Preliminary results of vertical ozone soundings at Wakkanai, Japan

In order to obtain better understanding of ozone change in northern Japan, soundings of vertical ozone profile by using an ECC type ozone sonde were conducted at Wakkanai (45.4°N, 141.7°E) in Hokkaido, the northernmost city of Japan, between 15th-24th February, 2001. Ten vertical profiles of ozone on consecutive ten days were obtained successfully. In this paper, the methods and results of the observations are shown.