Spatial distribution of emissions to air - the SPREAD model
Spatial distribution of emissions to air - the SPREAD model
Spatial distribution of emissions to air - the SPREAD model
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SNAP codes are set up in three levels (ETC/AEM – CITEPA, 1996):<br />
• SNAP 1 level refers <strong>to</strong> <strong>the</strong> upper level covering 11 source categories <strong>of</strong><br />
which 9 are used in <strong>the</strong> Danish inven<strong>to</strong>ry system as agriculture are<br />
treated on NFR categories and natural sources as not occurring.<br />
• SNAP 2 level refers <strong>to</strong> <strong>the</strong> intermediate level covering 77 sub-source<br />
categories. The intermediate level mainly reflects technological criteria.<br />
• SNAP 3 level refers <strong>to</strong> <strong>the</strong> lower level and covers 375 source activities.<br />
The lower level aims <strong>to</strong> structure sources and sinks <strong>to</strong> achieve homogeneous<br />
sections according <strong>to</strong> emission generation. Fur<strong>the</strong>r, <strong>the</strong> lower<br />
level aims <strong>to</strong> give an exhaustive enumeration <strong>of</strong> sources and sinks in<br />
detail.<br />
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