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Aerosols and their relevance to forecasts by the Hungarian Meteorological Service. Tamás Tóth Hungarian Meteorological Service Phone: +36 62/624-042 E-mail: email@example.com. Aerosols. Def. : dispersion of the solid and liquid particles suspended in gas.
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to forecasts by the Hungarian Meteorological Service
Hungarian Meteorological Service
Phone: +36 62/624-042
Def. : dispersion of the solid and liquid particles suspended in gas.
- Soil dust
- Sea salt
- volcanic ash
- botanical debris
Secondary particles are formed by chemical reaction in the air:
-Volatile Organic Compounds such as monoterpenes
Concentrate in industrial areas (mainly in the Northern Hemisphere)
Most important: sulphates originating from the burning of coal and oil
Nitrogen-oxides from transportation
CFCs originating from sprays, fridges
source: http://climatechange.wikispaces.com/5.+Aerosols http://climatechange.wikispaces.com/5.+Aerosols
The atmospheric aerosol has significant influences on our health. They can cause reduced lung functions, increased respiratory symptoms, cardiovascular diseases, irritants for eyes, etc.
Small particles can enter in the deeper parts of the lung (alveoli), where the transfer of O2 and CO2 take place.
Mt. Pinatubo: major eruption in 1991
Droplets of sulfuric acid are spread in the stratosphere by the wind.
They reflect sunlight, reducing solar energy.
At least 0.2-0.3 degrees cooling for years.
After a cold front: cold air settles
Very low temperatureat night with strong ground radiation up to space
Developing low-level inversion
Lack of upstreams
Thickness of boundary layer is absolutely 0!
Stratiform clouds gradually cover the whole Carpathian Basin.
The top of this cloudmass is usually at 600-1000 metres, sometimes at 1500 metres.
Highest peaks tower above the stratus
The inversion layer is slowly lifting;
coldest place near the cloud top
Sunny and at least 5-8 degrees warmer conditions
Very dry air (relative humidity 10-20%), high visibility
Spectacular landscape with ”sea of clouds”