The Effect of Local Temperature, Wind Velocity and Rain On Aerobiology Sampling; Ten Year Study (2001-2011), Sarasota, Fl

Gregory Michael Cowan, Neetu Talreja, Jennifer E. Fergeson, Mary Jelks, Dennis K. Ledford, Richard F. Lockey



Pollen and fungal spores are associated with atmospheric bio-pollution and trigger allergic respiratory diseases in sensitive individuals; little is known about alterations in weather patterns and its effect on pollen and fungal spores.


Ragweed, cedar, oak, grasses, Alternaria and Cladosporium were sampled daily between January 2001 to December 2011 in Sarasota, Fl using a Burkard volumetric trap. The same person (MJ) identified the pollen and fungal spores based upon morphological structure. Weather data for Sarasota were obtained from the National Climatic Data Center. Daily averages of temperature, rain and wind speed were used to investigate alterations in pollen and fungal spore concentrations in relation to meteorological parameters. Linear multivariate regression analysis, with meteorological parameters as independent variables, was used for statistical analysis.


Ragweed, cypress, grasses, Alternaria and Cladosporium were positively associated with increased temperatures. Oak was negatively related to increased temperatures. Ragweed and grasses were negatively associated with rain and wind velocity. Alternaria and Cladosporium were positively related to wind velocity (p <0.05 for all observations).


These observations indicate that weather patterns affect pollen and fungal spore counts.

Journal of Allergy and Clinical Immunology, Vol. 131, Issue 2, AB79

abstract No: 

    • AAAAI 2013 (69th)