Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-2299-2019 |
Measurements of nitric oxide and ammonia soil fluxes from a wet savanna ecosystem site in West Africa during the DACCIWA field campaign | |
Pacifico, Federica1; Delon, Claire1; Jambert, Corinne1; Durand, Pierre1; Morris, Eleanor2; Evans, Mat J.2; Lohou, Fabienne1; Derrien, Solene1; Donnou, Venance H. E.3; Houeto, Arnaud V.3; Martinez, Irene Reinares1; Brilouet, Pierre-Etienne1 | |
2019-02-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:4页码:2299-2325 |
文章类型 | Article |
语种 | 英语 |
国家 | France; England; Benin |
英文摘要 | Biogenic fluxes from soil at a local and regional scale are crucial to study air pollution and climate. Here we present field measurements of soil fluxes of nitric oxide (NO) and ammonia (NH3) observed over four different land cover types, i.e. bare soil, grassland, maize field, and forest, at an inland rural site in Benin, West Africa, during the DACCIWA field campaign in June and July 2016. At the regional scale, urbanization and a massive growth in population in West Africa have been causing a strong increase in anthropogenic emissions. Anthropogenic pollutants are transported inland and northward from the megacities located on the coast, where the reaction with biogenic emissions may lead to enhanced ozone production outside urban areas, as well as secondary organic aerosol formation, with detrimental effects on humans, animals, natural vegetation, and crops. We observe NO fluxes up to 48.05 ngN m(-2) s(-1). NO fluxes averaged over all land cover types are 4.79 +/- 5.59 ngN m(-2) s(-1), and maximum soil emissions of NO are recorded over bare soil. NH3 is dominated by deposition for all land cover types. NH3 fluxes range between -6.59 and 4.96 ngN m(-2) s(-1). NH3 fluxes averaged over all land cover types are -0.91 +/- 1.27 ngN m(-2) s(-1), and maximum NH3 deposition is measured over bare soil. The observations show high spatial variability even for the same soil type, same day, and same meteorological conditions. We compare point daytime average measurements of NO emissions recorded during the field campaign with those simulated by GEOS-Chem (Goddard Earth Observing System Chemistry Model) for the same site and find good agreement. In an attempt to quantify NO emissions at the regional and national scale, we also provide a tentative estimate of total NO emissions for the entire country of Benin for the month of July using two distinct methods: upscaling point measurements and using the GEOS-Chem model. The two methods give similar results: 1.17 +/- 0.6 and 1.44 GgN month(-1), respectively. Total NH3 deposition estimated by upscaling point measurements for the month of July is 0.21 GgN month(-1). |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459317500004 |
WOS关键词 | BIOGENIC NO EMISSIONS ; ATMOSPHERE EXCHANGE ; TROPICAL ECOSYSTEMS ; NITROGEN MONOXIDE ; SURFACE EXCHANGE ; N2O EMISSIONS ; TRACE GASES ; GRASSLAND ; MODEL ; CROP |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17237 |
专题 | 地球科学 |
作者单位 | 1.Univ Toulouse, CNRS, Lab Aerol, UPS, F-31400 Toulouse, France; 2.Univ York, Dept Chem, Wolfson Atmospher Chem Labs, York YO10 5DD, N Yorkshire, England; 3.Univ Abomey Calavi, Lab Phys Rayonnement, 01 BP 526, Cotonou, Benin |
推荐引用方式 GB/T 7714 | Pacifico, Federica,Delon, Claire,Jambert, Corinne,et al. Measurements of nitric oxide and ammonia soil fluxes from a wet savanna ecosystem site in West Africa during the DACCIWA field campaign[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2299-2325. |
APA | Pacifico, Federica.,Delon, Claire.,Jambert, Corinne.,Durand, Pierre.,Morris, Eleanor.,...&Brilouet, Pierre-Etienne.(2019).Measurements of nitric oxide and ammonia soil fluxes from a wet savanna ecosystem site in West Africa during the DACCIWA field campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2299-2325. |
MLA | Pacifico, Federica,et al."Measurements of nitric oxide and ammonia soil fluxes from a wet savanna ecosystem site in West Africa during the DACCIWA field campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2299-2325. |
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