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| Titel |
On the effect of moisture on the detection of tropospheric turbulence from in situ measurements |
| VerfasserIn |
R. Wilson, H. Luce, H. Hashiguchi, M. Shiotani, F. Dalaudier |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 3 ; Nr. 6, no. 3 (2013-03-14), S.697-702 |
| Datensatznummer |
250017841
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| Publikation (Nr.) |
 copernicus.org/amt-6-697-2013.pdf |
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| Zusammenfassung |
| The present paper addresses the detection of turbulence
based on the Thorpe (1977) method applied to an atmosphere where
saturation of water vapor occurs.
The detection method proposed by Thorpe
relies on the sorting in ascending order of a measured profile
of a variable conserved through adiabatic processes,
(e.g. potential temperature).
For saturated air, the reordering should be applied
to a moist-conservative potential temperature, θm,
which is analogous to potential temperature
for a dry (subsaturated) atmosphere.
Here, θm is estimated from the Brunt–Väisälä frequency
derived by Lalas and Einaudi (1974) in a saturated atmosphere.
The application to balloon data shows that
the effective turbulent fraction of the troposphere can dramatically
increase when saturation is taken into account.
Preliminary results of comparisons with data simultaneously collected
from the VHF Middle and Upper atmosphere radar (MUR, Japan)
seem to give credence to the proposed approach. |
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