First continuous ground-based observations of long period oscillations in strato-/mesospheric wind profiles

Rüfenacht, Rolf; Hocke, Klemens; Kämpfer, Niklaus (2015). First continuous ground-based observations of long period oscillations in strato-/mesospheric wind profiles. Atmospheric chemistry and physics Discussions, 15(23), pp. 35035-35056. European Geosciences Union 10.5194/acpd-15-35035-2015

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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 measurements of tracers, as the radiometer offers the unique capability of near-continuous horizontal wind profile measurements. Observations from four campaigns at high, mid 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 (20–40 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 model 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:

1680-7375

Publisher:

European Geosciences Union

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

15 Jan 2016 10:54

Last Modified:

09 Mar 2017 13:13

Publisher DOI:

10.5194/acpd-15-35035-2015

BORIS DOI:

10.7892/boris.75007

URI:

https://boris.unibe.ch/id/eprint/75007

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