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OBSERVATIONS OF OZONE MIXING-RATIO BY NAGOYA 4 M MILLIMETER-WAVE TELESCOPE
KAWABATA, K; FUKUI, Y; OGAWA, H; MIZUNO, A; FUJIMOTO, M; NOZAWA, S; NAKANE, H; HOKO, H; YANG, J
1992
Source PublicationJOURNAL OF GEOMAGNETISM AND GEOELECTRICITY
ISSN0022-1392
Volume44Issue:11Pages:1085-1096
AbstractThe J = 6(1,5)-6(0,6) (110.8359 GHz) line of mesospheric ozone has been observed by employing the 4 m millimeterwave telescope equipped with an Nb SIS mixer receiver of the Department of Astrophysics, Nagoya University, during 16-17 January 1990 by frequency switching mode as part of DYANA Campaign. The SIS mixer is cooled by a closed cycle 4 K refrigerator and its receiver noise is 23 K (DSB). Spectroscopy is through a 1024 channel acousto-optical spectrometer with a frequency resolution of 50 kHz. The frequency shift and the time intervals for the frequency switching are 18 MHz and 2 seconds, respectively. The integration time was 6 minutes in most of the cases. R.m.s. errors of the brightness temperature were less than 0.14 K in 50 kHz resolution. Successive line profiles in the dawn are illustrated to show rapid depletion of ozone in the upper mesosphere. Ozone in the upper mesosphere depletes at sunrise in mesosphere substantially within the integration time of 6 minutes, Ozone mixing ratio has been estimated from the differential brightness temperature between the successive frequency offsets of 0.0, 0.2, 0.4, 0.8, 1.6, 3.2, and 6.4 MHz. The brightness temperature at these frequency offsets are obtained from line profiles smoothed by polynomial fitting in order to reduce statistical errors. Diurnal variations of ozone mixing ratio at the various altitude are illustrated. General features of the diurnal variation agree well With ZOMMERFELDS et al. (1989). The altitude profile of the mixing ratio at noon agrees well with the formula D(m)/cosh(alpha)[(R(m)(h - H(m))/alpha] by BRILLET (1989) but the one in midnight deviate from the model above 60 km.
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordDIURNAL-VARIATIONS ; MICROWAVE
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:A1992KH06000010
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8553
Collection期刊(老文献)
Affiliation1.NAGOYA UNIV,SOLAR TERR ENVIRONM LAB,TOYOKAWA,AICHI 442,JAPAN
2.PURPLE MT OBSERV,NANGJING,PEOPLES R CHINA
3.NATL INST ENVIRONM STUDIES,YATABE,IBARAKI 305,JAPAN
4.FUJITSU LABS LTD,ATSUGI 24301,JAPAN
Recommended Citation
GB/T 7714
KAWABATA, K,FUKUI, Y,OGAWA, H,et al. OBSERVATIONS OF OZONE MIXING-RATIO BY NAGOYA 4 M MILLIMETER-WAVE TELESCOPE[J]. JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY,1992,44(11):1085-1096.
APA KAWABATA, K.,FUKUI, Y.,OGAWA, H.,MIZUNO, A.,FUJIMOTO, M.,...&YANG, J.(1992).OBSERVATIONS OF OZONE MIXING-RATIO BY NAGOYA 4 M MILLIMETER-WAVE TELESCOPE.JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY,44(11),1085-1096.
MLA KAWABATA, K,et al."OBSERVATIONS OF OZONE MIXING-RATIO BY NAGOYA 4 M MILLIMETER-WAVE TELESCOPE".JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY 44.11(1992):1085-1096.
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