Granulometry and micromorphology of airborne particles in the Brussels urban environment

info:eu-repo/semantics/publishe

Airborne particulates and traffic related pollutions during car-free sundays in the Brussels urban area

info:eu-repo/semantics/publishe

Temporal variations of airborne particles concentration in the Brussels environment.

We report and analyze data on the PM10 fraction of airborne particles measured at five recording stations in the Brussels region from October 2002 till September 2003. These stations are representative of the various activity sectors of the Brussels urban area. The objective was the determination of the origin of the PM10 particles (particles up to 10 mum) that are recorded in that region in order to follow the EU directives concerning tolerance level of airborne particles concentration. In order to evaluate the impacts of local and external factors that inject solid particles in the atmosphere of Brussels we compared concentration data from working and not working (holidays) periods. Moreover, we also compared concentrations from periods of agricultural activity and rest in the Brabant provinces surrounding the Brussels region for various crop types. The results lead to the conclusion that the impact or urban traffic is rather limited while that of the agricultural activities is important. Moreover, there appears a clear-cut distinction between different types of crops.info:eu-repo/semantics/publishe

Екологічні аспекти формування угрупувань молюсків Азовського моря

Своєрідний гідрологічний режим Азовського моря, невисока солоність, різкі коливання температури, тривалий зимовий період і мілководність ˗ ці чинники обумовлюють специфічний відбір молюсків з чорноморської фауни, яка представляє собою вже відібрану фауну Середземного моря. Деякі середземноморські форми знаходять в Азовському морі сприятливі умови для свого розвитку і формують великі скупчення. Очевидно, що в даний час структура донних біоценозів в Азовському морі зазнає змін. Перспектива подальших досліджень в даному напрямку визначається необхідністю ретельного моніторингу змін в екологічній системі Азовського моря

Atmospheric Pollution by Iceland Volcano Lava Dispersion - the Brussels Case

Cambridge Universityinfo:eu-repo/semantics/publishe

Evaluation of car free days on air quality in the Brussels urban area

info:eu-repo/semantics/publishe

Agricultural activities impact on atmospheric pollution in urban area of Brussels

info:eu-repo/semantics/publishe

Weekly variations of atmospheric particles, micromorphology and chemistry in the Brussels urban environment

The purpose of this study was to measure the impact of urban activities on airborne particle dynamics during weekend periods in Brussels urban area. Differences in the granulometry and micromorphology between particles sampled on working days and weekends were studied.We quantified the area, size, number, and the chemistry parameters of the airborne particles and compared between Saturday, Sunday, and Monday. We report and analyze data on airborne particles up to PM10, measured in the Brussels region from October 2002 to September 2003. Our investigation reveals detailed information regarding chemical composition of the airborne particles over the weekend period in the Brussels urban area. Furthermore, the majority of the airborne particles in the Brussels region may belong to sources geographically outside the (in situ) Brussels area. © Springer Science + Business Media B.V. 2009.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Elevated PM10 concentrations and high PM2.5/PM10 ratio in the Brussels Urban Area during the 2006 car-free Sunday

The results of the Car-Free Sundays in Brussels demonstrate the close relationship between the traffic and the presence of the gaseous pollutants such as NO, NO2, CO, CO2 and O3 in a traffic environment. The relationship with PM10 and PM2.5 seems to be much more complex. In fact, the PM10 andPM2.5 concentrations on the Car-Free Sunday 2006 were amongst the highest that year and they were three times higher than on an average Sunday or working day. Analysis of the data indicate that direct particle emissions from traffic only have a limited contribution to the overall PM concentration. © 2010 Inderscience Enterprises Ltd.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Dust storm originate from Sahara covering Western Europe: A case study

Erosion, transport and deposition of atmospheric dust are largely determined by the nature and state of the earth's surface (the dust source) and the physical characteristics of the atmosphere. The state of the atmosphere is subject to important temporal variations related to diurnal and seasonal cycles and to synoptic conditions. The dynamic evolution of particulate concentrations measured at Brussels showed a significant peak in PM10 during 24-25 March 2007. The 4-day backward trajectories calculated for this peak attributed its cause to a dust storm that had occurred 2 days earlier in the Sahara. Chemical analysis showed a significant similarity to Saharan dust composition, primarily oxides of Si, Fe, and Al. On 29 March, another peak with a very high PM concentration and an elevated PM2.5-to-PM10 ratio was recorded in Brussels. Analysis of its PM profile showed that it was mainly caused by formation of secondary aerosols. © 2008 Elsevier Ltd. All rights reserved.SCOPUS: ar.jinfo:eu-repo/semantics/publishe