Terahertz Superconducting Radiometric Spectrometer in Tibet for Atmospheric Science

  • Sheng LiEmail author
  • Qijun Yao
  • Dong Liu
  • Wenying Duan
  • Kun Zhang
  • Junda Jin
  • Zhenhui Lin
  • Feng Wu
  • Jinping Yang
  • Wei Miao
  • Shengcai Shi


Terahertz superconducting radiometric spectrometer (TSRS), as one of seven instruments of the atmospheric profiling synthetic observation system (APSOS) project, was completed in the middle of 2017 after 5 years of development. It is a dual-band heterodyne receiver system based on high sensitive superconductor-insulator-superconductor (SIS) mixers which cover the frequency range of 180 to 380 GHz. With fast Fourier transform spectrometer (FFTS) of each band, real-time observation of 2 GHz bandwidth of high spectral resolution atmospheric molecular emission lines has been demonstrated. TSRS has been deployed at Yangbajing site, which stands on the Qinghai-Tibet Plateau at an altitude of 4300 m in southwestern China, since October 2017. It has been worked in a preliminary observation phase along with other active observation equipment of APSOS. Since then, ozone emission lines around 236 GHz and 358 GHz have been monitored simultaneously. Achieved data will be used to retrieve the in situ vertical distribution of ozone and its movement among different layers of the atmosphere.


Terahertz Superconducting Heterodyne receiver Molecular emission lines 



The authors would like to thank Xuguo Zhang and Weilin Pan for their help at Delingha observatory and Yangbajing site during the in situ observations. We would also like to thank Ming-Jye Wang and his teammates for the help of SIS mixer fabrication.

Funding Information

This work was supported by the National Natural Science Foundation of China under Grant 41127901 and 11503094, and in part by the CAS Joint Key Lab for Radio Astronomy.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Purple Mountain Observatory, CASNanjingChina
  2. 2.Key Laboratory of Radio Astronomy, CASNanjingChina
  3. 3.University of Chinese Academy of SciencesBeijingChina

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