Publikasjoner

Mesosphere-Stratosphere-Troposphere coupling during weak and strong vortex events. NILU F

Orsolini, Y. J.

Mesosphere/Stratosphere coupling during major sudden warmings.

Orsolini, Y.

Mesosphere/Stratosphere Coupling during stratospheric warmings.

Orsolini, Y.

Mesospheric intrusion and anomalous chemistry during and after a major stratospheric sudden warming.

Kvissel, O.-K.; Orsolini, Y.J.; Stordal, F.; Limpasuvan, V.; Richter, J.H.; Marsh, D.R.

Mesospheric intrusion and anomalous chemistry during and after a major stratospheric sudden warming. NILU F

Kvissel, O.-K.; Limpasuvan, V.; Orsolini, Y.; Stordal, F.; Richter, J.

Mesospheric nitric acid enhancements during energetic electron precipitation events simulated by WACCM‐D

Orsolini, Yvan; Smith-Johnsen, Christine; Marsh, Daniel R.; Stordal, Frode; Rodger, Craig J.; Verronen, Pekka T.; Clilverd, Mark A.

While observed mesospheric polar nitric acid enhancements have been attributed to energetic particle precipitation through ion cluster chemistry in the past, this phenomenon is not reproduced in current whole‐atmosphere chemistry‐climate models. We investigate such nitric acid enhancements resulting from energetic electron precipitation events using a recently developed variant of the Whole Atmosphere Community Climate Model (WACCM) that includes a sophisticated ion chemistry tailored for the D‐layer of the ionosphere (50–90 km), namely, WACCM‐D. Using the specified dynamics mode, that is, nudging dynamics in the troposphere and stratosphere to meteorological reanalyses, we perform a 1‐year‐long simulation (July 2009–June 2010) and contrast WACCM‐D with the standard WACCM. Both WACCM and WACCM‐D simulations are performed with and without forcing from medium‐to‐high energy electron precipitation, allowing a better representation of the energetic electrons penetrating into the mesosphere. We demonstrate the effects of the strong particle precipitation events which occurred during April and May 2010 on nitric acid and on key ion cluster species, as well as other relevant species of the nitrogen family. The 1‐year‐long simulation allows the event‐related changes in neutral and ionic species to be placed in the context of their annual cycle. We especially highlight the role played by medium‐to‐high energy electrons in triggering ion cluster chemistry and ion‐ion recombinations in the mesosphere and lower thermosphere during the precipitation event, leading to enhanced production of nitric acid and raising its abundance by 2 orders of magnitude from 10−4 to a few 10−2 ppb.

Metabolic gene variants associated with chromosomal aberrations in healthy humans.

Hemminki, K.; Frank, C.; Försti, A.; Musak, L.; Kazimirova, A.; Barancokova, M.; Horska, A.; Vymetalkova, V.; Smerhovsky, Z.; Naccarati, A.; Soucek, P.; Vodickova, L.; Buchancova, J.; Smolkova, B.; Dusinska, M.; Vodicka, P.

Metadata guidelines for the ESA Campaign Data Base (CDB). Version 0.02. NILU OR

Krognes, T.; Walker, S.E.; Vik, A.F.

Metal pollution around Norwegian industries studied by analysis of naturally growing moss samples. 2015 survey. NILU report

Steinnes, E.; Uggerud, H. T.

On request from the Norwegian Environment Agency, a survey of atmospheric deposition of heavy metals around industrial enterprises in Norway has been carried out. The participation was voluntary and 22 industries located at 17 different sites financed their own participation. The survey is based on analysis of samples of naturally growing moss collected around the
enterprises during the summer of 2015 and includes 57 different elements. For a majority of the sites this survey is a followup of corresponding surveys carried out in 2000, 2005, and 2010. In general the results show that deposition of heavy metals close to the industries depends closely on the industrial processes used as well as the local topographic and meteorological conditions. The results are evaluated relative to corresponding background levels in moss in parts of Norway with low impact of air pollution. Like in previous surveys, the generally most polluted industrial location is Mo i Rana, followed by Odda. At most sites only minor general improvement is observed since the previous survey in 2010.

Metaller i næringsmidler, kroppspleieprodukter og kosmetikk. Bestemmelse av aluminium, kadmium og barium. NILU OR

Uggerud, H.T.; Pfaffhuber, K.A.; Vadset, M.; Kalvenes, Ø.; Hedevang, E.

Rapporten inneholder resultater fra bestemmelse av aluminium og kadmium i ulike næringsmidler, samt aluminium og barium i diverse kosmetikk og kroppspleieprodukter.

Metaller, PCB, PAH og dioksiner i mose i Sør-Varanger. Moseundersøkelser 2008, 2015 og 2020

Berglen, Tore Flatlandsmo; Uggerud, Hilde Thelle; Schlabach, Martin; Eckhardt, Sabine; Enge, Ellen Katrin; Bjørklund, Morten; Pfaffhuber, Katrine Aspmo; Aandahl, Tone R.; Fjelldal, Erling

I 2008 samlet Svanhovd Miljøsenter inn mose ved 11 lokaliteter i grenseområdene mot Russland som NILU analyserte for 11 metaller, PCB, PAH og dioksiner. Formålet var å undersøke om det var andre kilder til forurensning i grenseområdene enn gruvedrift og smelteverksindustri. Prøvetaking og analyse ble gjentatt av NILU i 2015 og 2020, men kun for 60 (2015) og 56 (2020) metaller. For spormetallene Ni, Cu, Co og As er det et klart mønster med forhøyede konsentrasjoner nedstrøms Nikel og Zapolyarnyj. Organiske miljøgifter viser lave konsentrasjoner.

NILU

Metan slipper ikke ut av polhavet om sommeren.

Solbakken, C.F.; Sojtaric, M.

Metanlekkasjen fra Nord Stream

Platt, Stephen Matthew (intervjuobjekt)