This is akin to sticking a skewer into the cake, around the outside edge, from the top down to the bottom. This provides complete data on the wind and temperature fields, including the size and structure of the storm, to estimate its radius of maximum winds and future direction.
這種作法就像是拿探測針從蛋糕頂部、沿著周邊垂直穿刺，可得到颱風環流範圍、結構的完整風場資料，以估計颱風暴風半徑及未來動向。