Updates: 12.02.2021 08:06
Ostrava – Dispersion conditions in the Moravian-Silesian Region have improved. Measured concentrations of PM10 airborne dust in the air have dropped to or below the limit value of 50 micrograms per cubic meter since Thursday at all stations. This follows from the information of the Czech Hydrometeorological Institute (CHMI).
On Thursday morning, the average daily concentrations of dust aerosol in the region were doubled, at some measuring stations even threefold. However, meteorologists have announced that the scattering conditions will improve. This morning was the worst situation in Dolní Lutyň-Věřňovice in the Karviná region, where in the morning the station showed an average daily concentration of airborne dust of 73 micrograms per cubic meter.
“Scattering conditions will be good,” meteorologists said today. However, the average twenty-four-hour concentrations of dust aerosol will sometimes exceed the limit value.
The deteriorating air quality in the region, which has long been the worst in the country, is due to industrial enterprises, transport and local heating. The problems are in the heating season. The location of the region near Poland also plays a role, from where, according to experts, pollution also goes to the Czech Republic due to weather conditions. It is the measuring stations near the Polish border that now show the highest concentrations of dust aerosol.
Last year, for example, air quality in Ostrava, for example, was the best in the history of measurements, ie in the mid-1990s, when comparable data have been available. The improvement in air was helped by favorable weather, but also by a decline in economic activity and less traffic in connection with the coronavirus pandemic.
Average 24-hour concentration of PM10 airborne dust at selected measuring stations (in micrograms per cubic meter):
|Measuring station||Wednesday, February 10 at 2:00 p.m.||Thursday 11 February at 07:00||Thursday, February 11 at 2:00 p.m.||Friday, February 12, at 6:00 AM|
The dispersion conditions in the Zlín Region are good again
The dispersion conditions in the Zlín Region are good again. Daily concentrations of airborne dust did not exceed the limit value of 50 micrograms per cubic meter at any of the six stations in the region that monitor the value this morning. On Thursday afternoon, the limit was exceeded at all, on Wednesday afternoon more than doubled. This follows from data published by the Czech Hydrometeorological Institute (CHMI).
According to the CHMI, the dispersion conditions in the Zlín Region were good this morning and it should remain so during the day. “We do not expect significant changes in concentrations,” meteorologists said in the outlook today.
The limit value for airborne dust has been exceeded at stations in the region since Tuesday; on Thursday, dispersion conditions began to improve significantly. Today at 07:00 the measured average value in 24 hours in Valašské Meziříčí reached 34.3 micrograms per cubic meter. At the same time, it was 26.2 micrograms in Uherské Hradiště, 24.8 micrograms at the station below the Jižní Svahy housing estate in Zlín, 22.8 micrograms at the station in Kvítková Street in Zlín, 22.6 micrograms in Kroměříž – Těšnovice and in Otrokovice in the Zlín region. 16.5 micrograms.
According to experts, people should reduce physical exertion outside and only ventilate briefly in poor dispersal conditions. Motorists are advised to consider the need for every ride. Children, the sick and the elderly should limit their stay outdoors, other sports and their stay in smoky areas. It is also advisable to strengthen the immune system by supplying vitamins.
Average 24-hour concentration of PM10 airborne dust at measuring stations (in micrograms per cubic meter):
|Measuring station||Wednesday, February 10 at 7:00 AM||Wednesday, February 10 at 3:00 p.m.||Thursday, February 11, at 7:00 AM||Thursday, February 11 at 3:00 p.m.||Friday, February 12, at 7:00 AM|
|Kroměříž – Těšnovice||96,1||116,7||101,9||67,3||22,6|
|Zlín – Kvítková||113,7||115,2||96,8||69,1||22,8|
Source: České noviny – hlavní události by www.ceskenoviny.cz.
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