Overview of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) Field Experiment-猫眼课题宝

DOI：

10.1021/acsestair.3c00076

发表时间：

2024-02

期刊：

ACS Es&t Air

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

William R. Simpson;J. Mao;G. J. Fochesatto;Kathy S. Law;P. DeCarlo;J. Schmale;K. Pratt;S. R. Arnold;Jochen Stutz;J. Dibb;J. Creamean;R. Weber;Brent J. Williams;B. Alexander;Lu Hu;R. Yokelson;M. Shiraiwa;S. Decesari;C. Anastasio;Barbara D'Anna;Robert C. Gilliam;A. Nenes;J. S. St. Clair;Barbara Trost;James H. Flynn;J. Savarino;Laura D. Conner;Nathan Kettle;Krista M. Heeringa;Sarah Albertin;A. Baccarini;Brice Barret;Michael A Battaglia;Slimane Bekki;T. J. Brado;Natalie Brett;D. Brus;James R. Campbell;Meeta Cesler‐Maloney;S. Cooperdock;Karolina Cysneiros de Carvalho;H. Delbarre;P. DeMott;Conor J.S. Dennehy;E. Dieudonné;Kayane K Dingilian;A. Donateo;Konstantinos-Matthaios Doulgeris;Kasey C Edwards;K. Fahey;T. Fang;F. Guo;Laura M. D. Heinlein;Andrew L. Holen;Deanna Huff;Amna Ijaz;Sarah Johnson;Sukriti Kapur;Damien T. Ketcherside;E. Levin;Emily Lill;Allison Moon;T. Onishi;Gianluca Pappaccogli;Russell Perkins;Roman Pohorsky;J. Raut;F. Ravetta;Tjarda Roberts;Ellis S Robinson;Federico Scoto;Vanessa Selimovic;Michael O. Sunday;B. Temime-Roussel;Xinxiu Tian;Judy Wu;Yuhan Yang

阿拉斯加分层污染和化学分析（ALPACA）现场实验是一项合作研究，旨在提高对冬季（寒冷气候和低光化学活性）污染源和化学过程的了解，调查室内污染，并研究受频繁温度逆温影响的污染扩散。许多研究目标的动机是研究所在地阿拉斯加州费尔班克斯居民提出的问题。本文描述了测量策略和2022年1月和2月现场实验期间遇到的条件，并报告了测量如何解决研究目标的早期例子，特别是居民感兴趣的目标。室外空气测量结果显示，颗粒物和污染气体（包括挥发性有机碳）浓度很高。在污染事件期间，低风速和极其稳定的大气条件将污染物困在73米以下，这是一个极浅的垂直尺度。基于系留气球的测量拦截了高空的羽流，这些羽流通过传输建模与发电厂点源相关。由于寒冷气候的居民大部分时间都在室内度过，因此该研究包括室内空气质量部分，在室内和室外进行测量，以研究渗透和室内来源。在没有室内活动（如烹饪和/或用颗粒炉加热）的情况下，室内颗粒物浓度低于室外;然而，烹饪和颗粒炉燃烧往往导致室内颗粒物浓度高于室外。质量标准化的颗粒物氧化电位，健康相关的属性测量与二硫代噻吩，室内颗粒的反应性，不同的来源，与烹饪颗粒具有较低的氧化电位比颗粒炉颗粒每质量。

The Alaskan Layered Pollution And Chemical Analysis (ALPACA) field experiment was a collaborative study designed to improve understanding of pollution sources and chemical processes during winter (cold climate and low-photochemical activity), to investigate indoor pollution, and to study dispersion of pollution as affected by frequent temperature inversions. A number of the research goals were motivated by questions raised by residents of Fairbanks, Alaska, where the study was held. This paper describes the measurement strategies and the conditions encountered during the January and February 2022 field experiment, and reports early examples of how the measurements addressed research goals, particularly those of interest to the residents. Outdoor air measurements showed high concentrations of particulate matter and pollutant gases including volatile organic carbon species. During pollution events, low winds and extremely stable atmospheric conditions trapped pollution below 73 m, an extremely shallow vertical scale. Tethered-balloon-based measurements intercepted plumes aloft, which were associated with power plant point sources through transport modeling. Because cold climate residents spend much of their time indoors, the study included an indoor air quality component, where measurements were made inside and outside a house to study infiltration and indoor sources. In the absence of indoor activities such as cooking and/or heating with a pellet stove, indoor particulate matter concentrations were lower than outdoors; however, cooking and pellet stove burns often caused higher indoor particulate matter concentrations than outdoors. The mass-normalized particulate matter oxidative potential, a health-relevant property measured here by the reactivity with dithiothreiol, of indoor particles varied by source, with cooking particles having less oxidative potential per mass than pellet stove particles.

Overview of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) Field Experiment

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