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| Titel |
Microwave radiometer to retrieve temperature profiles from the surface to the stratopause |
| VerfasserIn |
O. Stähli, A. Murk, N. Kämpfer, C. Mätzler, P. Eriksson |
| 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. 9 ; Nr. 6, no. 9 (2013-09-25), S.2477-2494 |
| Datensatznummer |
250085069
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| Publikation (Nr.) |
 copernicus.org/amt-6-2477-2013.pdf |
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| Zusammenfassung |
| TEMPERA (TEMPERature RAdiometer) is a new ground-based radiometer which measures in a frequency range
from 51–57 GHz radiation emitted by the atmosphere. With this instrument it
is possible to measure temperature profiles from ground to about 50 km. This
is the first ground-based instrument with the capability to retrieve
temperature profiles simultaneously for the troposphere and stratosphere. The
measurement is done with a filterbank in combination with a digital
fast Fourier transform spectrometer. A hot load and a noise diode are used as
stable calibration sources. The optics consist of an off-axis parabolic
mirror to collect the sky radiation. Due to the Zeeman effect on the emission
lines used, the maximum height for the temperature retrieval is about 50 km.
The effect is apparent in the measured spectra. The performance of TEMPERA is
validated by comparison with nearby radiosonde and satellite data from the
Microwave Limb Sounder on the Aura satellite. In this paper we present the
design and measurement method of the instrument followed by a description of
the retrieval method, together with a validation of TEMPERA data over its
first year, 2012. |
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