Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-10981-2019 |
Relative importance of gas uptake on aerosol and ground surfaces characterized by equivalent uptake coefficients | |
Li, Meng1,3; Su, Hang1; Li, Guo1; Ma, Nan2; Poeschl, Ulrich1; Cheng, Yafang1 | |
2019-08-29 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:16页码:10981-11011 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Peoples R China; USA |
英文摘要 | Quantifying the relative importance of gas uptake on the ground and aerosol surfaces helps to determine which processes should be included in atmospheric chemistry models. Gas uptake by aerosols is often characterized by an effective uptake coefficient (gamma(eff)), whereas gas uptake on the ground is usually described by a deposition velocity (V-d). For efficient comparison, we introduce an equivalent uptake coefficient (gamma(eqv)) at which the uptake flux of aerosols would equal that on the ground surface. If gamma(eff )is similar to or larger than gamma(eqv), aerosol uptake is important and should be included in atmospheric models. In this study, we compare uptake fluxes in the planetary boundary layer (PBL) for different reactive trace gases (O-3, NO2, SO2, N2O5, HNO3 and H2O2), aerosol types (mineral dust, soot, organic aerosol and sea salt aerosol), environments (urban areas, agricultural land, the Amazon forest and water bodies), seasons and mixing heights. For all investigated gases, gamma(eqv) ranges from magnitudes of 10(-6)-10(-4 )in polluted urban environments to 10(-4)-10(-1) under pristine forest conditions. In urban areas, aerosol uptake is relevant for all species (gamma(eff) >= gamma(eqv)) and should be considered in models. On the contrary, contributions of aerosol uptakes in the Amazon forest are minor compared with the dry deposition. The phase state of aerosols could be one of the crucial factors influencing the uptake rates. Current models tend to underestimate the O(3 )uptake on liquid organic aerosols which can be important, especially over regions with gamma(eff) >= gamma(eqv) H2O2 uptakes on a variety of aerosols are yet to be measured under laboratory conditions and evaluated. Given the fact that most models have considered the uptakes of these species on the ground surface, we suggest also considering the following processes in atmospheric models: N2O5 uptake by all types of aerosols, HNO3 and SO2 uptake by mineral dust and sea salt aerosols, H2O2 uptake by mineral dust, NO2 uptakes by sea salt aerosols and O-3 uptake by liquid organic aerosols. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483093000005 |
WOS关键词 | MINERAL DUST AEROSOL ; GASEOUS NITRIC-ACID ; SECONDARY ORGANIC AEROSOL ; TITANIUM-DIOXIDE AEROSOL ; KINETIC-MODEL FRAMEWORK ; SYNTHETIC SEA-SALT ; ARIZONA TEST DUST ; HETEROGENEOUS REACTION ; REACTIVE UPTAKE ; SULFUR-DIOXIDE |
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/186294 |
专题 | 地球科学 |
作者单位 | 1.Max Planck Inst Chem, D-55118 Mainz, Germany; 2.Jinan Univ, Ctr Air Pollut & Climate Change Res APCC, Inst Environm & Climate Res ECI, Guangzhou 511443, Guangdong, Peoples R China; 3.NOAA, Chem Sci Div, Earth Syst Res Lab, Boulder, CO 80305 USA |
推荐引用方式 GB/T 7714 | Li, Meng,Su, Hang,Li, Guo,et al. Relative importance of gas uptake on aerosol and ground surfaces characterized by equivalent uptake coefficients[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(16):10981-11011. |
APA | Li, Meng,Su, Hang,Li, Guo,Ma, Nan,Poeschl, Ulrich,&Cheng, Yafang.(2019).Relative importance of gas uptake on aerosol and ground surfaces characterized by equivalent uptake coefficients.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(16),10981-11011. |
MLA | Li, Meng,et al."Relative importance of gas uptake on aerosol and ground surfaces characterized by equivalent uptake coefficients".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.16(2019):10981-11011. |
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