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Impact of future subsonic aircraft NO x emissions on the atmospheric composition
Author(s) -
Grewe Volker,
Dameris Martin,
Hein Ralf,
Köhler Ines,
Sausen Robert
Publication year - 1999
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1998gl900249
Subject(s) - environmental science , atmospheric sciences , greenhouse gas , atmosphere (unit) , ozone , atmospheric composition , perturbation (astronomy) , climate change , atmospheric model , altitude (triangle) , atmosphere of earth , atmospheric models , meteorology , physics , geology , oceanography , geometry , mathematics , quantum mechanics
The effect of future subsonic aircraft emissions on the chemical composition of the atmosphere is investigated by means of the coupled dynamic‐chemical circulation model ECHAM3/CHEM. Present (1992) and future (2015 and 2050) atmospheric compositions are simulated with three sets of time slice experiments. Expected changes of the sea surface temperatures (SST), surface emissions of CFCs, greenhouse gases (GHG), and NO x (=NO+NO 2 ) are prescribed. Model results show future increases in NO x and O 3 due to aircraft NO x emissions, which scale almost linearily with the magnitude of the emission. The calculated climate change reduces the NO x concentration as well as its increase due to aircraft emissions by more than 10% at flight altitude in 2015. However, the aircraft induced ozone perturbation decreases only slightly when climate change is regarded.