Found 2226 publications. Showing page 65 of 223:
2014
Dispersion calculations of NO2 emissions from a heating plant at Ranheim. NILU OR
Dispersion calculations have been carried out for emissions from a heating plant at Ranheim. Contribution to NO2- and SO2-concentrations from the facility will be acceptable with recommended stack dimensions.
2014
2014
Bridge to Copernicus. Final project report. NILU OR
NILU has a mandate to monitor air quality and particularly its changes over time, both nationally through Miljødirektoratet (MD) and internationally through the European Monitoring and Evaluation Programme (EMEP). Satellite data related to atmospheric composition are increasingly used for monitoring as they provide long time series of spatially continuous observations. It is therefore essential for NILU to begin preparing for the upcoming Copernicus missions. Here, we evaluate methane products from AIRS, TES, TANSO-FTS and SCIAMACHY as added value for GHG monitoring in Norway and Svalbard. As expected, due to the low sensitivity of the sensors to ground-level Artic large deviations are seen when comparing to in situ data from Birkenes and Ny-Ålesund. Higher level products (L4), combining satellite and ground-based information, seem more appropriate for future reporting purposes. Further, we investigated the usability of the current set of long-term operational ground-based MAX-DOAS stations worldwide for inter-comparing their NO2 observations to those of satellite-based instruments, in particular OMI and GOME-2A. The two data sources agree very well for sites located in rural, non-polluted regions. For sites located in polluted areas we found strong systematic biases, large random errors, or slightly shifting systematic biases. The systematic biases can be explained primarily by the strong spatial gradients in NO2 levels in urban areas in conjunction with the large differences in the spatial representativity of the measurements. We evaluated the possibility to use the now relatively long time series of MAX-DOAS observations to fit a statistical trend model and to directly compare the resulting trends to those obtained for the satellite-based time series for the same area and time period. It was found that the sites with approximately 50 months of valid data for both data sources showed quite similar long-term trends and that sites with fewer than 30 months of valid data exhibited significant discrepancies in the resulting trends.
2014
Background concentrations in Norway: Towards automated annual updates. NILU OR
A semi-automated technique was developed for performing annual updates of the dataset on background concentrations in Norway which was produced in previous years. The code is written in the Matlab programming language and large parts of the code base are included in the Appendix of this report.
The spatial component of the system was updated to include data from 2009 through 2011. Acquiring and preparing the input data for the spatial component still requires a relatively small amount of manual effort, however the majority of the remaining process has been automated to the largest extent possible, such that only the derivation of the emivariograms for the residual kriging step requires very brief interaction by an expert user.
The temporal component has been updated to version 8 of the European air quality database (AirBase), now including several additional years up to and including 2013. Entirely new anomaly matrices have been calculated from the updated data for all background stations in Norway.
Assuming that the availability and the format of the required input data remains unchanged, future annual updates of the system can be carried out within a very short time frame on the order of around 1-2 days.
2014
The impact of traffic mitigation measures on NO2-concentrations. NILU OR
NILU and Urbanet Analyse AS has been commissioned by the The Norwegian Public Roads Administration Region East to study the impact of various traffic mitigation measures with regard to reduced concentrations of NO2 from traffic.
2014
Monitoring of greenhouse gases and aerosols at Svalbard and Birkenes in 2013 - Annual report. NILU OR
The report summaries the activities and results of the greenhouse gas monitoring at the Zeppelin Observatory situated on Svalbard in Arctic Norway during the period 2001-2013 and the greenhouse gas monitoring and aerosol observations from Birkenes for 2009-2013.
2014
Measurement of air quality and evaluation of risk for damage to objects in three buildings belonging to the Museum of Cultural History in Oslo, were performed in the years 2010-13 as part of two EU projects: ¿TeACH¿ (Grant agreement no. 212458) (2008-2011) and ¿MEMORI¿ (Grant agreement no. 265132). The measuements were perforemed with different kinds of dust and particle collectors and with dosimetry measuring damage on sensitive materials.
2014
Environmental pollutants in the terrestrial and urban environment. NILU OR
On behalf of the Norwegian Environment Agency, NILU - Norwegian Institute for Air Research in collaboration with NINA ¿ Norwegian Institute for Nature Research analysed biological samples from terrestrial urban regions for various inorganic and organic contaminants. Stable isotope analysis for nitrogen and carbon was carried out by the Institute for Energy Technology (IFE). Sample collection was carried out by the Norwegian Institute for Nature Research (NINA) and others. The purpose of this report is to provide an updated assessment of pollution present within the terrestrial urban environment in Norway. In the case of earthworms, urban sites were compared with reference sites.
Eggs of the terrestrial bird species golden eagle and pied flycatcher as well as liver from urban brown rats and urban and rural earthworms were investigated in this study.
2014
Citi-Sense MOB. Provisioning of social media platform. NILU OR
This report presents various social media platforms that have been created to foster communication between the Citi-Sense-MOB project¿s partners, stakeholders and users, and to facilitate citizens¿ engagement, participation and network building. It contains Citizens¿ Observatories Facebook Page, Oslo Citizens¿ Observatory Facebook Page, Citizens¿ Observatories Twitter Account, Citi-Sense-MOB Twitter Account, Citizens¿ Observatories LinkedIn Group, Citi-Sense-MOB Online Forum and Blogs, Citi-Sense-MOB App.
2014