DOI: 10.1016/j.atmosenv.2014.12.043
Scopus记录号: 2-s2.0-84920903868
论文题名: Variation of radiative forcings and global warming potentials from regional aviation NOx emissions
作者: Skowron A ; , Lee D ; S ; , De León R ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 104 起始页码: 69
结束页码: 78
语种: 英语
英文关键词: Aviation
; GWP
; Nitrogen oxides
; Non-linearities
; Regional emissions
Scopus关键词: Atmospheric radiation
; Aviation
; Global warming
; Nitrogen oxides
; Particulate emissions
; Emission pattern
; Global chemistry transport model
; Global emissions
; Global warming potential
; GWP
; Ozone production
; Radiative forcings
; Southeast Asia
; Aircraft
; nitrous oxide
; ozone
; aircraft emission
; atmospheric pollution
; emission inventory
; global warming
; nitrogen oxides
; nonlinearity
; ozone
; radiative forcing
; radioactivity
; aircraft
; Article
; aviation
; biomass
; greenhouse effect
; nitrous oxide emission
; Northern Hemisphere
; priority journal
; radiative forcing
; Southern Hemisphere
; stratosphere
; troposphere
; Atlantic Ocean
; Atlantic Ocean (North)
; Brazil
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The response to hemispherical and regional aircraft NOx emissions is explored by using two climate metrics: radiative forcing (RF) and Global Warming Potential (GWP). The global chemistry transport model, MOZART-3 CTM, is applied in this study for a series of incremental aircraft NOx emission integrations to different regions. It was found that the sensitivity of chemical responses per unit emission rate from regional aircraft NOx emissions varies with size of aircraft NOx emission rate and that climate metric values decrease with increasing aircraft NOx emission rates, except for Southeast Asia. Previous work has recognized that aircraft NOx GWPs may vary regionally. However, the way in which these regional GWPs are calculated are critical. Previous studies have added a fixed amount of NOx to different regions. This approach can heavily bias the results of a regional GWP because of the well-established sensitivity of O3 production to background NOx whereby the Ozone Production Efficiency (OPE) is greater at small background NOx. Thus, even a small addition of NOx in a clean-air area can produce a large O3 response. Using this 'fixed addition' method of 0.035Tg(N) yr-1, results in the greatest effect observed for North Atlantic and Brazil, ~10.0mWm-2/Tg(N) yr-1. An alternative 'proportional approach' is also taken that preserves the subtle balance of local NOx-O3-CH4 systems with the existing emission patterns of aircraft and background NOx, whereby a proportional amount of aircraft NOx, 5% (N) yr-1, is added to each region in order to determine the response. This results in the greatest effect observed for North Pacific that with its net NOx RF of 23.7mWm-2/Tg(N) yr-1 is in contrast with the 'fixed addition' method. For determining regional NOx GWPs, it is argued that the 'proportional' approach gives more representative results. However, a constraint of both approaches is that the regional GWP determined is dependent on the relative global emission pattern, so if that changes in the future, the regional NOx GWP will change. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81953
Appears in Collections: 气候变化事实与影响
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作者单位: Dalton Research Institute, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, United Kingdom
Recommended Citation:
Skowron A,, Lee D,S,et al. Variation of radiative forcings and global warming potentials from regional aviation NOx emissions[J]. Atmospheric Environment,2015-01-01,104