Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020JD032614 |
Characterizing Weekly Cycles of Particulate Matter in a Coastal Megacity: The Importance of a Seasonal, Size-Resolved, and Chemically Speciated Analysis | |
Hilario, Miguel Ricardo A.1; Cruz, Melliza Templonuevo1,2; Banaga, Paola Angela1,3; Betito, Grace1,3; Braun, Rachel A.4; Stahl, Connor4; Cambaliza, Maria Obiminda1,3; Lorenzo, Genevieve Rose1,5; MacDonald, Alexander B.4; AzadiAghdam, Mojtaba4; Pabroa, Preciosa Corazon6; Yee, John Robin6; Simpas, James Bernard1,3; Sorooshian, Armin4,5 | |
2020-07-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | Philippines; USA |
英文摘要 | We present the first study of the weekly cycles (WCs) of chemically speciated and size-resolved particulate matter (PM) in Metro Manila, Philippines, a coastal megacity located within a highly complex meteorological environment that is subject to both anthropogenic and natural sources. To measure PM, Micro-Orifice Uniform Deposit Impactors (MOUDIs) were deployed in Metro Manila from August 2018 to October 2019 and samples were analyzed for ionic and elemental species, including black carbon (BC). The WC in Metro Manila varied remarkably across seasons, linked to shifts in meteorology, transport, and aerosol source. Identified aerosol sources were traffic, local and regional burning, dust, sea salt, and secondary aerosol formation. Direct emissions induced a late workweek peak, while secondary aerosol formation led to a weekend peak in response to precursor buildup mainly from traffic. Seasonal analysis revealed that local burning from solid waste management and agricultural fires induced a strong WC peak while regional burning emissions from the Maritime Continent (MC) and possibly the Asian continent elevated seasonal baseline concentrations of the WC. BC showed a seasonally persistent WC, consistent in magnitude, weekly peak timing, and particle size. The dominant submicrometer WC and the contribution of BC across seasons have important ramifications on public health and policymaking, which are also discussed. As many of the observed WC patterns are undetectable when using only bulk PM, this study demonstrates that a seasonal, size-resolved, and chemically speciated characterization is required to more fully understand the driving mechanisms governing WCs. |
英文关键词 | particulate matter CAMP2EX weekly cycle manila biomass burning urban emissions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551484700039 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; SOLID-WASTE MANAGEMENT ; WESTERN UNITED-STATES ; LONG-RANGE TRANSPORT ; BLACK CARBON ; AIR-QUALITY ; METEOROLOGICAL VARIABLES ; DICARBOXYLIC-ACIDS ; MIXING STATE ; METRO MANILA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/289508 |
专题 | 气候变化 |
作者单位 | 1.Manila Observ, Quezon City, Philippines; 2.Univ Philippines Diliman, Inst Environm Sci & Meteorol, Quezon City, Philippines; 3.Ateneo Manila Univ, Dept Phys, Quezon City, Philippines; 4.Univ Arizona, Dept Chem & Environm Engn, Tucson, AZ 85721 USA; 5.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA; 6.Philippine Nucl Res Inst, Dept Sci & Technol, Commonwealth Ave, Quezon City, Philippines |
推荐引用方式 GB/T 7714 | Hilario, Miguel Ricardo A.,Cruz, Melliza Templonuevo,Banaga, Paola Angela,et al. Characterizing Weekly Cycles of Particulate Matter in a Coastal Megacity: The Importance of a Seasonal, Size-Resolved, and Chemically Speciated Analysis[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(13). |
APA | Hilario, Miguel Ricardo A..,Cruz, Melliza Templonuevo.,Banaga, Paola Angela.,Betito, Grace.,Braun, Rachel A..,...&Sorooshian, Armin.(2020).Characterizing Weekly Cycles of Particulate Matter in a Coastal Megacity: The Importance of a Seasonal, Size-Resolved, and Chemically Speciated Analysis.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(13). |
MLA | Hilario, Miguel Ricardo A.,et al."Characterizing Weekly Cycles of Particulate Matter in a Coastal Megacity: The Importance of a Seasonal, Size-Resolved, and Chemically Speciated Analysis".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.13(2020). |
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