Seasonal and daily cycles of a pollen cloud on the south of western Siberia

Content of a pollen atmospheric aerosol component in the air has been studied in 1995-1998 during a vegetative period using the Institute's roof as observation site. The seasonal variations in the pollen content in the air were observed using horizontal sticky glasses exposed for 24 hrs. The data obtained show that the entire vegetative period in Novosibirsk can be conditionally divided into three stages: the blossoming of wooden plants - ingress of the main mass of pollen grains into the atmosphere: cereal blossoming; and grass blossoming.