PDF(Pubmed)
Abstract：
The abundance and recurrence of particulate matter in Abu Dhabi Emirate (ADE), are often derived from different emission sources such as the combustion of hydrocarbon, producing much of the PM2.5 found in outdoor air, as well as a significant proportion of PM10. Wind-blown dust from open desert areas and construction sites, landfills and agriculture, brush/waste burning, and industrial sources, has contributed markedly to the problem of the spread of haze and the long-range movement of pollutants in the country. In this study, the spatio-temporal characterization of PM10 concentration across the Emirate was analyzed utilizing geospatial interpolation, spanning the period between 2013 and 2017. The results suggest that the fluctuations of the PM10 concentration can be decomposed into three dominant types, each characterizing different spatial and temporal variations. First, the western region with PM10 showing a peak concentration during the summer season i.e., when the winds are predominantly northerlies or northwesterly, and a minimal concentration during the winter season. Second, the central region with the PM10 exhibiting a concentration surge in July-August, as a result of a mix of strong winds and high temperatures. Third, the eastern region with a low concentration of PM10. Seasonally, this component exhibits two concentration maxima during quarters 2 and 3 (summer), and two minima during quarters 1 and 4 (winter). Indeed, the seasonal variability of PM10 concentration in desertic countries like the UAE is closely linked to the seasonal variation of heat waves and dust storms, which are characteristic of the dryland climate. During the summer months, the UAE experiences high temperatures and arid conditions, creating favorable conditions for the formation of heat waves. Furthermore, it was noticed that the PM10 concentration also fluctuated markedly throughout the study period with anomalies detected in open desert areas and regions characterized by extensive industrial operations.
摘要：
阿布扎比酋长国（ADE）颗粒物的丰度和复发，通常来自不同的排放源，例如碳氢化合物的燃烧，在室外空气中产生大量的PM2.5，以及相当比例的PM10。来自开阔沙漠地区和建筑工地的风尘，垃圾填埋场和农业，刷子/废物燃烧，和工业来源，显着导致了雾霾的蔓延和污染物在该国的远程移动的问题。在这项研究中,利用地理空间插值分析了整个酋长国PM10浓度的时空特征，跨越2013年至2017年期间。结果表明，PM10浓度的波动可以分解为三种主要类型，每个特征不同的空间和时间变化。首先,西部地区的PM10在夏季出现峰值浓度，即当风主要是北风或西北风时，在冬季和最低浓度。第二,7月至8月PM10浓度激增的中部地区，由于强风和高温的混合。第三，东部地区PM10浓度较低。季节性,该成分在第2和第3季度(夏季)表现出两个浓度最大值，和两个最小值在四分之一和四分之一（冬季）。的确,在阿联酋等沙漠国家，PM10浓度的季节性变化与热浪和沙尘暴的季节性变化密切相关，这是旱地气候的特征。在夏季，阿联酋经历高温和干旱的条件，为热浪的形成创造有利条件。此外，人们注意到，在整个研究期间，PM10的浓度也出现了显着波动，在开阔的沙漠地区和以广泛的工业活动为特征的地区发现了异常。
