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[A-1.3.3 Laboratory Study on Measurement Techniques ofand Physical Processes of Stratospheric Aerosols(Final Report)]

[Contact Person]

Nobuhiro Aya
Senior Researcher
Environmental Engineering Division, Energy Department,
Mechanical Engineering Laboratory, AIST, MITI
Namiki 1-2, Tsukuba, Ibaraki, 305 Japan
Tel +81-298-58-7271 Fax +81-298-58-7275
E-mail aya@mel.go.jp

[Total Budget for FY1993-1995]

25,036,000 Yen (FY1995; 7,831,000 Yen)

[Abstract]

　In order to quantitatively evaluate the effects of Polar stratospheric clouds(PSCs) on the mechanism of ozone depletion, laboratory studies are very important. In this subject, experimental equipments and techniques have been developed for laboratory study using the model particles of PSCs. For analysis of the physical processes of the model particles, an experimental chamber was constructed where the conditions of gases was well-managed and where levitation techniques by ultrasonic wave and electrodynamics balance was applied. For a measurement of model particles, our in-situ measurement system by dynamic/static light scattering methods was improved, for applying for moving, low-concentrationed particles with high accuracy. For an electrodynamics measurements, electric chargers and DMA-FC system for low temperature particles were also designed and made.

[Key Words]

Ozone depletion, PSCs, Aerosol physics, Aerosol measurement