气候变化领域集成服务门户(CCPortal): Measurement report: Firework impacts on air quality in Metro Manila, Philippines, during the 2019 New Year revelry

CCPortal

DOI	10.5194/acp-21-6155-2021
	Measurement report: Firework impacts on air quality in Metro Manila, Philippines, during the 2019 New Year revelry
	Rose Lorenzo G.; Angela Bañaga P.; Obiminda Cambaliza M.; Templonuevo Cruz M.; Azadiaghdam M.; Arellano A.; Betito G.; Braun R.; Corral A.F.; Dadashazar H.; Edwards E.-L.; Eloranta E.; Holz R.; Leung G.; Ma L.; Macdonald A.B.; Reid J.S.; Bernard Simpas J.; Stahl C.; Marie Visaga S.; Sorooshian A.
发表日期	2021
ISSN	1680-7316
起始页码	6155
结束页码	6173
卷号	21 期号:8
英文摘要	Fireworks degrade air quality, reduce visibility, alter atmospheric chemistry, and cause short-term adverse health effects. However, there have not been any comprehensive physicochemical and optical measurements of fireworks and their associated impacts in a Southeast Asia megacity, where fireworks are a regular part of the culture. Sizeresolved particulate matter (PM) measurements were made before, during, and after New Year 2019 at the Manila Observatory in Quezon City, Philippines, as part of the Cloud, Aerosol, and Monsoon Processes Philippines Experiment (CAMP2Ex). A high-spectral-resolution lidar (HSRL) recorded a substantial increase in backscattered signal associated with high aerosol loading ∼ 440m above the surface during the peak of firework activities around 00:00 (local time). This was accompanied by PM2:5 concentrations peaking at 383.9 μgm-3. During the firework event, watersoluble ions and elements, which affect particle formation, growth, and fate, were mostly in the submicrometer diameter range. Total (>0:056 μm) water-soluble bulk particle mass concentrations were enriched by 5.7 times during the fireworks relative to the background (i.e., average of before and after the firework). The water-soluble mass fraction of PM2:5 increased by 18.5% above that of background values. This corresponded to increased volume fractions of inorganics which increased bulk particle hygroscopicity, kappa (κ), from 0.11 (background) to 0.18 (fireworks). Potassium and non-sea-salt (nss) SO2-4 contributed the most (70.9 %) to the water-soluble mass, with their mass size distributions shifting from a smaller to a larger submicrometer mode during the firework event. On the other hand, mass size distributions for NO3- , Cl-, and Mg2+ (21.1% mass contribution) shifted from a supermicrometer mode to a submicrometer mode. Being both uninfluenced by secondary aerosol formation and constituents of firework materials, a subset of species were identified as the best firework tracer species (Cu, Ba, Sr, K+, Al, and Pb). Although these species (excluding K+) only contributed 2.1% of the total mass concentration of watersoluble ions and elements, they exhibited the highest enrichments (6.1 to 65.2) during the fireworks. Surface microscopy analysis confirmed the presence of potassium/chloride-rich cubic particles along with capsule-shaped particles in firework samples. The results of this study highlight how firework emissions change the physicochemical and optical properties of water-soluble particles (e.g., mass size distribution, composition, hygroscopicity, and aerosol backscatter), which subsequently alters the background aerosol's respirability, influence on surroundings, ability to uptake gases, and viability as cloud condensation nuclei (CCN). © Author(s) 2021.
语种	英语
scopus关键词	aerosol; air quality; atmospheric chemistry; concentration (composition); particulate matter; physicochemical property; source apportionment; tracer; National Capital Region; Philippines; Quezon City
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246953
作者单位	Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Manila Observatory, Quezon City, 1108, Philippines; Department of Physics, School of Science and Engineering, Ateneo de Manila University, Quezon City, 1108, Philippines; Institute of Environmental Science and Meteorology, University of the Philippines, Diliman, Quezon City, 1101, Philippines; Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ 85721, United States; Marine Meteorology Division, Naval Research Laboratory, Monterey, CA, United States
推荐引用方式 GB/T 7714	Rose Lorenzo G.,Angela Bañaga P.,Obiminda Cambaliza M.,et al. Measurement report: Firework impacts on air quality in Metro Manila, Philippines, during the 2019 New Year revelry[J],2021,21(8).
APA	Rose Lorenzo G..,Angela Bañaga P..,Obiminda Cambaliza M..,Templonuevo Cruz M..,Azadiaghdam M..,...&Sorooshian A..(2021).Measurement report: Firework impacts on air quality in Metro Manila, Philippines, during the 2019 New Year revelry.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(8).
MLA	Rose Lorenzo G.,et al."Measurement report: Firework impacts on air quality in Metro Manila, Philippines, during the 2019 New Year revelry".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.8(2021).