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An Unprecedented Arctic Ozone Depletion Event During Spring 2020 and Its Impacts Across Europe
The response of the ozone column across Europe to the extreme 2020 Arctic ozone depletion was examined by analyzing ground-based observations at 38 European stations. The ozone decrease at the northernmost site, Ny-Ålesund (79°N) was about 43% with respect to a climatology of more than 30 years. The magnitude of the decrease declined by about 0.7% deg−1 moving south to reach nearly 15% at 40°N. In addition, it was found that the variations of the ozone column at each of the selected stations in March-May were similar to those observed at Ny-Ålesund but with a delay increasing to about 20 days at mid-latitudes with a gradient of approximately 0.5 days deg−1. The distributions of reconstructed ozone column anomalies over a sector covering a large European area show decreasing ozone that started from the north at the beginning of April 2020 and spread south. Such behavior was shown to be similar to that observed after the Arctic ozone depletion in 2011. Stratospheric dynamical patterns in March–May 2011 and during 2020 suggested that the migration of ozone-poor air masses from polar areas to the south after the vortex breakup caused the observed ozone responses. A brief survey of the ozone mass mixing ratios at three stratospheric levels showed the exceptional strength of the 2020 episode. Despite the stronger and longer-lasting Arctic ozone loss in 2020, the analysis in this work indicates a similar ozone response at latitudes below 50°N to both 2011 and 2020 phenomena.
American Geophysical Union (AGU)
2023
2005
2009
Analyse av bromerte flammehemmere, PCB og pesticider inkludert toksafen i polarmåke (Larus hyperboreus) fra Bjørnøya. Statlig program for foururensingsovervåking. Rapport 813/01. TA-1781/2001
2001
Analyse av sedimenter: Kildesporing av brommerte flammehemmere i Ålesundområdet. NIVA-rapport, 5674-2008
2008
2005
2009
2005
Analyses of selected organic contaminants and metals in coffee cups. Technical report.
NILU har på vegne av Forbrukerrådet, bestemt innholdet av organiske forurensninger og tungmetaller i utlekkingsvæske fra utvalgte kaffekopper. Simuleringen av lekkasjen er basert på en sammenstilling av metodene beskrevet i NS-EN-1186-9 og NS-EN-13130-1. De instrumentelle analysemetodene som ble benyttet var allerede etablert hos NILU og NIVA. En rekke forskjellige organiske forurensninger og metaller har blitt funnet i spormengder i de ulike produktene.
NILU
2018
Analyses of selected organic contaminants and metals in drinking bottles. Technical report.
On behalf of Norwegian Consumer Council NILU has conducted analyses of organic contaminants and metals in the leachate from selected drinking bottles. The simulation of the leakage is conducted based on a compilation of the methods described within NS-EN-1186-9 and NS-EN-13130-1. The instrumental analytical methods used were already established at NILU and NIVA. A number of different organic contaminants and metals have been found in trace amounts in the different products.
NILU
2018
2024
2005
Analysis and review of air quality standards: Deliverable report 2.4. NILU OR
This report provides an overview of international and national air quality standards and guidelines from different environmental agencies, such as the European Union (EU), US Environmental Protection Agency (EPA), World Health Organization (WHO), United Arab Emirates (UAE) and some other selected countries.
2011
2002
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2013
2007
2004