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    • Observations of sunlit N2+ aurora at high altitudes during the RENU2 flight 

      Ellingsen, Pål Gunnar; Lorentzen, Dag Arne; Kenward, David; Hecht, James H.; Evans, J. Scott; Sigernes, Fred; Lessard, Marc (Journal article; Peer reviewed, 2021)
      We present measurements of sunlit aurora during the launch of the Rocket Experiment for Neutral Upwelling 2 (RENU2) on the 13 December 2015, 07:34 UTC. The in situ auroral conditions coincide with those of sunlit aurora ...

    • Observations of Turbulence at a Near-Surface Temperature Front in the Arctic Ocean 

      Koenig, Zoé Charlotte; Fer, Ilker; Kolås, Eivind; Fossum, Trygve Olav; Norgren, Petter; Ludvigsen, Martin (Journal article; Peer reviewed, 2020)
      High-resolution ocean temperature, salinity, current, and turbulence data were collected at an Arctic thermohaline front in the Nansen Basin. The front was close to the sea ice edge and separated the cold and fresh surface ...

    • Observed Changes in the Arctic Freshwater Outflow in Fram Strait 

      Karpouzoglou, Theodoros; de Steur, Laura; Smedsrud, Lars Henrik; Sumata, Hiroshi (Journal article; Peer reviewed, 2022)
      We have updated time series of liquid fresh water transport (FWT) in the East Greenland Current (EGC) in the western Fram Strait with mooring observations since 2015. Novel data have been used to correct earlier estimates ...

    • Observer agreement of imaging measurements used for evaluation of dentofacial deformity in juvenile idiopathic arthritis 

      Fischer, Johannes Maria; Halbig, Josefine Mareile; Augdal, Thomas Angell; Angenete, Oskar W; Stoustrup, Peter; Kristensen, Kasper Dahl; Skeie, Marit Slåttelid; Tylleskär, Karin; Rosén, Annika; Shi, Xie-Qi; Rosendahl, Karen (Journal article; Peer reviewed, 2022)
      Objectives: To examine the precision of imaging measures commonly used to assess mandibular morphology in children and adolescents with juvenile idiopathic arthritis (JIA). Secondly, to compare cone-beam computed tomography ...

    • Observing Antarctic Bottom Water in the Southern Ocean 

      Silvano, Alessandro; Purkey, Sarah; Gordon, Arnold L.; Castagno, Pasquale; Stewart, Andrew L.; Rintoul, Stephen R.; Foppert, Annie; Gunn, Kathryn L.; Herraiz-Borreguero, Laura; Aoki, Shigeru; Nakayama, Yoshihiro; Naveira Garabato, Alberto C.; Spingys, Carl; Akhoudas, Camille Hayatte; Sallée, Jean-Baptiste; de Lavergne, Casimir; Abrahamsen, E. Povl; Meijers, Andrew J. S.; Meredith, Michael P.; Zhou, Shenjie; Tamura, Takeshi; Yamazaki, Kaihe; Ohshima, Kay I.; Falco, Pierpaolo; Budillon, Giorgio; Hattermann, Tore; Janout, Markus A.; Llanillo, Pedro; Bowen, Melissa M.; Darelius, Elin Maria K.; Østerhus, Svein; Nicholls, Keith W.; Stevens, Craig; Fernandez, Denise; Cimoli, Laura; Jacobs, Stanley S.; Morrison, Adele K.; Hogg, Andrew McC.; Haumann, F. Alexander; Mashayek, Ali; Wang, Zhaomin; Kerr, Rodrigo; Williams, Guy D.; Lee, Won Sang (Journal article; Peer reviewed, 2023)
      Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the ...

    • Observing atmospheric convection with dual-scanning lidars 

      Duscha, Christiane Anabell; Palenik, Juraj; Spengler, Thomas; Reuder, Heinrich Joachim (Journal article; Peer reviewed, 2023)
      While convection is a key process in the development of the atmospheric boundary layer, conventional meteorological measurement approaches fall short in capturing the evolution of the complex dynamics of convection. To ...

    • Observing Music Therapy in Dementia: Repeated Single-case Studies Assessing Well-being and Sociable Interaction 

      Madsø, Kristine Gustavsen; Molde, Helge; Hynninen, Kia Minna; Nordhus, Inger Hilde Norunn Gjøsæther (Journal article; Peer reviewed, 2022)
      Objectives: This study compared behavioral expressions of momentary well-being and sociable behavior toward significant others during music therapy and regular social interaction. Methods: A 10-week active music therapy ...

    • Occupation-related factors affecting the health of migrants working during the COVID-19 pandemic – a qualitative study in Norway 

      Benavente Velando, Pierina Alexandra; Ronda, Elena; Diaz Perez, Esperanza (Journal article; Peer reviewed, 2023)
      Background The effects of the COVID-19 pandemic were more pronounced among migrants than in the majority population and went beyond those directly caused by the virus. Evidence suggests that this overburden is due to ...

    • Occupational Benzene Exposure in the Norwegian Offshore Petroleum Industry, 2002-2018 

      Ridderseth, Hilde; Daltveit, Dagrun Slettebø; Hollund, Bjørg Eli; Kirkeleit, Jorunn; Kromhout, H; Kruger, K; Austgulen, LT; Bråtveit, Magne (Journal article; Peer reviewed, 2022)
      Purpose Workers on offshore petroleum installations are at risk of being exposed to benzene which is carcinogenic to humans. The present study aimed to assess the time trend of full-shift benzene exposure from 2002 to ...

