Maritime NOx Emissions Over Chinese Seas Derived From Satellite Observations

Maritime NOx Emissions Over Chinese Seas Derived From Satellite Observations 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geophysical Research Letters Wiley

Maritime NOx Emissions Over Chinese Seas Derived From Satellite Observations

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
©2018. American Geophysical Union. All Rights Reserved.
ISSN
0094-8276
eISSN
1944-8007
D.O.I.
10.1002/2017GL076788
Publisher site
See Article on Publisher Site

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.

Journal

Geophysical Research LettersWiley

Published: Jan 28, 2018

Keywords: ; ;

References

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