Aonitoring NÖNcompliance 
NO, - EF for measured ship plumes from 2014 to 
2020 in Wedel, Bremerhaven and Kiel (n=45346) 
8000 
LA 
FF 
u 
—_ 
6000 - 
) 
F 
w 
m 
} 
4000 - 
4 
5 
3 2000 - 
nn 
E 
> 
Pa 
fr 
1500 rom 
50 rom ' 
Tier | (from 2000’ 
fer Il (from 201. 
m 
y 
Tier Ill (from 2021, 
n 
. tn ; 
© © © © © © © © © © © © OO © © © 
a NM sr U WO CO ©) © — N 8 <sr' un mn 
/ — —. — — — — A 
NO, emission factor [g/kg fuel] 
CE 
20 
= 
= 15 
— 
‚Do 
10 
£ 
Go‘ > 
Wi 
0 
l 
"ar 
‚48er Ih 
O0 500 1000 1500 2000 2500 
Rated engine speed [rpm] 
NO, limit > NO, - EF 
[g/kg fuel] 
(specific fuel consumption: 
180-230 g/kWh)