Abstract
In an attempt to find out the characteristics of ozone distribution associated with the typhoon, analyses are made on the data of TOMS aboard NIMBUS-7 covering the south-western Pacific Ocean of the northern hemisphere. The analyzed data are for the months of July through October (typhoon season) and from 1979 through 1989.
Following features are found on the characteristics of the ozone concentration: the pattern of ozone concentration associated with the typhoon is approximately classified into two types: CD (Dense in the Center) type characterized with higher concentration in the central part and S (swirl) type similar to rainbands of a typhoon. CD type is classified further into A- and B-types. A-type is characterized with a clear-cut high concentration core surrounded by area with lower concentration, while in the case of B-type this feature is not manifest. In this paper, we report that CD-A type ozone signatures on TOMS data can be roughly grouped into typhoon and non-typhoon signatures by some geometrical factors of the signature.
