopause during the Southern Hemisphere summer of 2014–2015. The momentum flux spectrum is generally isotropic with a slight bias in the seasonal mean toward the southeast. Zonal and meridional components of the seasonal mean momentum flux are an order of magnitude smaller than the absolute momentum flux. Diurnal and semidiurnal modulation of the momentum flux correspond to perturbations of the seasonal mean winds by atmospheric tides. Quantitative measures of gravity wave intermittency yield high values and increase with altitude through the mesopause region. These intermittency characteristics are attributed to the increase with altitude of wind variability through the mesopause region as a result of the tides.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | gravity waves, radar, momentum flux, polar mesospheric summer echoes |
Research Division: | Earth Sciences |
Research Group: | Atmospheric sciences |
Research Field: | Atmospheric dynamics |
Objective Division: | Environmental Management |
Objective Group: | Air quality, atmosphere and weather |
Objective Field: | Atmospheric processes and dynamics |
UTAS Author: | Love, PT (Dr Peter Love) |
ID Code: | 121590 |
Year Published: | 2016 |
Web of Science® Times Cited: | 2 |
Deposited By: | CRC-Antarctic Climate & Ecosystems |
Deposited On: | 2017-10-04 |
Last Modified: | 2017-11-10 |
Downloads: | 114 View Download Statistics |
Repository Staff Only: item control page