Observation of gravity wave generation and breaking in the lowermost stratosphere | Zendy

Pavelin Edward | Zendy; Whiteway James A. | Zendy; Vaughan Geraint | Zendy

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Observation of gravity wave generation and breaking in the lowermost stratosphere

Author(s) -

Pavelin Edward,

Whiteway James A.,

Vaughan Geraint

Publication year - 2001

Publication title -

journal of geophysical research: atmospheres

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.67

H-Index - 298

eISSN - 2156-2202

pISSN - 0148-0227

DOI - 10.1029/2000jd900480

Subject(s) - stratosphere , radiosonde , tropopause , geostrophic wind , gravity wave , wind shear , geology , geophysics , instability , gravitational wave , breaking wave , amplitude , physics , turbulence , atmospheric sciences , perturbation (astronomy) , meteorology , wave propagation , mechanics , climatology , astrophysics , wind speed , astronomy , optics

Measurements with the Aberystwyth VHF radar have revealed a striking illustration of gravity wave generation and breaking in the lowermost stratosphere. Horizontal wind measurements show an inertia‐gravity wave that was essentially monochromatic and persisted for longer than 5 days, with a maximum perturbation amplitude of approximately 10 ms −1 . Radiosonde measurements show that this wave induced shear instability that led to intense turbulence close to the tropopause. The event was associated with a highly curved jet stream over Europe, suggesting that geostrophic adjustment was a likely source mechanism.

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