Local versus Regional Contributions to PM10 Levels in the Western Mediterranean

IF 2.5 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Aerosol and Air Quality Research Pub Date : 2023-01-01 DOI:10.4209/aaqr.230218

Álvaro Clemente, Nuria Galindo, Jose F. Nicolás, Javier Crespo, Carlos Pastor, Eduardo Yubero

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引用次数: 0

Abstract

In this study, PM10 daily samples were collected every day during approximately one month in winter and one month in summer, 2019. Sampling was performed simultaneously at two different locations: an urban traffic site (~80 m a.s.l.) and a regional background station (~1500 m a.s.l.) in the western Mediterranean. The objective of this work was to investigate PM10 sources at both sites in order to determine regional and urban contributions to aerosol levels. Seven factors were obtained at both sites using Positive Matrix Factorisation (PMF): Saharan dust, Aged sea salt, Ammonium sulphate, Nitrate, Road traffic, Local dust and Fresh sea salt. At the urban site, the contribution of vehicle related sources (Road traffic, Nitrate and Local dust) was significantly higher in winter (~80%) than in summer (~60%). The average contribution of Saharan dust to PM10 levels was much larger at the mountain site (33%) than at the urban location (9%), due to the absence of significant anthropogenic emission sources in the vicinity of the regional background sampling station.

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西地中海地区对PM10水平的地方与区域贡献

在本研究中，在2019年冬季约一个月和夏季约一个月的时间里，每天采集PM10每日样本。在两个不同的地点同时进行采样:地中海西部的一个城市交通站点(a.s.l.约80米)和一个区域背景站(a.s.l.约1500米)。这项工作的目的是调查这两个地点的PM10来源，以确定区域和城市对气溶胶水平的贡献。使用正矩阵分解(PMF)在两个地点获得了7个因素:撒哈拉沙尘、老化海盐、硫酸铵、硝酸盐、道路交通、当地沙尘和新鲜海盐。在城市场地，车辆相关源(道路交通、硝态氮和局地扬尘)的贡献在冬季(~80%)显著高于夏季(~60%)。由于区域背景采样站附近没有显著的人为排放源，撒哈拉沙尘对PM10水平的平均贡献在山区(33%)远大于城市(9%)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerosol and Air Quality Research ENVIRONMENTAL SCIENCES-

CiteScore

8.30

自引率

10.00%

发文量

163

审稿时长

3 months

期刊介绍： The international journal of Aerosol and Air Quality Research (AAQR) covers all aspects of aerosol science and technology, atmospheric science and air quality related issues. It encompasses a multi-disciplinary field, including: - Aerosol, air quality, atmospheric chemistry and global change; - Air toxics (hazardous air pollutants (HAPs), persistent organic pollutants (POPs)) - Sources, control, transport and fate, human exposure; - Nanoparticle and nanotechnology; - Sources, combustion, thermal decomposition, emission, properties, behavior, formation, transport, deposition, measurement and analysis; - Effects on the environments; - Air quality and human health; - Bioaerosols; - Indoor air quality; - Energy and air pollution; - Pollution control technologies; - Invention and improvement of sampling instruments and technologies; - Optical/radiative properties and remote sensing; - Carbon dioxide emission, capture, storage and utilization; novel methods for the reduction of carbon dioxide emission; - Other topics related to aerosol and air quality.