First continuous ground-based observations of long period oscillations in the vertically resolved wind field of the stratosphere and mesosphere

Rüfenacht, Rolf; Hocke, Klemens; Kämpfer, Niklaus (2016). First continuous ground-based observations of long period oscillations in the vertically resolved wind field of the stratosphere and mesosphere. Atmospheric chemistry and physics, 16(8), pp. 4915-4925. European Geosciences Union 10.5194/acp-16-4915-2016

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Direct measurements of middle-atmospheric wind oscillations with periods between 5 and 50 days in the altitude range between mid-stratosphere (5 hPa) and upper mesosphere (0.02 hPa) have been made using a novel ground-based Doppler wind radiometer. The oscillations were not inferred from tracer measurements, as the radiometer offers the unique capability of near-continuous horizontal wind profile measurements. Observations from four campaigns at high, middle and low latitudes with an average duration of 10 months have been analyzed. The dominant oscillation has mostly been found to lie in the extra-long period range (20–50 days), while the well-known atmospheric normal modes around 5, 10 and 16 days have also been observed. Comparisons of our results with ECMWF operational analysis data revealed remarkably good agreement below 0.3 hPa but discrepancies above.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Microwaves

UniBE Contributor:

Rüfenacht, Rolf; Hocke, Klemens and Kämpfer, Niklaus

Subjects:

600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

1680-7316

Publisher:

European Geosciences Union

Language:

English

Submitter:

Simone Corry

Date Deposited:

24 Apr 2017 14:55

Last Modified:

24 Apr 2017 14:55

Publisher DOI:

10.5194/acp-16-4915-2016

BORIS DOI:

10.7892/boris.96897

URI:

https://boris.unibe.ch/id/eprint/96897

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