Maritime NO<sub>x</sub> Emissions Over Chinese Seas Derived From Satellite Observations

Journal article (2018)

Authors

J. Ding Royal Netherlands Meteorological Institute (KNMI), Atmospheric Remote Sensing - CEG
R. van der A Royal Netherlands Meteorological Institute (KNMI)
B Mijling Royal Netherlands Meteorological Institute (KNMI)
J. P. Jalkanen Finnish Meteorological Institute (FMI)
L Johansson Finnish Meteorological Institute (FMI)
Pieternel Felicitas Levelt Royal Netherlands Meteorological Institute (KNMI), Atmospheric Remote Sensing - CEG
Research Group
Atmospheric Remote Sensing (CEG) (TU Delft)
Copyright: © 2018 J. Ding, Ronald Johannes Van Der A, B Mijling, J. P. Jalkanen, L Johansson, Pieternel Felicitas Levelt
DOI
help_outline
https://doi.org/10.1002/2017GL076788
Shipping Air pollution NO emissions
More Info
expand_more

Published Date

28-02-2018

Language

English

Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Atmospheric Remote Sensing

Abstract

By applying an inversion algorithm to NOx satellite observations from Ozone Monitoring Instrument, monthly NOx emissions for a 10 year period (2007 to 2016) over Chinese seas are presented for the first time. No effective regulations on NOx emissions have been implemented for ships in China, which is reflected in the trend analysis of maritime emissions. The maritime emissions display a continuous increase rate of about 20% per year until 2012 and slow down to 3% after that. The seasonal cycle of shipping emissions has regional variations, but all regions show lower emissions during winter. Simulations by an atmospheric chemistry transport model show a notable influence of maritime emissions on air pollution over coastal areas, especially in summer. The satellite-derived spatial distribution and the magnitude of maritime emissions over Chinese seas are in good agreement with bottom-up studies based on the Automatic Identification System of ships.