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| Titel |
Anisotropy of small-scale stratospheric irregularities retrieved from scintillations of a double star α-Cru observed by GOMOS/ENVISAT |
| VerfasserIn |
V. Kan, V. F. Sofieva, 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 ; 5, no. 11 ; Nr. 5, no. 11 (2012-11-14), S.2713-2722 |
| Datensatznummer |
250003170
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| Publikation (Nr.) |
 copernicus.org/amt-5-2713-2012.pdf |
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| Zusammenfassung |
| In this paper, we discuss estimating anisotropy of air density
irregularities (ratio of characteristic horizontal and vertical scales) from
satellite observations of bi-chromatic scintillations of a double star whose
components are not resolved by the detector. The analysis is based on
fitting experimental auto- and cross-spectra of scintillations by those
computed using the 3-D spectral model of atmospheric irregularities
consisting of anisotropic and isotropic components. Application of the
developed method to the scintillation measurements of the double star
α-Cru by GOMOS (Global Ozone Monitoring by Occultation of Stars)
fast photometers results in estimates of anisotropy coefficient of ~15–20
at altitudes 30–38 km, as well as other parameters of atmospheric
irregularities. The obtained estimates of the anisotropy coefficient
correspond to small-scale irregularities, close to the buoyancy scale. |
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