Research performed
at the Synoptic Climatology Lab indicates that there is a distinct seasonal
trend in overnight asthma admissions to New York City hospitals. A
differential inter-seasonal impact of weather, air pollution, and outdoor
allergens on asthma admissions was determined. There is a strong
relationship between asthma admissions and cool, dry weather situations
in fall that are marked by high pressure. Cold and dry winter weather is
also associated with increased admissions. However, in spring and summer,
high concentrations of various air pollutants and outdoor allergens exhibit
a greater effect on admissions than any air mass (or weather situation)
identified. Below can be found an abstract of the article "A Synoptic Evaluation
of Asthma Hospital Admissions in New York City". The full article is not
yet avaliable online, but can be found in the American
Journal of Respiratory & Critical Care Medicine 1997; Vol. 156.
Dr. Laurence S. Kalkstein
Center for Climatic Research
Department of Geography
University of Delaware
Paul F. Jamason
Cecil M. & Ida M. Green Institute of Geophysics & Planetary
Physics
Scripps Institute of Oceanography
La Jolla, CA
Peter J. Gergen
Department of Health
& Human Services, Public Health Service
Agency for Health
Care Policy and Research (AHCPR)
Rockville, MD
American Journal of Respiratory & Critical Care Medicine 1997;Vol. 156
ABSTRACT
An evaluation of weather/asthma
relationships in the New York City Standard Metropolitan
Statistical Area (SMSA)
is developed using a synoptic climatological methodology. This procedure
isolates "air masses,"
or bodies of air that are homogeneous in meteorological character, and
relates them to daily
counts of overnight asthma hospital admissions. The synoptic procedure
used
here, known as the
temporal synoptic index (TSI), can identify air masses in automated fashion
for every day over
many years. It is apparent that certain air masses are related to statistically
significant increases
in asthma hospital admissions. The impact varies seasonally, with weather
having a particularly
important impact on asthma admissions during fall and winter. It appears
that air pollution
has little impact on asthma during these two seasons, and the air masses
associated with the
highest admissions are not distinguished by high concentrations of pollutants.
However, during the
spring and summer, the air masses associated with highest admissions are
among those with high
pollution concentrations. There is a strong interseasonal differential
response to weather
and air pollution by asthmatics in New York City. If these results can
be
replicated at other
locations in future studies, it may be possible to develop and asthma/weather
watch warning system,
based on the expected arrival of high admissions air masses.
Copyright
© University of Delaware, 2000
January.
Synoptic
Climatology Lab
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