Global distributions of overlapping gravity waves in HIRDLS data

C. J. Wright, S. M. Osprey, J. C. Gille

Research output: Contribution to journalArticle

11 Citations (Scopus)
100 Downloads (Pure)

Abstract

Data from the High Resolution Dynamics Limb Sounder (HIRDLS) instrument on NASA's Aura satellite are used to investigate the relative numerical variability of observed gravity wave packets as a function of both horizontal and vertical wavenumber, with support from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on TIMED. We see that these distributions are dominated by large vertical and small horizontal wavenumbers, and have a similar spectral form at all heights and latitudes, albeit with important differences. By dividing our observed wavenumber distribution into particular subspecies of waves, we demonstrate that these distributions exhibit significant temporal and spatial variability, and that small-scale variability associated with particular geophysical phenomena such as the monsoon arises due to variations in specific parts of the observed spectrum. We further show that the well-known Andes/Antarctic Peninsula gravity wave hotspot during southern winter, home to some of the largest wave fluxes on the planet, is made up of relatively few waves, but with a significantly increased flux per wave due to their spectral characteristics. These results have implications for the modelling of gravity wave phenomena.

Original languageEnglish
Pages (from-to)8459-8477
Number of pages19
JournalAtmospheric Chemistry & Physics
Volume15
Early online date6 Jul 2015
DOIs
Publication statusPublished - 30 Jul 2015

Fingerprint

gravity wave
limb
Aura (satellite)
wave phenomena
subspecies
monsoon
planet
distribution
atmosphere
winter
modeling

Cite this

Global distributions of overlapping gravity waves in HIRDLS data. / Wright, C. J.; Osprey, S. M.; Gille, J. C.

In: Atmospheric Chemistry & Physics, Vol. 15, 30.07.2015, p. 8459-8477.

Research output: Contribution to journalArticle

Wright, C. J. ; Osprey, S. M. ; Gille, J. C. / Global distributions of overlapping gravity waves in HIRDLS data. In: Atmospheric Chemistry & Physics. 2015 ; Vol. 15. pp. 8459-8477.
@article{9bf764e240514fb283b4e159fb56d7b3,
title = "Global distributions of overlapping gravity waves in HIRDLS data",
abstract = "Data from the High Resolution Dynamics Limb Sounder (HIRDLS) instrument on NASA's Aura satellite are used to investigate the relative numerical variability of observed gravity wave packets as a function of both horizontal and vertical wavenumber, with support from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on TIMED. We see that these distributions are dominated by large vertical and small horizontal wavenumbers, and have a similar spectral form at all heights and latitudes, albeit with important differences. By dividing our observed wavenumber distribution into particular subspecies of waves, we demonstrate that these distributions exhibit significant temporal and spatial variability, and that small-scale variability associated with particular geophysical phenomena such as the monsoon arises due to variations in specific parts of the observed spectrum. We further show that the well-known Andes/Antarctic Peninsula gravity wave hotspot during southern winter, home to some of the largest wave fluxes on the planet, is made up of relatively few waves, but with a significantly increased flux per wave due to their spectral characteristics. These results have implications for the modelling of gravity wave phenomena.",
author = "Wright, {C. J.} and Osprey, {S. M.} and Gille, {J. C.}",
year = "2015",
month = "7",
day = "30",
doi = "10.5194/acp-15-8459-2015",
language = "English",
volume = "15",
pages = "8459--8477",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7324",
publisher = "European Geosciences Union",

}

TY - JOUR

T1 - Global distributions of overlapping gravity waves in HIRDLS data

AU - Wright, C. J.

AU - Osprey, S. M.

AU - Gille, J. C.

PY - 2015/7/30

Y1 - 2015/7/30

N2 - Data from the High Resolution Dynamics Limb Sounder (HIRDLS) instrument on NASA's Aura satellite are used to investigate the relative numerical variability of observed gravity wave packets as a function of both horizontal and vertical wavenumber, with support from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on TIMED. We see that these distributions are dominated by large vertical and small horizontal wavenumbers, and have a similar spectral form at all heights and latitudes, albeit with important differences. By dividing our observed wavenumber distribution into particular subspecies of waves, we demonstrate that these distributions exhibit significant temporal and spatial variability, and that small-scale variability associated with particular geophysical phenomena such as the monsoon arises due to variations in specific parts of the observed spectrum. We further show that the well-known Andes/Antarctic Peninsula gravity wave hotspot during southern winter, home to some of the largest wave fluxes on the planet, is made up of relatively few waves, but with a significantly increased flux per wave due to their spectral characteristics. These results have implications for the modelling of gravity wave phenomena.

AB - Data from the High Resolution Dynamics Limb Sounder (HIRDLS) instrument on NASA's Aura satellite are used to investigate the relative numerical variability of observed gravity wave packets as a function of both horizontal and vertical wavenumber, with support from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on TIMED. We see that these distributions are dominated by large vertical and small horizontal wavenumbers, and have a similar spectral form at all heights and latitudes, albeit with important differences. By dividing our observed wavenumber distribution into particular subspecies of waves, we demonstrate that these distributions exhibit significant temporal and spatial variability, and that small-scale variability associated with particular geophysical phenomena such as the monsoon arises due to variations in specific parts of the observed spectrum. We further show that the well-known Andes/Antarctic Peninsula gravity wave hotspot during southern winter, home to some of the largest wave fluxes on the planet, is made up of relatively few waves, but with a significantly increased flux per wave due to their spectral characteristics. These results have implications for the modelling of gravity wave phenomena.

UR - http://www.scopus.com/inward/record.url?scp=84937249214&partnerID=8YFLogxK

UR - http://dx.doi.org/10.5194/acp-15-8459-2015

U2 - 10.5194/acp-15-8459-2015

DO - 10.5194/acp-15-8459-2015

M3 - Article

AN - SCOPUS:84937249214

VL - 15

SP - 8459

EP - 8477

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7324

ER -