Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-3785-2017 |
A new time-independent formulation of fractional release | |
Ostermoeller, Jennifer1; Boenisch, Harald2; Joeckel, Patrick3; Engel, Andreas1 | |
2017-03-20 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | The fractional release factor (FRF) gives information on the amount of a halocarbon that is released at some point into the stratosphere from its source form to the inorganic form, which can harm the ozone layer through catalytic reactions. The quantity is of major importance because it directly affects the calculation of the ozone depletion potential (ODP). In this context time-independent values are needed which, in particular, should be independent of the trends in the tropospheric mixing ratios (tropospheric trends) of the respective halogenated trace gases. For a given atmospheric situation, such FRF values would represent a molecular property. We analysed the temporal evolution of FRF from ECHAM/MESSy Atmospheric Chemistry (EMAC) model simulations for several halocarbons and nitrous oxide between 1965 and 2011 on different mean age levels and found that the widely used formulation of FRF yields highly time-dependent values. We show that this is caused by the way that the tropospheric trend is handled in the widely used calculation method of FRF. Taking into account chemical loss in the calculation of stratospheric mixing ratios reduces the time dependence in FRFs. Therefore we implemented a loss term in the formulation of the FRF and applied the parameterization of a "mean arrival time" to our data set. We find that the time dependence in the FRF can almost be compensated for by applying a new trend correction in the calculation of the FRF. We suggest that this new method should be used to calculate time-independent FRFs, which can then be used e.g. for the calculation of ODP. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397932200001 |
WOS关键词 | OZONE DEPLETION POTENTIALS ; IN-SITU MEASUREMENTS ; AGE ; MODEL ; TRANSPORT ; AIR ; SF6 ; CO2 |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30733 |
专题 | 地球科学 |
作者单位 | 1.Goethe Univ Frankfurt, Inst Atmospher & Environm Sci, Frankfurt, Germany; 2.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Karlsruhe, Germany; 3.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Phys Atmosphare, Oberpfaffenhofen, Germany |
推荐引用方式 GB/T 7714 | Ostermoeller, Jennifer,Boenisch, Harald,Joeckel, Patrick,et al. A new time-independent formulation of fractional release[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(6). |
APA | Ostermoeller, Jennifer,Boenisch, Harald,Joeckel, Patrick,&Engel, Andreas.(2017).A new time-independent formulation of fractional release.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(6). |
MLA | Ostermoeller, Jennifer,et al."A new time-independent formulation of fractional release".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.6(2017). |
条目包含的文件 | 条目无相关文件。 |
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