Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-16953-2018 |
Surface-atmosphere exchange of inorganic water-soluble gases and associated ions in bulk aerosol above agricultural grassland pre- and postfertilisation | |
Ramsay, Robbie1,2; Di Marco, Chiara F.1; Heal, Mathew R.2; Twigg, Marsailidh M.1; Cowan, Nicholas1; Jones, Matthew R.1; Leeson, Sarah R.1; Bloss, William J.3; Kramer, Louisa J.3; Crilley, Leigh3; Soergel, Matthias4; Andreae, Meinrat4,5; Nemitz, Eiko1 | |
2018-11-30 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23页码:16953-16978 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; England; Germany; USA |
英文摘要 | The increasing use of intensive agricultural practices can lead to damaging consequences for the atmosphere through enhanced emissions of air pollutants. However, there are few direct measurements of the surface-atmosphere exchange of trace gases and water-soluble aerosols over agricultural grassland, particularly of reactive nitrogen compounds. In this study, we present measurements of the concentrations, fluxes and deposition velocities of the trace gases HCl, HONO, HNO3, S-2 and NH3 as well as their associated water-soluble aerosol counterparts Cl-, NO2-, NO3-, SO42- and NH(4)(+ )as determined hourly for 1 month in May-June 2016 over agricultural grassland near Edinburgh, UK, pre- and postfertilisation. Measurements were made using the Gradient of Aerosols and Gases Online Registrator (GRAEGOR) wet-chemistry two-point gradient instrument. Emissions of NH3 peaked at 1460 ng m(-2) s(-1) 3h after fertilisation, with an emission of HONO peaking at 4.92 ng m(-2) s(-1) occurring 5h after fertilisation. Apparent emissions of NO3- aerosol were observed after fertilisation which, coupled with a divergence of HNO3 deposition velocity (V-d) from its theoretical maximum value, suggested the reaction of emitted NH3 with atmospheric HNO3 to form ammonium nitrate aerosol. The use of the conservative exchange fluxes of tot-NH4+ and tot-NO3- indicated net emission of tot-NO3-, implying a ground source of HNO(3 )after fertilisation. Daytime concentrations of HONO remained above the detection limit (30 ng m(-3)) throughout the campaign, suggesting a daytime source for HONO at the site. Whilst the mean V-d of NH4+ was 0.93 mm s(-1) in the range expected for the accumulation mode, the larger average V-d for Cl- (3.65 mm s(-1)), NO3- (1.97 mm s(-1)) and SO42- (1.89 mm s(-1)) reflected the contribution of a super-micron fraction and decreased with increasing PM2.5/PM10 ratio (a proxy measurement for aerosol size), providing evidence - although limited by the use of a proxy for aerosol size - of a size dependence of aerosol deposition velocity for aerosol chemical compounds, which has been suggested from process-orientated models of aerosol deposition. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451729400002 |
WOS关键词 | REACTIVE NITROGEN-COMPOUNDS ; DRY DEPOSITION ; AMMONIA EXCHANGE ; ANNULAR DENUDER ; AMBIENT AIR ; SURFACE/ATMOSPHERE EXCHANGE ; PARTICLE DEPOSITION ; FLUX MEASUREMENTS ; SULFUR-DIOXIDE ; TECHNICAL NOTE |
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/30823 |
专题 | 地球科学 |
作者单位 | 1.CEH, Edinburgh EH26 0QB, Midlothian, Scotland; 2.Univ Edinburgh, Sch Chem, West Mains Rd, Edinburgh EH9 3JJ, Midlothian, Scotland; 3.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England; 4.Max Plank Inst Chem, Biogeochem Dept, POB 3060, Mainz, Germany; 5.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Ramsay, Robbie,Di Marco, Chiara F.,Heal, Mathew R.,et al. Surface-atmosphere exchange of inorganic water-soluble gases and associated ions in bulk aerosol above agricultural grassland pre- and postfertilisation[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(23):16953-16978. |
APA | Ramsay, Robbie.,Di Marco, Chiara F..,Heal, Mathew R..,Twigg, Marsailidh M..,Cowan, Nicholas.,...&Nemitz, Eiko.(2018).Surface-atmosphere exchange of inorganic water-soluble gases and associated ions in bulk aerosol above agricultural grassland pre- and postfertilisation.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23),16953-16978. |
MLA | Ramsay, Robbie,et al."Surface-atmosphere exchange of inorganic water-soluble gases and associated ions in bulk aerosol above agricultural grassland pre- and postfertilisation".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018):16953-16978. |
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