Fig. 10 Spatiotemporal analysis—impact NECA, monthly approach. Average monthly proportional difference of NO2 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).
ARTICLE COMMUNICATIONS EARTH & ENVIRONMENT | https://doi.org/10.1038/s43247-023-01050-7
10 COMMUNICATIONS EARTH & ENVIRONMENT | (2023) 4:391 | https://doi.org/10.1038/s43247-023-01050-7 | www.nature.com/commsenv