Aerobiology Network
This document describes the logistics of the Airborne
Allergen Network, a network of pollen monitoring stations
operating in the United States. This network consists of a
group of voluntary agencies coordinated and directed by
SDI.
Purpose and Objectives
The purpose of the Airborne Allergen Network is to
monitor atmospheric pollen conditions in the United
States. Data obtained by members of the network are
used to understand the timing of pollen events in various
parts of the country and to characterize the types of
pollen found in member cities.
Monitoring Sites
Monitoring sites are generally allergy clinics or teaching
hospitals. Other agencies interested in air quality may
also apply for membership.
Monitoring Equipment
Monitoring sites operate a Rotorod sampler. Samples are
collected in the standard manner, where the prescribed
parameters are:
- Intermittent operation, generally using a 10%
duty cycle
- Samples collected daily, 24 hours per sample, except
for weekend samples (Friday through Monday, 72
hours)
Samples collected during the pollen season (at least 7
months, but as many as 12 months in some southern
cities).
Sample Evaluation
Samples (collector rods) are evaluated by technicians at
each monitoring site with a light microscope (bright field)
according to a protocol supplied by SDI. The protocol
allows sample analysis in approximately 30 minutes each
day, regardless of the number of pollen grains recovered
from the atmosphere.
Providing of Data
Each monitoring site forwards pollen counts to SDI.
Sampler Calibration
The Rotorod sampler requires calibration annually to
verify proper performance. This procedure is generally
performed during the winter or during the pollen season if
the sampler appears to be performing poorly.
Use of Data
Network members are not restricted in the ways that
they may use the pollen data they collect. Sharing
pollen information with patients and the local media are
acceptable uses of the data.
For more information, please contact us.
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