    • Occupational exposure to air pollutants emitted from in situ burning of offshore oil spills: a large-scale field study 

      Szwangruber, Marta Katarzyna; Gjesteland, Ingrid; Hollund, Bjørg Eli; Faksness, Liv Guri; Taban, Ingrid Christina; Holbu, Jan Willie; Dolva, Hilde; Bråtveit, Magne (Journal article; Peer reviewed, 2022)
      Background: In-situ burning (ISB) could be an effective cleanup method during spills. This study aims to study occupational exposure to pollutants emitted from offshore, large-scale ISB-experiments among personnel on ...

    • Occurrence and phenomenology of hallucinations in the general population: A large online survey 

      Linszen, Mascha M. J.; de Boer, Janna N.; Schutte, Maya J. L.; Begemann, Marieke J. H.; de Vries, Jacqueline; Koops, Sanne; Blom, Renske E.; Bohlken, Marc M.; Heringa, Sophie M.; Blom, Jan Dirk; Sommer, Iris Else Clara (Journal article; Peer reviewed, 2022)
      Although epidemiological studies report that hallucinations occur in 6–15% of the general population, little is known about their phenomenology. To overcome this paucity, this study investigates the phenomenological ...

    • Occurrence and severity of myasthenic crisis in an unselected Turkish cohort of patients with myasthenia gravis 

      Ozyurt Kose, Selen; Nazli, Ezgi; Tutkavul, Kemal; Gilhus, Nils Erik (Journal article; Peer reviewed, 2023)
      Myasthenia gravis (MG) is a disorder of the neuromuscular junction that can deteriorate into myasthenic crisis, involving weakness of bulbar and respiratory muscles. In this study, we describe the clinical manifestations ...

    • Occurrence of salmonid alphavirus and piscine orthoreovirus-1 infections in migrating salmon (Salmo salar L.) post-smolt in western Norway 

      Madhun, Abdullah Sami; Nilsen, Rune; Barlaup, Bjørn Torgeir; Karlsen, Ørjan; Karlsbakk, Egil Erlingsson (Journal article; Peer reviewed, 2023)
      Viral diseases are a serious problem in Atlantic salmon (Salmo salar L.) farming in Norway, often leading to reduced fish welfare and increased mortality. Disease outbreaks in salmon farms may lead to spread of viruses to ...

    • Occurrence Statistics of Horse Collar Aurora 

      Bower, G.E.; Milan, Stephen Eric; Paxton, L.J.; Anderson, B.J. (Journal article; Peer reviewed, 2022)
      Horse collar aurora (HCA) are an auroral feature where the dawn and dusk sector auroral oval moves polewards and the polar cap becomes teardrop shaped. They form during prolonged periods of northward interplanetary magnetic ...

    • Ocean Biogeochemical Predictions—Initialization and Limits of Predictability 

      Fransner, Filippa; Counillon, Francois; Bethke, Ingo; Tjiputra, Jerry; Samuelsen, Annette; Nummelin, Aleksi; Olsen, Are (Journal article; Peer reviewed, 2020)
      Predictions of ocean biogeochemistry, such as primary productivity and CO2 uptake, would help to understand the changing marine environment and the global climate. There is an emerging number of studies where initialization ...

    • Ocean biogeochemistry in the Norwegian Earth System Model version 2 (NorESM2) 

      Tjiputra, Jerry; Schwinger, Jörg; Bentsen, Mats; Morée, Anne; Gao, Shuang; Bethke, Ingo; Heinze, Christoph; Goris, Nadine; Gupta, Alok Kumar; He, Yan-Chun; Oliviè, Dirk Jan Leo; Seland, Øyvind; Schulz, Michael (Journal article; Peer reviewed, 2020)
      The ocean carbon cycle is a key player in the climate system through its role in regulating the atmospheric carbon dioxide concentration and other processes that alter the Earth's radiative balance. In the second version ...

    • Ocean literacy and surfing: Understanding how interactions in coastal ecosystems inform blue space user’s awareness of the ocean 

      Fox, Natalie; Marshall, Jamie; Dankel, Dorothy Jane (Journal article; Peer reviewed, 2021-05-28)
      Intergovernmental policy is targeting public ocean literacy to help achieve the societal changes needed to reach a sustainable ocean agenda within a 10-year timeframe. To create a culture of care for the ocean, which is ...

    • Ocean Mesoscale Variability: A Case Study on the Mediterranean Sea From a Re-Analysis Perspective 

      Bonaduce, Antonio; Cipollone, Andrea; Johannessen, Johnny Andre; Staneva, Joanna; Raj, Roshin Pappukutty; Aydogdu, Ali (Journal article; Peer reviewed, 2021)
      The mesoscale variability in the Mediterranean Sea is investigated through eddy detection techniques. The analysis is performed over 24 years (1993–2016) considering the three-dimensional (3D) fields from an ocean re-analysis ...

    • Ocean wave tracing v.1: a numerical solver of the wave ray equations for ocean waves on variable currents at arbitrary depths 

      Halsne, Trygve; Christensen, Kai Håkon; Hope, Gaute; Breivik, Øyvind (Journal article; Peer reviewed, 2023)
      Lateral changes in the group velocity of waves propagating in oceanic or coastal waters cause a deflection in their propagation path. Such refractive effects can be computed given knowledge of the ambient current field ...

    • Oceanic forcing of the global warming slowdown in multi-model simulations 

      Xu, Xinping; He, Shengping; Furevik, Tore; Gao, Yongqi; Wang, Huijun; Li, Fei; Ogawa, Fumiaki (Journal article; Peer reviewed, 2020)
      Abstract Concurrent with the slowdown of global warming during 2002–2013, the wintertime land surface air temperatures over Eurasia, North America, Africa, Australia, South America, and Greenland experienced notable ...