Enhanced internal gravity wave activity and breaking over the northeastern Pacific–eastern Asian region

Enhanced internal gravity wave activity and breaking over the northeastern Pacific–eastern Asian region

We have found a stratospheric area of anomalously low annual cycle amplitude and specific dynamics in the stratosphere over the northeastern Pacific–eastern Asia coastal region. Using GPS radio occultation density profiles from the Formosat Satellite Mission 3/Constellation Observing System for Mete...

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Bibliographic Details
Published in:Atmospheric chemistry and physics Vol. 15; no. 22; pp. 13097 - 13112
Main Authors: Å ácha, P, Kuchař, A, Jacobi, C, PiÅ¡oft, P
Format: Journal Article
Language:English
Published: Katlenburg-Lindau Copernicus GmbH 26-11-2015
Copernicus Publications
Subjects:
Annual variations
Atmosphere
Atmospheric dynamics
Atmospheric pressure
Climate change
Coastal zone
Constellation Observing System for Meteorology, Ionosphere and Climate
Density profiles
Dynamic meteorology
Dynamics
Energy consumption
Global positioning systems
GPS
Gravitation
Gravitational waves
Gravity
Gravity waves
Hot spots
Internal gravity waves
Internal waves
Ionosphere
Meteorology
Middle atmosphere
Potential energy
Profiles
Propagation
Radio occultation
Satellite constellations
Satellite navigation systems
Satellite observation
Satellites
Stratosphere
Wave propagation
Japan
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Summary:We have found a stratospheric area of anomalously low annual cycle amplitude and specific dynamics in the stratosphere over the northeastern Pacific–eastern Asia coastal region. Using GPS radio occultation density profiles from the Formosat Satellite Mission 3/Constellation Observing System for Meteorology, Ionosphere, and Climate (FORMOSAT-3/COSMIC), we have discovered an internal gravity wave (IGW) activity and breaking hotspot in this region. Conditions supporting orographic wave sourcing and propagation were found. Other possible sources of wave activity in this region are listed. The reasons why this particular IGW activity hotspot was not discovered before as well as why the specific dynamics of this region have not been pointed out are discussed together with the weaknesses of using the mean potential energy as a wave activity proxy. Possible consequences of the specific dynamics in this region on the middle atmospheric dynamics and transport are outlined.
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-15-13097-2015