期刊
ATMOSPHERIC ENVIRONMENT
卷 95, 期 -, 页码 468-479出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2014.06.049
关键词
Aircraft NOx emissions; Chemical impact; Radiative forcing; Multimodel comparison; Contrail avoiding measures
资金
- EU [ACP8-GA-2009-233772]
The atmospheric impact of aircraft NOx emissions are studied using updated aircraft inventories for the year 2006, in order to estimate the photochemistry-related mitigation potential of shifting cruise altitudes higher or lower by 2000 ft. Applying three chemistry-transport models (CTM) and two climate-chemistry models (CCM) in CTM mode, all including detailed tropospheric and stratospheric chemistry, we estimate the short-lived radiative forcing (RF) from O-3 to range between 16.4 and 23.5 mW m(-2), with a mean value of 19.5 mW m(-2). Including the long-lived RF caused by changes in CH4, the total NOx-related RF is estimated to about 5 mW m(-2), ranging 1-8 mW m(-2). Cruising at 2000 ft higher altitude increases the total RF due to aircraft NOx emissions by 2 +/- 1 mW m(-2), while cruising at 2000 ft lower altitude reduces RF by 2 +/- 1 mW m(-2). This change is mainly controlled by short-lived O-3 and show that chemical NOx impact of contrail avoiding measures is likely small. (C) 2014 The Authors. Published by Elsevier Ltd.
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