Blar i Faculty of Mathematics and Natural Sciences på tittel

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    • Winter Arctic Amplification at the synoptic timescale, 1979–2018, its regional variation and response to tropical and extratropical variability 

      Hall, Richard; Hanna, Edward; Chen, Linling (Journal article; Peer reviewed, 2021)
      We investigate winter Arctic Amplification (AA) on synoptic timescales and at regional scales using a daily version of the Arctic Amplification Index (AAI) and examine causes on a synoptic scale. The persistence, frequency ...

    • Winter circulation anomalies in 2009/10 & 2013/14, and associated forcing mechanisms 

      Asbjørnsen, Helene (Master thesis, 2016-05-31)
      Recent cases of severe winter weather in midlatitude regions have been linked to large-scale atmospheric circulation anomalies, but the physical mechanisms driving such anomalies are poorly understood. In this study the ...

    • Winter storms accelerate the demise of sea ice in the Atlantic Sector of the Arctic Ocean 

      Graham, Robert M.; Itkin, Polona; Meyer, Amelie; Sundfjord, Arild; Spreen, Gunnar; Smedsrud, Lars H.; Liston, Glen E.; Cheng, Bin; Cohen, Lana; Divine, Dmitry; Fer, Ilker; Fransson, Agneta; Gerland, Sebastian; Haapala, Jari; Hudson, Stephen R.; Johansson, Malin; King, Jennifer A.; Merkouriadi, Ioanna; Peterson, Algot Kristoffer; Provost, Christine; Randelhoff, Achim; Rinke, Annette; Rösel, Anja; Sennechael, Nathalie; Walden, Von P.; Duarte, Pedro; Assmy, Philipp; Steen, Harald; Granskog, Mats A. (Peer reviewed; Journal article, 2019-06-25)
      A large retreat of sea-ice in the ‘stormy’ Atlantic Sector of the Arctic Ocean has become evident through a series of record minima for the winter maximum sea-ice extent since 2015. Results from the Norwegian young sea ICE ...

    • Winter Vertical Diffusion Rates in the Arctic Ocean, Estimated From 7Be Measurements and Dissipation Rate Profiles 

      Schulz, K.; Kadko, D.; Mohrholz, V.; Stephens, M.; Fer, Ilker (Journal article; Peer reviewed, 2023)
      Ocean turbulent mixing is a key process affecting the uptake and redistribution of heat, carbon, nutrients, oxygen and other dissolved gasses. Vertical turbulent diffusivity sets the rates of water mass transformations and ...

    • A winter-to-summer transition of bacterial and archaeal communities in Arctic sea ice 

      Thiele, Stefan; Storesund, Julia Endresen; Férnandez-Méndez, Mar; Assmy, Philipp; Øvreås, Lise (Journal article; Peer reviewed, 2022-08-15)
      The Arctic is warming 2–3 times faster than the global average, leading to a decrease in Arctic sea ice extent, thickness, and associated changes in sea ice structure. These changes impact sea ice habitat properties and ...

    • Winters are changing: snow effects on Arctic and alpine tundra ecosystems 

      Rixen, Christian; Høye, Toke Thomas; Macek, Petr; Aerts, Rien; Alatalo, Juha; Andeson, Jill; Arnold, Pieter; Barrio, Isabel C.; Bjerke, Jarle W.; Björkman, Mats P.; Blok, Daan; Blume-werry, Gesche; Boike, Julia; Bokhorst, Stef; Carbognani, Michele; Christiansen, Casper Tai; Convey, Peter; Cooper, Elisabeth J.; Cornelissen, J. Hans C.; Coulson, Stephen; Dorrepaal, Ellen; Elberling, Bo; Elmendorf, Sarah; Elphinstone, Cassandra; Forte, T'ai Gladys Whittingham; Frei, Esther R.; Geange, Sonya Rita; Gehrmann, Friederike; Gibson, Casey; Grogan, Paul; Rechsteiner, Aud Helen Halbritter; Harte, John; Henry, Greg H.R.; Inouye, David W.; Irwin, Rebecca; Jespersen, Gus; Jónsdóttir, Ingibjörg Svala; Jung, Ji Young; Klinges, David H.; Kudo, Gaku; Lämsä, Juho; Lee, Hanna; Lembrechts, Jonas; Lett, Signe; Lynn, Joshua Scott; Mann, Hjalte Mads; Mastepanov, Mikhail; Morse, Jennifer; Myers-Smith, Isla; Olofsson, Johan; Semenchuk, Philipp; Vandvik, Vigdis (Journal article; Peer reviewed, 2022)
      Snow is an important driver of ecosystem processes in cold biomes. Snow accumulation determines ground temperature, light conditions and moisture availability during winter. It also affects the growing season’s start and ...

    • Wintertime cyclone/anticyclone activity over China and its relation to upper tropospheric jets 

      Chen, Lei; Tan, Benkui; Kvamstø, Nils Gunnar; Johannessen, Ola M. (Peer reviewed; Journal article, 2014-01-16)
      In this study, the wintertime cyclone/anticyclone activity and its variability over China are examined based on the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis ...

