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نوع الوثيقة |
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مقال في مجلة دورية |
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عنوان الوثيقة |
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تأثير الإنبعاثات الأولية على تركيز المواد غير العضوية المتوقعة باستخدام النموذج الكيميائي والضوئي البريطاني The effect of varying primary emissions on the concentrations of inorganic aerosols predicted by the enhanced UK Photochemical Trajectory Model |
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الموضوع |
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علوم البيئة |
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لغة الوثيقة |
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الانجليزية |
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المستخلص |
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An enhanced Photochemical Trajectory Model (PTM) has been used to simulate concentrations of secondary inorganic aerosol (for the purposes of this work, sulphate, nitrate, chloride and ammonium) in PM10 over a two-month period at a rural site in central southern England (Harwell). judged against a base year of 2007, emissions of precursor gases, SO2, NOx and NH3 have been varied over plausible ranges, occurring across the UK only, mainland Europe only, or the whole of Europe. The model is able to reproduce observed non-linearities and shows that abatement is less than proportional in all cases. Additionally, abatement of sulphur dioxide leads to increased nitrate concentrations. The combination of a weak response of nitrate to reductions in NOx emissions, and the effect of sulphur dioxide reductions in increasing nitrate is consistent with the very small recent observed trends in nitrate concentrations over the UK. A scenario for 2020 in which emissions of SO2, NOx and NH3 fall to 64%, 75% and 96% respectively of their 2007 baseline levels across the whole of Europe shows a reduction of 2 mu g m(-3) in secondary inorganic aerosol which is 13% below the baseline case for a two month period in 2007, due mostly to a fall in sulphate and ammonium. As this was a relatively high pollution period, it is estimated that over a full year, the reduction is more likely to be around 1 mu g m(-3). |
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ردمد |
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1352-2310 |
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اسم الدورية |
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ATMOSPHERIC ENVIRONMENT |
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المجلد |
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69 |
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العدد |
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1 |
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سنة النشر |
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1434 هـ
2013 م |
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نوع المقالة |
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مقالة علمية |
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تاريخ الاضافة على الموقع |
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Monday, June 3, 2013 |
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الباحثون
| Roy M. Harrison | Harrison, Roy M. | باحث | | r.m.harrison@bham.ac.uk |
| Alan M. Jones | Jones, Alan M. | باحث | | |
| David C. S. Beddows | Beddows, David C. S. | باحث | | |
| Richard G. Derwent | Derwent, Richard G. | باحث | | |
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الملفات
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35608.pdf
| pdf | The effect of varying primary emissions on the concentrations of inorganic aerosols predicted by the enhanced UK Photochemical Trajectory Model |
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