Publikasjoner

Technical note: The Lagrangian particle dispersion model FLEXPART version 6.2.

Stohl, A.; Forster, C.; Frank, A.; Seibert, P.; Wotawa, G.

Technical recommendations to perform the alkaline standard and enzyme-modified comet assay in human biomonitoring studies

Azqueta, Amaya; Muruzabal, Damian; Boutet-Robinet, Elisa; Milic, Mirta; Dusinska, Maria; Brunborg, Gunnar; Møller, Peter; Collins, Andrew R.

Technical specification for establishing the Reference Laboratory. Abu Dhabi Air Monitoring Network supervision. NILU OR

Tørnkvist, K.K.

Technological Implementation Plan (Draft)

Fiebig, Markus

Teleconnection between sea ice in the Barents Sea in June and the Silk Road, Pacific–Japan and East Asian rainfall patterns in August

He, Shengping; Gao, Yongqi; Furevik, Tore; Wang, Huijun; Li, Fei

In contrast to previous studies that have tended to focus on the influence of the total Arctic sea-ice cover on the East Asian summer tripole rainfall pattern, the present study identifies the Barents Sea as the key region where the June sea-ice variability exerts the most significant impacts on the East Asian August tripole rainfall pattern, and explores the teleconnection mechanisms involved. The results reveal that a reduction in June sea ice excites anomalous upward air motion due to strong near-surface thermal forcing, which further triggers a meridional overturning wave-like pattern extending to midlatitudes. Anomalous downward motion therefore forms over the Caspian Sea, which in turn induces zonally oriented overturning circulation along the subtropical jet stream, exhibiting the east–west Rossby wave train known as the Silk Road pattern. It is suggested that the Bonin high, a subtropical anticyclone predominant near South Korea, shows a significant anomaly due to the eastward extension of the Silk Road pattern to East Asia. As a possible descending branch of the Hadley cell, the Bonin high anomaly ultimately triggers a meridional overturning, establishing the Pacific–Japan pattern. This in turn induces an anomalous anticyclone and cyclone pair over East Asia, and a tripole vertical convection anomaly meridionally oriented over East Asia. Consequently, a tripole rainfall anomaly pattern is observed over East Asia. Results from numerical experiments using version 5 of the Community Atmosphere Model support the interpretation of this chain of events.

Science Press

Temperature dependent secondary organic aerosol formation from terpenes and aromatics.

Svendby, T.M.; Lazaridis, M.; Tørseth, K.

Temporal and cross-sectional associations of serum per- and polyfluoroalkyl substances (PFAS) and lipids from 1986 to 2016 − The Tromsø study

Coelho, Ana Carolina; Charles, Dolley; Nøst, Therese Haugdahl; Cioni, Lara; Huber, Sandra; Herzke, Dorte; Rylander, Charlotta; Berg, Vivian; Sandanger, Torkjel M

Introduction
Per- and polyfluoroalkyl substances (PFAS) have been linked to effects on human lipid profiles, with several epidemiological studies reporting associations between specific PFAS and blood lipid concentrations. However, these associations have been inconsistent, and most studies have focused on cross-sectional analyses with limited repeated measurements.

Objective
In this study, we investigated associations between serum PFAS concentrations and major blood lipid classes over a 30-year period (1986–2016) and up to five time points. Lipids analyzed included total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and triglycerides (TG).

Methods
This study included 145 participants from The Tromsø Study, Norway, who donated plasma samples three to five times over the study period. Linear mixed-effects (LME) models assessed longitudinal associations between PFAS and lipid classes, while multiple linear regression (MLR) models were used for cross-sectional associations.

Results
LME models demonstrated positive longitudinal associations between perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnDA), perfluorododecanoic acid (PFDoDA), and perfluorotridecanoic acid (PFTrDA) with TC. Additionally, PFOA, PFDA, PFUnDA, PFDoDA, and PFTrDA were associated with LDL-C, and PFUnDA and summed perfluorooctane sulfonate isomers (∑PFOS) with HDL-C. Cross-sectional analyses corroborated positive associations between the six PFAS compounds and TC at least three times, but the LDL-C and HDL-C associations were not confirmed. Summed perfluorooctane sulfonamide isomers (∑PFOSA) showed a negative association with LDL-C longitudinally, but this was not confirmed cross-sectionally. No associations were observed between PFAS and TG, longitudinally or cross-sectionally.

Conclusion
Concentrations of multiple PFAS were positively associated with blood lipids in longitudinal analyses, with the most consistent associations observed between six PFCA compounds and TC. These findings highlight the need for further investigation into these complex associations.

Elsevier

Temporal and spatial trend of perfluoroalkylated substances in harbour porpoise (Phocoena phocoena) livers from Northern Europe. NILU F

Huber, S.; Ahrens, L.; Bårdsen, B.J.; Siebert, U.; Bustnes, J.O.; Ebinghaus, R.; Herzke, D.

Temporal and spatial trends in Hg deposition monitored by moss analysis.

Sjøbakk, T. E.; Berg, T.; Steinnes, E.

Temporal and spatial variability of Icelandic dust emissions and atmospheric transport.

Zwaaftink, C. D. G.; Arnalds, Ó.; Dagsson-Waldhauserova, P.; Eckhardt, S.; Prospero, J. M.; Stohl, A.

Temporal constraints on ecosystem management: definitions and examples from Europe's regional seas.

O'Higgins, T.; Cooper, P.; Roth, E.; Newton, A.; Farmer, A.; Goulding, I.C.; Tett, P.

Temporal patterns and tendencies of wildfires in relation to climate

Evangeliou, Nikolaos