Abstract
Surface pressure patterns of summer around Japan were classified objectively by use of correlation method. Surface pressure at 36stations, not at grids point, was used. Although 8 types of mappattern were found, difference among them is not always clear, and 30% of the entire samples can not be classified into the 8 types. However, an improvement of this method may find the relation. between some weather phenomena and pressure patterns, with reference to the other meteorological elements.
