Climate Change Data Portal
| DOI | 10.5194/acp-18-4617-2018 |
| Chemical characterization of long-range transport biomass burning emissions to the Himalayas: Insights from high-resolution aerosol mass spectrometry | |
| Zhang X.; Xu J.; Kang S.; Liu Y.; Zhang Q. | |
| 发表日期 | 2018 |
| ISSN | 16807316 |
| 卷号 | 18期号:7 |
| 英文摘要 | An intensive field measurement was conducted at a remote, background, high-altitude site (Qomolangma Station, QOMS, 4276 m a.s.l.) in the northern Himalayas, using an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) along with other collocated instruments. The field measurement was performed from 12 April to 12 May 2016 to chemically characterize the high time-resolved submicron particulate matter (PM1) and obtain the dynamic processes (emissions, transport, and chemical evolution) of biomass burning (BB), frequently transported from South Asia to the Himalayas during pre-monsoon season. Overall, the average (±1σ) PM1 mass concentration was 4.44 (±4.54) μg mĝ'3 for the entire study, which is comparable with those observed at other remote sites worldwide. Organic aerosol (OA) was the dominant PM1 species (accounting for 54.3 % of total PM1 on average) followed by black carbon (BC) (25.0 %), sulfate (9.3 %), ammonium (5.8 %), nitrate (5.1 %), and chloride (0.4 %). The average size distributions of PM1 species all peaked at an overlapping accumulation mode (∼ 500 nm), suggesting that aerosol particles were internally well-mixed and aged during long-range transport. Positive matrix factorization (PMF) analysis on the high-resolution organic mass spectra identified three distinct OA factors, including a BB-related OA (BBOA, 43.7 %), a nitrogen-containing OA (NOA, 13.9 %) and a more-oxidized oxygenated OA (MO-OOA, 42.4 %). Two polluted episodes with enhanced PM1 mass loadings and elevated BBOA contributions from the west and southwest of QOMS during the study were observed. A typical BB plume was investigated in detail to illustrate the chemical evolution of aerosol characteristics under distinct air mass origins, meteorological conditions, and atmospheric oxidation processes. © Author(s) 2018. |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85045044733&doi=10.5194%2facp-18-4617-2018&partnerID=40&md5=10991f78fb62100d3d46130b0cdc1d19 |
| 语种 | 英语 |
| scopus关键词 | aerosol composition; biomass burning; concentration (composition); long range transport; mass spectrometry; monsoon; particulate matter; Himalayas; South Asia |
| 来源期刊 | Atmospheric Chemistry and Physics
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77309 |
| 推荐引用方式 GB/T 7714 | Zhang X.； Xu J.； Kang S.； Liu Y.； Zhang Q.. Chemical characterization of long-range transport biomass burning emissions to the Himalayas: Insights from high-resolution aerosol mass spectrometry[J]. 中国科学院西北生态环境资源研究院,2018,18(7). |
| APA | Zhang X.； Xu J.； Kang S.； Liu Y.； Zhang Q..(2018).Chemical characterization of long-range transport biomass burning emissions to the Himalayas: Insights from high-resolution aerosol mass spectrometry.Atmospheric Chemistry and Physics,18(7). |
| MLA | Zhang X.； Xu J.； Kang S.； Liu Y.； Zhang Q.."Chemical characterization of long-range transport biomass burning emissions to the Himalayas: Insights from high-resolution aerosol mass spectrometry".Atmospheric Chemistry and Physics 18.7(2018). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
