Found 9883 publications. Showing page 98 of 396:
Deposition of air pollutants around the North Sea and the North-East Atlantic in 2013. OSPAR monitoring and assessment, 654/2015
2015
Deposition of air pollutants around the North Sea and the North-East Atlantic in 2014. OSPAR monitoring and assessment, 680/2016
2016
Although aerosols in the Arctic have multiple and complex impacts on the regional climate, their removal due to deposition is still not well quantified. We combined meteorological, aerosol, precipitation, and snowpack observations with simulations to derive information about the deposition of sea salt components and black carbon (BC) from November 2011 to April 2012 to the Arctic snowpack at two locations close to Ny-Ålesund, Svalbard. The dominating role of sea salt and the contribution of dust for the composition of atmospheric aerosols were reflected in the seasonal composition of the snowpack. The strong alignment of the concentrations of the major sea salt components in the aerosols, the precipitation, and the snowpack is linked to the importance of wet deposition for transfer from the atmosphere to the snowpack. This agreement was less strong for monthly snow budgets and deposition, indicating important relocation of the impurities inside the snowpack after deposition. Wet deposition was less important for the transfer of nitrate, non-sea-salt sulfate, and BC to the snow during the winter period. The average BC concentration in the snowpack remains small, with a limited impact on snow albedo and melting. Nevertheless, the observations also indicate an important redistribution of BC in the snowpack, leading to layers with enhanced concentrations. The complex behavior of bromide due to modifications during sea salt aerosol formation and remobilization in the atmosphere and in the snow were not resolved because of the lack of bromide measurements in aerosols and precipitation.
2019
Deposition of major inorganic compounds in Norway 1978-1982 and 1997-2001: status and trends. NILU OR
2002
Deposition of major inorganic compounds in Norway 2007-2011. NILU OR
The total deposition of sulphur and nitrogen compounds in Norway during the period 2007-2011 has been estimated on the basis of available measurement data for concentrations and precipitation. Deposition of non-marine base cations is also estimated. Results are compared with previous estimates for 2002-2006.
2012
Deposition of major inorganic compounds in Norway 2012-2016. NILU report
This report contains estimates of atmospheric deposition of major inorganic compounds in Norway for the period 2012 to 2016 using two different methods, one observational based method while the other combining atmospheric transport model with observations. Both methods show similar clear spatial gradient in the atmospheric deposition with highest loads in south and south-west. The combined method has improved the spatial information of the deposition pattern for wet deposition. For dry deposition, there are quite large uncertainties in the estimated dry deposition velocities in both methods. Compared to the previous period 2007-2011, there is a decrease in the total sulfur deposition in Norway of 9%. For total nitrogen there are minor changes. Compared to the 1978-1982 period, the reductions in sulfur and nitrogen depositions are 75% and 20% respectively.
2017
2004
Deposition of sulfur and nitrogen in Norway 2017-2021
Norwegian Meteorological Institute
2023
2010
Deriving glacier flow of Comfortlessbreen, Svalbard, with 2-pass differential SAR interferometry. NILU F
2010
2004
2010
2010
This document describes a measurement campaign intended to provide data for the further development and assessment of non-exhaust emissions and the models used to describe them.
2010
2005
2009
Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds
Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 nanoparticles (NPs) containing two luminophores, a EuIII:EDTA complex and a newly synthesised fluorophore based on the organic boron-dipyrromethene (BODIPY)-moiety. The particles exhibited stable EuIII PL emission intensity with a long lifetime in aqueous dispersion. The fluorescence of the BODIPY was also preserved in the aqueous environment. The ratiometric PL detection technique was demonstrated by using toluene and 1-octanol as model compounds of crude oil. The optimal synthesis conditions were found to give NPs with a diameter of ~100 nm, which is suitable for transport through porous oil reservoir structures. The cytotoxicity of the NPs was confirmed to be very low for human lung cell and fish cell lines. These findings demonstrate the potential of the NPs to replace the hazardous chemicals used to estimate the residual oil saturation. Moreover, the ratiometric PL detection technique is anticipated to be of benefit in other fields, such as biotechnology, medical diagnostics, and environmental monitoring, where a reliable and safe detection of a liquid organic phase is needed.
Wiley-VCH
2024
2016
2023