Spatio-temporal distribution and source partitioning of formaldehyde over Ethiopia and Kenya
文献类型：期刊论文
| 作者 | Liu, Yang1,4; Tang, Zhipeng1,4 ; Abera, Temesgen1,4; Zhang, Xuezhen3; Hakola, Hannele2; Pellikka, Petri1,4; Maeda, Eduardo1
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| 刊名 | ATMOSPHERIC ENVIRONMENT
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| 出版日期 | 2020-09-15 |
| 卷号 | 237页码:9 |
| 关键词 | Formaldehyde Distribution Source partitioning OMI East Africa |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2020.117706 |
| 通讯作者 | Liu, Yang(yang.z.liu@helsinki.fi) |
| 英文摘要 | Understanding the local sources of atmospheric formaldehyde (HCHO) is a key step in accurately determining the inversion of biogenic volatile organic compounds (BVOCs). This study aims to clarify the main sources and emission patterns of local total HCHO column densities over Ethiopia and Kenya. Between 2005 and 2015, the total monthly HCHO varied from 3.7 x 10(15) molecules/cm(2) to 7.7 x 10(15) molecules/cm(2). Monthly HCHO showed a strong seasonal pattern with annual peaks on March, July (small peak) and October, which well matched with the rainy seasons in Ethiopia and Kenya. Natural sources contributed 36% to the total HCHO in the study area. Grassland and savannas showed high column densities in the long rainy season starting from March, with the monthly average emission value of 5.6 x 10(15) molecules/cm(2). Multiple regression result showed that vegetation contributed 3.5 x 10(13) molecules/cm(2) to monthly HCHO, with grassland and forest in eastern Kenya and the boundary of Ethiopia and Kenya were the main contributors in these regions. Biomass burning and methane contributed to HCHO emission in the western and northern Ethiopia with a magnitude of 1.4 x 10(14) molecules/cm(2) and 6.2 x 10(16) molecules/cm(2) per month, respectively. Economic activities showed negative response to HCHO columns, except over the two small-scale regions of Addis Ababa City and Nairobi City. This study quantified the HCHO from various sources and suggested that natural sources produce more HCHO than anthropogenic sources over Ethiopia and Kenya. |
| WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; ANTHROPOGENIC EMISSIONS ; ISOPRENE EMISSIONS ; CARBON-MONOXIDE ; COLUMNS ; OMI ; SATELLITE ; HCHO ; TRENDS ; MODEL |
| 资助项目 | China Scholarship Council[201806040217] ; Academy of Finland[318252] ; Academy of Finland[319905] ; Academy of Finland: Academy of Finland[318645] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000558538000027 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | China Scholarship Council ; Academy of Finland ; Academy of Finland: Academy of Finland |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/158094]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Yang |
| 作者单位 | 1.Univ Helsinki, Dept Geosci & Geog, POB 64, Helsinki 00014, Finland 2.Finnish Meteorol Inst, PL 503, Helsinki 00101, Finland 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Univ Helsinki, Fac Sci, Inst Atmospher & Earth Syst Res, Helsinki, Finland |
| 推荐引用方式 GB/T 7714 | Liu, Yang,Tang, Zhipeng,Abera, Temesgen,et al. Spatio-temporal distribution and source partitioning of formaldehyde over Ethiopia and Kenya[J]. ATMOSPHERIC ENVIRONMENT,2020,237:9. |
| APA | Liu, Yang.,Tang, Zhipeng.,Abera, Temesgen.,Zhang, Xuezhen.,Hakola, Hannele.,...&Maeda, Eduardo.(2020).Spatio-temporal distribution and source partitioning of formaldehyde over Ethiopia and Kenya.ATMOSPHERIC ENVIRONMENT,237,9. |
| MLA | Liu, Yang,et al."Spatio-temporal distribution and source partitioning of formaldehyde over Ethiopia and Kenya".ATMOSPHERIC ENVIRONMENT 237(2020):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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