GRASS-POLLEN IN THE ATMOSPHERE OF MELBOURNE - SEASONAL DISTRIBUTION OVER 9 YEARS

Abstract

Both the seasonal and diurnal incidence of grass pollen in the atmosphere of Melbourne have been established using data from seven pollen seasons (1975-1980 and 1991-1993). Grass pollen represented an average of 26% (ranging from 22 to 33.1%) of the total pollen count. November and December are the most important months with an average of 81% of the total grass pollen. There is marked variation in the total seasonal and daily grass pollen counts. The total seasonal grass pollen count varied from 2319 to 6798 grains, while the daily grass pollen count fluctuated from 0 to 549 grains m-3 of air. In this study, we arbitrarily assigned days during the grass pollen season with > 100 grains m-3 of..