A study of mesoscale gravity waves over the North Atlantic with satellite observations and a mesoscale model

Dong L. Wu, Fuqing Zhang

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Satellite microwave data are used to study gravity wave properties and variabilities over the northeastern United States and the North Atlantic in the December-January periods. The gravity waves in this region, found in many winters, can reach the stratopause with growing amplitude. The Advanced Microwave Sounding Unit-A (AMSU-A) observations show that the wave occurrences are correlated well with the intensity and location of the tropospheric baroclinic jet front systems. To further investigate the cause(s) and properties of the North Atlantic gravity waves, we focus on a series of wave events during 19-21 January 2003 and compare AMSU-A observations to simulations from a mesoscale model (MM5). The simulated gravity waves compare qualitatively well with the satellite observations in terms of wave structures, timing, and overall morphology. Excitation mechanisms of these large-amplitude waves in the troposphere are complex and subject to further investigations.

Original languageEnglish (US)
Pages (from-to)1-14
Number of pages14
JournalJournal of Geophysical Research D: Atmospheres
Volume109
Issue number22
DOIs
StatePublished - Nov 27 2004

Fingerprint

Gravity waves
satellite observation
gravity waves
gravity
gravity wave
Advanced Microwave Sounding Unit
Satellites
AMSU
Microwaves
stratopause
wave property
Troposphere
Northeastern United States
troposphere
winter
time measurement
occurrences
microwaves
observation satellite
causes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

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abstract = "Satellite microwave data are used to study gravity wave properties and variabilities over the northeastern United States and the North Atlantic in the December-January periods. The gravity waves in this region, found in many winters, can reach the stratopause with growing amplitude. The Advanced Microwave Sounding Unit-A (AMSU-A) observations show that the wave occurrences are correlated well with the intensity and location of the tropospheric baroclinic jet front systems. To further investigate the cause(s) and properties of the North Atlantic gravity waves, we focus on a series of wave events during 19-21 January 2003 and compare AMSU-A observations to simulations from a mesoscale model (MM5). The simulated gravity waves compare qualitatively well with the satellite observations in terms of wave structures, timing, and overall morphology. Excitation mechanisms of these large-amplitude waves in the troposphere are complex and subject to further investigations.",
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A study of mesoscale gravity waves over the North Atlantic with satellite observations and a mesoscale model. / Wu, Dong L.; Zhang, Fuqing.

In: Journal of Geophysical Research D: Atmospheres, Vol. 109, No. 22, 27.11.2004, p. 1-14.

Research output: Contribution to journalArticle

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