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＜紀要論文＞
Analysis of the Seasonal Variation in Atmospheric NH_3 over East Asia
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| 概要 | Atmospheric ammonia (NH_3) plays an important role in the formation and understanding of secondary inorganic aerosols, but has not been examined using chemical transport models (CTMs) and atmospheric ...levels have not been compared with satellite observations. Here, we analyzed the seasonal variation in atmospheric NH_3 using long-term hourly NH_3/NH_4^+ measurements made at the Chikushi Campus of Kyushu University in Fukuoka, nationwide filter pack (FP) network observations over Japan, GEOS-Chem CTM results, and Infrared Atmospheric Sounding Interferometer (IASI) satellite retrievals over East Asia. We found that the IASI NH_3 retrieval over central and north China had a strong correlation with the CTM results (R = 0.74). There was a similar correlation over south China, but the IASI NH_3 retrieval was only 48% of the CTM value. CTM results over Japan reproduced the major seasonal variations compared with surface observations, but IASI observations over Japan were below or near the detection limit and it was difficult to obtain a reasonable correlation with measurements.続きを見る |
| 目次 | 1.Introduction 2.Observations 3.Numerical Model and Emission Inventory 4.Results and Discussion 5.Conclusions |
詳細
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| 登録日 | 2018.05.08 |
| 更新日 | 2023.02.27 |