Ground-Based Millimeterwave Measurements of Strato-Mesospheric Ozone.

Abstract

The J= 61 ,5-60,6 (110.836 GHz) line of strato-mesopheric ozone has been measured employing a millimeterwave ozone sensor equipped with an SIS mixer receiver since January 1992 in a sporadic manner. The receiver noise of the SIS mixer is 34 K (SSB), and the spectrometer covers 60 MHz with a frequency resolution of 35 kHz at the present.

Diurnal and Seasonal Variations of Strato-Mesospheric Ozone.

“…In this sense, the method has an advantage for studies of strato-mesospheric 03. In recent years, it becomes strato-mesospheric 03 is measured extensively by millimeterwave radiometries thanks to recent advances of the techniques (Lobsiger and Kanzi, 1986;Zommerfelds et al, 1989;Ricaud et al, 1991;Parrish et al, 1992;Connor et al, 1994;Solomonov et al, 1994;Kawabata et al, 1994Kawabata et al, , 1996.…”

Development of a Millimeterwave Instrument for Measurements of Strato-Mesospheric Ozone Using a Superconductive Receiver.

“…From these observations, we can obtain vertical profiles of ozone mixing ratio in the altitude range between 35 and 80 km. Some observational results obtained by frequency switching observations have already been published elsewhere (Kawabata et al, 1994(Kawabata et al, , 1996. By the load switching mode observations, we can obtain vertical profiles of ozone down to the altitude of 30 km.…”

“…Observational errors of our instrument are briefly described in Kawabata et al (1996). The ozone sensor consists of a heterodyne receiver, acousto-optical spectrometer and a system computer.…”