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[A-1.1.1 Study on Accurate Measurement of Ozone in the Lower Stratosphere with Lidar]

[Contact Person]

Hideaki Nakane
Head, Ozone Layer Research Team
National Institute for Environmental Studies
Environment Agency
Onogawa, Tsukuba, Ibaraki 305, Japan
Phone +81-298-51-6111, Fax +81-298-51-4732
E-mail nakane@nies.go.jp

[Total Budget for FY1993-FY1995]

66,980,000 Yen (FY1995; 13,905,000 Yen)

[Key Words]

Ozone, Lidar, Lower Stratosphere, Stratospheric Aerosols, Baloon

[Abstract]

　Lidar methods for accurate measurement of ozone in the lower stratosphere were studied. Correction methods for the effect of the wavelength dependence of aerosol scattering in the differential absorption lidar measurement are studied. The method was applied to the datas of the NIES ozone lidar system. High spectral resolution lidar method was studied to obtain vertical profiles of aerosol parameters in the stratospheric aerosol layer, which are useful for correction of ozone lidar measurement in high aerosol concentration cases. Experimental studies were carried out on a differential ansorption lidar with a small wavelength separation and a Raman differential absorption lidar. Study was also conducted on a new technique for measuring ozone and other atmospheric trace species using a baloon based on laser long-path absorption. An accurate baloon positioning technique using inverse differential GPS method was developed and demonstrated.