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Evaluation of the performance of the Dutch National Air Quality Monitoring Network in 1993

Evaluatie van het functioneren van het Landelijk Meetnet Luchtkwaliteit in 1993

Synopsis

In this report the results of an evaluation of the technical performance of the Dutch National Air Quality Monitoring Network in 1993 are presented.The average brute component efficiencies, i.e. a measure for the availability of measuring data, are: - for the automatically measured gaseous components [NH3, CO, NOx, O3, SO2]: 95,7% ; - for the automatic fine dust measurements: 86,0% ; - for the meteorological parameters [global radiation, relative humidity, temperature, wind direction, wind speed]: 98,0% ; - for aerosols etc. [black smoke, acidifying compounds, metals, tsp] 97,2% ; - for the chemical composition of precipitation [i.a. acidifying compounds, heavy metals] 100%. Current Dutch legislation requires the measurement of a number of components in such way that only a minimal loss of data is tolerated. The number of stations which did not meet the legal requirements in 1993 are: three for CO [14% of the total number of stations], thirteen for NO2 [28%], nine for SO2 [13%], zero for lead aerosol [0%] and 5 for black smoke [31%].
 

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