Found 10360 publications. Showing page 223 of 415:
This report was requested by the Norwegian Public Roads Administration (Statens vegvesen) to provide information concerning non-exhaust traffic emissions in Oslo and the impact of changes in environmental speed limits on these emissions. This report provides the results of calculations made with the dispersion model EPISODE coupled to the NORTRIP road dust emission model, a recently developed emission model for calculating non-exhaust emissions. The change in modelled emissions due to changes in environmental speed limit are calculated for two different speed scenarios, where 'speed limit' and 'realistic speed' changes are compared. In addition the impact of the environmental speed limit is compared to other road dust control measures involving studded tyre share and heavy duty vehicle reduction, taken from a previous report.
2013
This report was requested by the Norwegian Public Roads Administration (Statens vegvesen) to provide information concerning non-exhaust traffic emissions in Oslo and the impact of various traffic parameters and road maintenance activities on these emissions. This report provides the results of calculations made with the NORTRIP model, a recently developed emission model for calculating non-exhaust emissions. The sensitivity of the modelled emissions to traffic parameters such as studded tyre share and fraction of heavy duty vehicles is investigated. In addition the impact of salting and cleaning is addressed.
2013
Chemical speciation of fine airborne particles in Abu Dhabi. NILU OR
PM2.5 was sampled at two urban background sites in Abu Dhabi (Khalifa in the city of Abu Dhabi and Bida Zayed) and analysed chemically for further source identification and quantification. Understanding of source contributions to PM2.5 is a prerequisite for the formulation of effective control strategies for PM2.5 emissions.
For both sites, five source factors were identified. Long-range transported aerosol is the largest contributor (~41%) to average PM2.5 mass concentrations at both sites. It gradually forms from SO2, which is possibly emitted into ambient in the Arabian Gulf area, while it is transported to the sites. Mineral dust was found to be the second most important source, contributing ~25% at both sites. It represents an ubiquitous natural contribution of mainly regional origin to particulate matter in Abu Dhabi.
Other source contributions to particle concentrations found at Khalifa identified were: local traffic (15.1%), shipping/industry (10.5%) and sea salt (4.0%). The latter is a natural contribution.
At Bida Zayed, a mixed traffic/industry factor (13.2%) was found, as well as another two factors of natural origin, explaining 11.4% and 8.7%
2013
Review of ambient air quality monitoring programme in Poland. NILU OR
The Norwegian Institute for Air Research - NILU and the Chief Inspectorate of Environmental Protection - GIO¿ are implementing the project : 'Strengthening the air quality assessment system in Poland, based on Norwegian experience' as part of the programme ¿Improving Environmental Monitoring and Inspection¿ within the framework of the European Economic Area 2009-2014.
A part of this project is to review the existing ambient air quality monitoring programme in operation in Poland based upon the report prepared by GIOS: ¿Information on monitoring equipment used in Voivodeship networks within the National Environmental Monitoring and supplementary data providing grounds for network equipment analyses¿.
The NILU assessment confirms the needs described by GIOS to carry out an intensive monitoring of air quality, especially as regards PM10, PM2.5, benzo(a)pyrene and ozone. NILU advices GIOS to include the modelling results when evaluating the needs for expanding the network for ozone.NILU recommends to evaluate the needs for further stations in relation to securing the data capture rate as requested by the EU Directive.
In general, NILU advices GIOS towards having a more robust network that meets the Directive requirements regarding data coverage and ensures enough information for the WIOSs to do assessment and planning.
2013
Air quality zone delimitation in Norway. Evaluation and delimitation proposal. NILU OR
An evaluation of the air quality in Norway over the last five years has been performed to set up the basis for a new Air Quality zone (AQ-zone) delimitation for reporting to European Commission concerning compliance of air quality directives. Air pollution levels (i.e. PM10, NO2, SO2, CO, O3, benzene, heavy metals, B(a)P) have been assessed regarding exceedances of limit values, target values, Norwegian national targets, and upper/lower assessment thresholds (UAT/LAT) defined for the protection of human health, vegetation and/or natural ecosystems. The results from this evaluation complemented with information regarding background concentration levels in Norway have been used to define a new delimitation: 1) AQ-zone delimitation for PM10, NO2, NOx, benzene and B(a)P, 2) AQ-zone delimitation for SO2 and heavy metals, 3) AQ-zone delimitation for ozone and 4) AQ-zone delimitation for CO.
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NILU carried out the screening 2013, This report describes the results, comparing and discussing them with other findings in both Norway and other regions.
2013
Data fusion in the environmental domain. IFIP Advances in Information and Communication Technology, 413
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Volatile organic compounds in the museum environment - a PTR-TOF pilot study on canvas samples. NILU F
2013
Development of a compact PTR-ToF-MS for suborbital research on the earth's atmospheric composition. NILU F
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