Volcanic Ash – Effects on Air Quality
Air quality monitors from the Health Surveillance Authority have shown a slight increase in particulate matter which, according to information from the Icelandic Meteorological Institute, is volcanic ash, as indicated by measurements of fine particulate matter that has travelled across the country.
We are closely monitoring air quality.
Air quality monitors from the Health Surveillance Authority have shown a slight increase in particulate matter which, according to information from the Icelandic Meteorological Institute, is volcanic ash, as indicated by measurements of fine particulate matter that has travelled across the country.
Volcanic smog contains pollution that has managed to transform, among other things, into SO4 (sulphate) and sulphurous acid and is therefore not detected by conventional measurements of sulphur dioxide (SO2) but measurements of fine particulate matter indicate that this pollution is present. Volcanic smog is air pollution that is formed when SO2, other gases and particles react with oxygen and moisture in the presence of sunlight. It has a characteristic bluish-grey colour, which is created when sunlight refracts on the particles/aerosol.
Physical symptoms
Volcanic ash can cause fatigue, headaches, irritation in the eyes and throat, as well as flu-like symptoms. Those with respiratory sensitivities, and children, should avoid being outdoors for extended periods and limit exertion. Those who are less sensitive may also experience symptoms. It is not recommended to let young children sleep outdoors in a pram in these conditions.
General recommendations regarding gas pollution are as follows:
- Patients with lung and heart conditions should have their medication readily available.
- Breathe as much as possible through your nose and avoid physical exertion outdoors in heavy pollution, as this reduces the concentration that reaches the lungs.
- Staying indoors with closed windows and the air conditioning switched off provides significant protection from the pollution.
- Please note that dust masks provide no protection against gas pollution.
- Measures to protect SO2 and other indoor pollution:
- Close the windows and minimise traffic at the front door.
- Turn up the heating in the house.
- Air out as soon as the air quality improves outdoors.
Air quality measurements can be found at Air quality.is and likewise, more detailed measurements can be found on the page. of the health inspectorate but more detailed instructions on how to respond to SO concentrations2 can be obtained by clicking on the link in the left-hand corner of the page: Air quality.is.
Forecasts for gas pollution can be seen on the Met Office website