Mapping air quality zones for coastal urban centers

Abstract

A novel method to determine air quality zones in coastal urban areas is introduced using skewness (S) and kurtosis (K) statistics calculated from grid concentrations results of air dispersion models. The method identifies land-sea breeze effects that can be used to manage local air quality in areas of similar microclimates.

Forecasting air quality time series using deep learning

“…Due to the formation process of O 3 , the actual concentration a local population is exposed to may have been generated from precursors emitted hundreds or even thousands of kilometers away (Glavas and Sazakli 2011). Populations living in coastal regions may be exposed to pollutants generated locally but transformed and mixed with other precursors in circulating landsea breezes (Freeman et al 2017a). Tropospheric O 3 is therefore a more complex pollutant to estimate than primary pollutants such as sulfur dioxide (SO 2 ) or carbon monoxide (CO).…”

“…More than 98% of the population lives within 10 km of the coast and are subject to coastal effect winds, caused by the diurnal differential heating/cooling of the sea and land (Crosman and Horel 2010;Cuxart et al 2014). The land-sea breezes continuously shift direction and speed over the course of the day, recirculating pollution back and forth from land sources creating different zones of concentration mixing (Freeman et al, 2017a). Fixed air monitoring stations are operated throughout the country near residential and industrial areas, but predominantly in the coastal zone areas (Freeman et al, 2017b).…”

“…The location is centered between two major highways (5th and 6th Ring Highways) in a concentrated mixed commercial/residential area and north of the Kuwait International Airport. While not near the heavy refineries and industries in southern Kuwait, the site is impacted by land-sea breezes that recirculate emitted pollutants from throughout the Persian Gulf (Freeman et al, 2017a). A data set from December 1, 2012, to September 30, 2014, was used for this study.…”

Evaluation of air quality zone classification methods based on ambient air concentration exposure

“…Air quality zones (AQZs) were designated under the UNDP KIEMS project as shown in Figure 2 (Freeman et al, 2016).…”

Utilisation Des Tubes A Diffusion Passive Pour La Surveillance De La Pollution Automobile Dans La Ville De Meknes

“…Le monitoring et la surveillance des teneurs des polluants atmosphériques sont d'une importance cruciale et peuvent être réalisés par des outils de mesures passifs (tubes à diffusion passive, radiellos et badges) et actifs (stations télémétriques fixes et laboratoires mobiles). Ces deux derniers sont capables de quantifier les teneurs des polluants de l'air en temps réel et en continu (résolution temporelle très élevée) alors que les tubes à diffusion passive peuvent être utilisés pour étudier la pollution de l'air au milieu intérieur (Tahir et al ., 2015 ;Zabiegała et al, 2007) comme à l'extérieur (Hůnová, 2017) et ils permettent de réaliser des cartographies à haute échelle de résolution spatiale (Freeman et al, 2017 ;Mine Evci et al, 2017).…”