270-GHz SIS radiometer for stratospheric ClO observation

Satoshi Ochiai; Yoshihisa Irimajiri; Harunobu Masuko

doi:10.1117/12.410620

21 December 2000 270-GHz SIS radiometer for stratospheric ClO observation

Satoshi Ochiai, Yoshihisa Irimajiri, Harunobu Masuko

Author Affiliations +

Proceedings Volume 4152, Microwave Remote Sensing of the Atmosphere and Environment II; (2000) https://doi.org/10.1117/12.410620
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

A ground-based millimeter-wave radiometer was developed in Communications Research laboratory, and will be operated to observe stratospheric chlorine monoxide, ozone, and nitrous oxide at Eureka, the Arctic stratospheric observatory at 80 degree(s)N and 86 degree(s)W from December 2000. The radiometer is designed to detect weak emission and for long-term observation in a remote site. The most remarkable feature is that all optical components are integrated in the cryo- dewar and cooled down to less than 60 K. This makes the optical length short and is a great advantage to spectroscopic observation of atmosphere because the rapid ripple of spectral baseline due to standing waves never occurs in the input optics and the optics is thermally stable. This new radiometer was installed in Eureka in the spring of 2000. The radiometer system is fully remote- controllable, and will be operated without frequent local operation. We are expecting quasi-simultaneous observation of three molecules with the radiometer from this winter. The detail of the radiometer instruments is presented in this paper.

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Satoshi Ochiai, Yoshihisa Irimajiri, and Harunobu Masuko "270-GHz SIS radiometer for stratospheric ClO observation", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, (21 December 2000); https://doi.org/10.1117/12.410620

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