[Relationship between birch pollen counts and meteorological factors for 8 years in Sapporo].
Occurrence of airborne pollen in Sapporo was studied for the 8 years between 1995 and 2002. Observations on pollen seasons of cedar, birch, grass, and mugwort are presented. There are wide year-to-year variations in quantities of birch pollens. Simple linear regression by the least squares method was used for studying correlations between annual quantities of birch pollen and the meteorological factors. A highly significant (P = 0.00004) positive correlation was found between precipitation in February of the preceding year and annual birch pollen concentrations with the coefficient of determination, R2 = 0.950. These results suggest that atmospheric birch pollen counts can be predicted from the meteorological factor in the preceding year.
Shirasaki
Hideaki
H
Department of Otolaryngology, School of Medicine, Sapporo Medical University, Sapporo.
Narita
Shin-ichirou
S
Watanabe
Kazumasa
K
Kanaizumi
Etsuko
E
Satoh
Jun
J
Konno
Nobuhiro
N
Ogasawara
Hideki
H
Yamamoto
Tetsuo
T
Asakura
Kohji
K
Kataura
Akikatsu
A
Himi
Tetsuo
T
D000393:Air Pollutants / Q000032:analysis*; D029662:Betula; D005544:Forecasting / Q000379:methods; D007564:Japan; D008685:Meteorological Concepts; D011058:Pollen; D012621:Seasons; D013997:Time Factors
D000393:Air Pollutants