English Abstract Ozone [O3] and nitrogen oxides [NO, NO2, NOx] have been
monitored since 1977 in the Dutch National Air Quality Monitoring Network.
Necessary replacement of the old monitoring systems urged the Ministry of
the Environment to request the Laboratory for Air Research to make proposals
for new network configurations for the monitoring of ozone and nitrogen
oxides. This report gives an elucidation of the mainly qualitative
considerations taken into account in the definition of the new
configurations. These considerations included i.a. alert and control
function in relation to photochemical smog and support of models. The
revised networks consist of 29 regional stations, 5 city background
stations, 13 street stations and one additional station for nitrogen oxides
and 26, 5, 7 and 1 resp. for ozone. The revised versions of the networks
will be fully implemented in the course of 1992.
