2011年のスギ花粉前線

概要

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Progress of the 2011 Cryptomeria japonica pollen front was monitored by tracking the first day of pollen release using a Durham sampler at 96 sites, and an IS-Rotary sampler at 13 sites distributed from Kyushu to Hokkaido. Results from the Durham sampler showed that, by early February, the pollen front had reached both Tsu in the Mie prefecture, and Mito in the Ibaragi Prefecture. Shortly after, in mid February, the front was observed in wider areas from Kanto, Tokai, the southern area of the Kii Peninsula, the western regions of Chugoku and the northern regions of Kyushu. By late February the front had reached the southern regions of Kyushu, while also moving up-wards to the northern areas of Kinki, the central areas of Chugoku, almost the whole of Shikoku, the northern parts of Chubu and the southern to central regions of the Tohoku districts which face the Pacific Ocean. By early to mid March the front had reached Hokuriku, central Tohoku and, by late March, it had come as far as northern Tohoku and southern Hokkaido. The front finally arrived in the central area of Hokkaido by early April.
2011-06-30