Maritime NO_x Emissions Over Chinese Seas Derived From Satellite Observations

Maritime NO_x Emissions Over Chinese Seas Derived From Satellite Observations

Ding, J. (TU Delft Atmospheric Remote Sensing; Royal Netherlands Meteorological Institute (KNMI))
Johannes Van Der A, Ronald (Royal Netherlands Meteorological Institute (KNMI))
Mijling, B (Royal Netherlands Meteorological Institute (KNMI))
Jalkanen, J. P. (Finnish Meteorological Institute (FMI))
Johansson, L (Finnish Meteorological Institute (FMI))
Levelt, Pieternel Felicitas (TU Delft Atmospheric Remote Sensing; Royal Netherlands Meteorological Institute (KNMI))

2018-02-28

By applying an inversion algorithm to NO_x satellite observations from Ozone Monitoring Instrument, monthly NO_x emissions for a 10 year period (2007 to 2016) over Chinese seas are presented for the first time. No effective regulations on NO_x 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.

air pollution
NO emissions
shipping

http://resolver.tudelft.nl/uuid:7f7528b7-e402-444e-ad31-270259038743

https://doi.org/10.1002/2017GL076788

0094-8276

Geophysical Research Letters, 45 (4), 2031-2037

Institutional Repository

journal article

© 2018 J. Ding, Ronald Johannes Van Der A, B Mijling, J. P. Jalkanen, L Johansson, Pieternel Felicitas Levelt