Intercomparison of stratospheric temperature profiles from a ground-based microwave radiometer with other techniques

Navas Guzman, Francisco Jesus; Kämpfer, Niklaus; Schranz, Franziska; Steinbrecht, Wolfgang; Haefele, Alexander (2017). Intercomparison of stratospheric temperature profiles from a ground-based microwave radiometer with other techniques. Atmospheric chemistry and physics Discussions, pp. 1-28. European Geosciences Union 10.5194/acp-2017-346

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Navas Guzman, Francisco Jesus; Kämpfer, Niklaus; Schranz, Franziska and Haefele, Alexander

Subjects:

600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

1680-7375

Publisher:

European Geosciences Union

Language:

English

Submitter:

Franziska Stämpfli

Date Deposited:

14 Jun 2018 14:48

Last Modified:

05 Nov 2019 02:27

Publisher DOI:

10.5194/acp-2017-346

BORIS DOI:

10.7892/boris.114723

URI:

https://boris.unibe.ch/id/eprint/114723

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