ARTICLE 
COMMUNICATIONS EARTH & ENVIRONMENT | https://doi.org/10.1038/s43247-023-01050-7 
. NO: monthly Eegportional difference (%) 
ür | 
rojection WGS84 
{c} ODN-RBINS 2027 
NO. manthiv naranartional mmararı 
—r Km 
„ection WGS84 - UT 
A OANM_.RaI nn»? 
Fig. 10 Spatiotemporal analysis—impact NECA, monthly approach. Average monthly proportional difference of NO» VCD levels between the years 
before (2018-2020) and after (2021-2022) the NECA implementation for the North Sea ECA (A) and the Baltic Sea ECA (omitting December) (B). 
COMMUNICATIONS EARTH & ENVIRONMENT | (2023)4:391 | https: //doi.0rg/10.1038/s43247-023-01050-7 | www.nature.com/commsenv