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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2017-346
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
02 Jun 2017
Review status
This discussion paper is under review for the journal Atmospheric Chemistry and Physics (ACP).
Intercomparison of stratospheric temperature profiles from a ground-based microwave radiometer with other techniques
Francisco Navas-Guzmán1, Niklaus Kämpfer1, Franziska Schranz1, Wolfgang Steinbrecht2, and Alexander Haefele3 1Institute of Applied Physics (IAP), University of Bern, Bern, Switzerland
2Meteorologisches Observatorium Hohenpeißenberg, Deutscher Wetterdienst, Hohenpeißenberg, Germany
3Federal Office of Meteorology and Climatology MeteoSwiss, Payerne, Switzerland
Abstract. In this work the stratospheric performance of a relatively new microwave temperature radiometer (TEMPERA) has been evaluated. With this goal almost three years of temperature measurements (January 2015–September 2016) from TEMPERA radiometer were intercompared with the measurements from different techniques as radiosondes, MLS satellite and Rayleigh lidar. This intercomparison campaign was carried out at the aerological station of MeteoSwiss at Payerne (Switzerland). In addition, the temperature profiles from TEMPERA were used to validate the temperature outputs from SD-WACCM model. The results showed in general a very good agreement between TEMPERA and the different instruments and the model with a high correlation (higher than 0.9) in the temperature evolution at different altitudes between TEMPERA and the different datasets. An annual pattern was observed in the stratospheric temperature with in general higher temperatures in summer than in winter and with a higher variability during wintertime. A clear change in the tendency of the temperature deviations was detected in summer 2015 which was due to the repair of an attenuator in the TEMPERA spectrometer. The mean and the standard deviations of the temperature deviations between TEMPERA and the different measurements were calculated for two periods (before and after the reparation) in order to quantify the accuracy and precision of this radiometer along these almost three years. The results showed absolute biases and standard deviations lower than 2 K for most of the altitudes and comparisons proved the good performance of TEMPERA to measure the temperature in the stratosphere.

Citation: Navas-Guzmán, F., Kämpfer, N., Schranz, F., Steinbrecht, W., and Haefele, A.: Intercomparison of stratospheric temperature profiles from a ground-based microwave radiometer with other techniques, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-346, in review, 2017.
Francisco Navas-Guzmán et al.
Francisco Navas-Guzmán et al.
Francisco Navas-Guzmán et al.

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Short summary
The paper presents the assessment of the stratospheric measurements of a relatively new temperature radiometer (TEMPERA) at 60  GHz. The temperature profiles from TEMPERA have been compared with measurements from different techniques as radiosondes, MLS satellite and Rayleigh lidar and also with the temperature outputs from SD-WACCM model. The results showed absolute biases and standard deviations lower than 2 K for most of the altitudes and comparisons proving the good performance of TEMPERA.
The paper presents the assessment of the stratospheric measurements of a relatively new...
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