Found 9746 publications. Showing page 32 of 390:
Ambient air pollution screening study in Dhaka and Chittagong. 16 February - 01 March 2013. NILU OR
As a part of the Bangladesh Air Pollution Studies (BAPS) project, a screening study of air pollution was performed in Dhaka and Chittagong with assistance from local university partners. The screening study work fell under Task 1 (Emissions Inventory) of the BAPS project.
The screening study was performed in Dhaka from 16 February - 26 February 2013, and Chittagong from 20 February - 01 March 2013. The main objective of the study was to gain an overview of the background concentrations and the spatial distribution of the air pollution in the Dhaka city and Chittagong city areas. This study is also following up on a similar study performed in Dhaka in February 2011. The screening study focused on the following gaseous components in Dhaka and Chittagong: Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), and Ozone (O3). In addition, samples for persistent organic pollutants (POPs) were collected in Chittagong in connection with the study, which will be reported separately in fall 2013 under a different project.
2014
Ambient air quality in Abu Dhabi. 2011 annual report. NILU OR
This Annual Report has been based on data from ten air quality monitoring stations operated in the Emirate of Abu Dhabi during 2011. The data have been ¿cleaned¿ and prepared as a basis for the statistics presented in this report. Air pollution in Abu Dhabi is dominated by suspended particles in the air. One of the main sources is linked to dust from the desert areas and to the occurrence of sand storms. Air Quality limit values for PM10 were exceeded at all monitoring sites in Abu Dhabi in 2011.
Limit values for 8-hour average ozone concentrations were also exceeded at all stations. Limit values for SO2, NO2 and CO were not exceeded in Abu Dhabi Emirate during 2011.
2012
2014
2009
Amines worst case studies. Worst case studies on amine emissions from CO2 capture plants (Task 6). NILU OR
2008
Ammonia emission estimates using CrIS satellite observations over Europe
Over the past century, ammonia (NH3) emissions have increased with the growth of livestock and fertilizer usage. The abundant NH3 emissions lead to secondary fine particulate matter (PM2.5) pollution, climate change, and a reduction in biodiversity, and they affect human health. Up-to-date and spatially and temporally resolved information on NH3 emissions is essential to better quantify their impact. In this study we applied the existing Daily Emissions Constrained by Satellite Observations (DECSO) algorithm to NH3 observations from the Cross-track Infrared Sounder (CrIS) to estimate NH3 emissions. Because NH3 in the atmosphere is influenced by nitrogen oxides (NOx), we implemented DECSO to estimate NOx and NH3 emissions simultaneously. The emissions are derived over Europe for 2020 on a spatial resolution of 0.2°×0.2° using daily observations from both CrIS and the TROPOspheric Monitoring Instrument (TROPOMI; on the Sentinel-5 Precursor (S5P) satellite). Due to the limited number of daily satellite observations of NH3, monthly emissions of NH3 are reported. The total NH3 emissions derived from observations are about 8 Tg yr−1, with a precision of about 5 %–17 % per grid cell per year over the European domain (35–55° N, 10° W–30° E). The comparison of the satellite-derived NH3 emissions from DECSO with independent bottom-up inventories and in situ observations indicates a consistency in terms of magnitude on the country totals, with the results also being comparable regarding the temporal and spatial distributions. The validation of DECSO over Europe implies that we can use DECSO to quickly derive fairly accurate monthly emissions of NH3 over regions with limited local information on NH3 emissions.
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2007