Microwave radiometer to retrieve temperature profiles from the surface to the stratopause

Stähli, Oliver; Murk, Axel; Kämpfer, Niklaus; Mätzler, Christian; Eriksson, Patrick (2013). Microwave radiometer to retrieve temperature profiles from the surface to the stratopause. Atmospheric Measurement Techniques (AMT), 6(9), pp. 2477-2494. Copernicus Publications 10.5194/amt-6-2477-2013

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)

UniBE Contributor:

Stähli, Oliver; Murk, Axel; Kämpfer, Niklaus and Mätzler, Christian

Subjects:

600 Technology > 620 Engineering

ISSN:

1867-1381

Publisher:

Copernicus Publications

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

15 Sep 2014 17:24

Last Modified:

26 Jun 2016 01:52

Publisher DOI:

10.5194/amt-6-2477-2013

BORIS DOI:

10.7892/boris.52964

URI:

https://boris.unibe.ch/id/eprint/52964

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