Importance of Long-Range Nitrate Transport Based on Long-Term Observation and Modeling of Dust and Pollutants over East Asia
| العنوان: | Importance of Long-Range Nitrate Transport Based on Long-Term Observation and Modeling of Dust and Pollutants over East Asia |
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| المؤلفون: | Itsushi Uno, Xiaole Pan, Keiya Yumimoto, Syuichi Itahashi, Tomoaki Nishizawa, Shigekazu Yamamoto, Yukari Hara, Zhe Wang, Kazuo Osada |
| المصدر: | Aerosol and Air Quality Research. 17:3052-3064 |
| بيانات النشر: | Taiwan Association for Aerosol Research, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Pollutant, 010504 meteorology & atmospheric sciences, Chemical transport model, Asian Dust, Range (biology), 010501 environmental sciences, complex mixtures, 01 natural sciences, Pollution, Aerosol, Nitrate transport, Climatology, Environmental Chemistry, Environmental science, East Asia, Outflow, 0105 earth and related environmental sciences |
| الوصف: | Long-term synergetic fine and coarse mode aerosol observations were analyzed at 1-h intervals at Fukuoka, Japan, from January to June 2015. The GEOS-Chem chemical transport model, including dust and sea-salt acid uptake processes, was used for detailed analysis of observation data. Several Asian dust events and long-range anthropogenic aerosol transport events were observed during our analysis period, and the numerical model generally explained the observed time variation for both fine and coarse mode aerosols. We found that (i) the majority of fine mode NO3– can be considered as long-range transport (LRT) outside of Japan during the cold season, and (ii) the peak timing of fine mode NO3– coincided with that of SO4–, indicating that both aerosols are controlled by LRT. Also, an observed mass concentration ratio of NO3–/SO42– > 0.9 occurred during the cold season, indicating the importance of NO3– as a major contributor to the PM2.5 mass fraction. Finally, we clearly showed that large-scale dust-nitrate outflow from China to Fukuoka was confirmed in all cases of dust events, indicating that the anthropogenic NOx is converted to dust-nitrate and transported to Japan with dust. These results demonstrate the importance of anthropogenic NO3– LRT during the cold season and dust-nitrate LRT for all dust events (even in June). |
| تدمد: | 2071-1409 1680-8584 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::44c24b8af5fa14108d604bfe51493690 https://doi.org/10.4209/aaqr.2016.11.0494 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........44c24b8af5fa14108d604bfe51493690 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20711409 16808584 |
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