Development of portable-type laser heterodyne spectrometer for the observation of the ozone hole

便携式臭氧空洞观测激光外差光谱仪的研制

• 批准号: 04554014
• 负责人: FUKUNISHI Hiroshi
• 金额: $ 9.98万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04554014/
• 关键词: Laser heterodyne spectroscopy; Ozone; Methane; Nitric acid; Infrared spectroscopy; Stratosphere; Tunable diode laser; リモートセンシング; オゾンホール; 半導体レーザー; 大気観測

The portable-type laser heterodyne spectrometer was designed in 1992 and its construction was completed in 1993. It is equipped with four tunable diode lasers for measurements of various trace gases in the wavelength region of 8-11 mu m. The weight of the optics is 70 kg. The fine adjustment of the optics is easier than the former type and the laser instability due to optical feedback is reduced. This spectrometer has realized an extremely high wavenumber resolution of 0.0013 cm^<-1> and a high signal-to-noise ratio (typically 1500 for O_3 and 500 for N_2O) for each spectrum measured every 10 minutes. These characteristics enable us to derive the altitude profiles of atmospheric minor gases in the troposphere and stratosphere from observated spectra. Many observations were performed using this portable-type laser heterodyne spectrometer. The vertical profiles of ozone, nitrous oxide, and methane were observed at Tsukuba and Sendai. In 1994, similar observations were carried out at Syowa station, Antarctica. In 1996 and 1997, observations of ozone, nitrous oxide, and methane were performed for the validation of RIS and ILAS instruments on board the ADEOS satellite. Thus, important information on the ozone depletion processes was obtained using the portable-type laser heterodyne spectrometer developed in this study.

便携式激光外差光谱仪于1992年设计，1993年建造完成。它配备了四个可调谐二极管激光器，用于在8-11 μ m波长范围内测量各种痕量气体。光学系统的重量为70公斤。光学系统的微调比前一种更容易，并且减少了由于光反馈引起的激光不稳定性。该谱仪具有极高的波数分辨率（0.0013 cm ~ 2<-1>）和高信噪比（O_3为1500，N_2O为500），每10分钟测量一次。这些特征使我们能够从观测光谱中得到对流层和平流层大气微量气体的高度分布。使用这种便携式激光外差光谱仪进行了许多观测。在筑波和仙台观测了臭氧、一氧化二氮和甲烷的垂直廓线。1994年，在南极洲的Syowa站进行了类似的观测。1996年和1997年，为了验证ADEOS卫星上的RIS和ILAS仪器，对臭氧、一氧化二氮和甲烷进行了观测。因此，使用本研究中开发的便携式激光外差光谱仪获得了关于臭氧消耗过程的重要信息。

项目成果

Shigematsu N.: "Ground-based remote sensing of Nitrous oxide height profiles with a tunable diode laser heterodyne spectrometer" Master thesis, Tohoku University. (1994)

Shigematsu N.：“利用可调谐二极管激光外差光谱仪对一氧化二氮高度剖面进行地面遥感”硕士论文，东北大学。

小出理史 他: "レーザーヘテロダイン分光計によるメタン高度分布の導出" 第16回レーザーセンシングシンポジウム予稿集. 16. 55-58 (1993)

Osamu Koide 等人：“使用激光外差光谱仪导出甲烷高度分布”第 16 届激光传感研讨会论文集（16. 55-58）（1993 年）。

Taguchi M.: "Studies on infrared remote sensing of stratospheric ozone and minor constituents by the laser heterodyne spectroscopy" Doctor thesis, Tohoku University. (1994)

田口 M.：“激光外差光谱对平流层臭氧和微量成分的红外遥感研究”博士论文，东北大学。

福間 憲昭: "北半球春期極渦ダイナミクスと中高緯度成層圏オゾン変動の研究" 東北大学・修士論文. (1997)

福间纪明：“北半球春季极涡动力学与中高纬度平流层臭氧波动研究”，东北大学硕士论文（1997）。

Yamanaka H.: "Studies on a balloon-borne infrared laser heterodyne spectrometer" Master thesis, Tohoku University. (1996)

Yamanaka H.：“气球载红外激光外差光谱仪的研究”硕士论文，东北大学。