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Related Experiment Videos

Thunderstorm asthma.

Philip E Taylor1, Haflidi Jonsson

  • 1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA. taylor@caltech.edu

Current Allergy and Asthma Reports
|July 31, 2004
PubMed
Summary
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Thunderstorms can trigger asthma epidemics by rupturing grass pollen into smaller, allergenic particles. These airborne allergens are then distributed by thunderstorm outflows, leading to asthma attacks in susceptible individuals.

Area of Science:

  • Environmental Science
  • Allergy and Immunology
  • Meteorology

Background:

  • Epidemics of asthma are frequently associated with thunderstorms, particularly during grass flowering seasons.
  • The underlying mechanisms linking thunderstorms to asthma exacerbations remain poorly understood.
  • Pollen physiology and atmospheric conditions suggest pollen rupture may play a role.

Purpose of the Study:

  • To investigate the potential mechanisms by which thunderstorms contribute to asthma epidemics.
  • To explore the role of pollen rupture and atmospheric transport in thunderstorm-related asthma events.

Main Methods:

  • Analysis of pollen physiology and its response to environmental conditions.
  • Examination of meteorological data associated with thunderstorms, including downdrafts and outflows.

Related Experiment Videos

  • Hypothesizing the entrainment and rupture of grass pollen within thunderstorm systems.

    • Main Results:

    • Thunderstorm weather systems, characterized by strong downdrafts and dry outflows, likely enhance grass pollen rupture.
    • Airborne, respirable-sized pollen fragments are transported to ground level and distributed by outflows.
    • These conditions can lead to a rapid increase in airborne pollen allergens, potentially triggering asthma.

    Conclusions:

    • Thunderstorm-induced pollen rupture is a plausible mechanism for asthma epidemics during grass pollen seasons.
    • The distribution of fine pollen allergens by thunderstorm outflows can expose susceptible individuals to high concentrations.
    • Further research is warranted to confirm the direct impact of thunderstorm-generated pollen allergens on asthma exacerbations.