    • Wintertime fCO2 variability in the subpolar North Atlantic since 2004 

      Fröb, Friederike; Olsen, Are; Becker, Meike; Chafik, Leon Martin; Johannessen, Truls; Reverdin, Gilles; Omar, Abdirahman (Peer reviewed; Journal article, 2019)
      Winter data of surface ocean temperature (SST), salinity (SSS) and CO2 fugacity (fCO2) collected on the VOS M/V Nuka Arctica in the subpolar North Atlantic between 2004 and 2017 are used to establish trends, drivers, and ...

    • Winter−spring transition in the subarcticAtlantic: microbial response to deep mixingand pre-bloom production 

      Paulsen, Maria Lund; Riisgaard, Karen; Frede, Thingstad; St. John, Mike; Nielsen, Torkel Gissel (Peer reviewed; Journal article, 2015-09-23)
      In temperate, subpolar and polar marine systems, the classical perception is that diatoms initiate the spring bloom and thereby mark the beginning of the productive season. Contrary to this view, we document an active ...

    • WiRoM: a High-level Mission Planning System for Heterogeneous Multi-Robot Simulations 

      Grutle, Joakim Moss (Master thesis, 2020-06)
      Robots are complicated machines. Today we have a lot of different types of robots, each with different types of sensors and actuators which have their own practical (and impractical) applications. Utilizing the benefits ...

    • Within-patient and global evolutionary dynamics of Klebsiella pneumoniae ST17 

      Hetland, Marit; Hawkey, Jane; Bernhoff, Eva; Bakksjø, Ragna-Johanne; Kaspersen, Håkon; Rettedal, Siren; Sundsfjord, Arnfinn; Holt, Kathryn E.; Löhr, Iren Høyland (Journal article; Peer reviewed, 2023)
      Klebsiella pneumoniae sequence type (ST) 17 is a global problem clone that causes multidrug-resistant (MDR) hospital infections worldwide. In 2008–2009, an outbreak of MDR ST17 occurred at a neonatal intensive care unit ...

    • Within-species variation in the gut microbiome of medaka (Oryzias latipes) is driven by the interaction of light intensity and genetic background 

      Evangelista, Charlotte; Kamenova, Stefaniya; Diaz Pauli, Beatriz; Sandkjenn, Joakim; Vøllestad, Leif Asbjørn; Edeline, Eric; Trosvik, Pål; de Muinck, Eric (Journal article; Peer reviewed, 2023)
      Unravelling evolution-by-environment interactions on the gut microbiome is particularly relevant considering the unprecedented level of human-driven disruption of the ecological and evolutionary trajectories of species. ...

    • Without a pinch of salt: effect of low salinity on eggs and nauplii of the salmon louse (Lepeophtheirus salmonis) 

      Borchel, Andreas; Heggland, Erna Irene; Nilsen, Frank (Journal article; Peer reviewed, 2023)
      The salmon louse is an economically important parasite on Atlantic salmon and poses a major threat to aquaculture. Several treatment methods have lost their effect due to resistance development in the lice. A rather new ...

    • WMO Global Annual to Decadal Climate Update A Prediction for 2021-25 

      Hermanson, Leon; Smith, Doug; Seabrook, Melissa; Bilbao, Roberto; Doblas-Reyes, Francisco; Tourigny, Etienne; Lapin, Vladimir; Kharin, Viatcheslav V.; Merryfield, William J.; Sospedra-Alfonso, Reinel; Athanasiadis, Panos; Nicoli, Dario; Gualdi, Silvio; Dunstone, Nick; Eade, Rosie; Scaife, Adam; Collier, Mark; O'Kane, Terence; Kitsios, Vassili; Sandery, Paul; Pankatz, Klaus; Früh, Barbara; Pohlmann, Holger; Müller, Wolfgang; Kataoka, Takahito; Tatebe, Hiroaki; Ishii, Masayoshi; Imada, Yukiko; Kruschke, Tim; Koenigk, Torben; Karami, Mehdi Pasha; Yang, Shuting; Tian, Tian; Zhang, Liping; Delworth, Tom; Yang, Xiaosong; Zeng, Fanrong; Wang, Yiguo; Counillon, Francois Stephane; Keenlyside, Noel Sebastian; Bethke, Ingo; Lean, Judith; Luterbacher, Jürg; Kolli, Rupa Kumar; Kumar, Arun (Journal article; Peer reviewed, 2022)
      As climate change accelerates, societies and climate-sensitive socioeconomic sectors cannot continue to rely on the past as a guide to possible future climate hazards. Operational decadal predictions offer the potential ...

    • Workflow management systems 

      Imsland, Geir Inge Struen (Master thesis, 2007-12-01)
      This master's thesis gives an insight to workflow technologies used to improve efficiency of business processes. Ways to use such technologies in order to help users through tasks in MIPS (Material Integrated Production ...

    • Working and Learning in a Field Excursion 

      Hole, Torstein Nielsen (Peer reviewed; Journal article, 2018-06)
      This study aimed to discern sociocultural processes through which students learn in field excursions. To achieve this aim, short-term ethnographic techniques were employed to examine how undergraduate students work and ...

    • A Workup Protocol Combined with Direct Application of Quantitative Nuclear Magnetic Resonance Spectroscopy of Aqueous Samples from Large-Scale Steam Explosion of Biomass 

      Løhre, Camilla; Underhaug, Jarl; Brusletto, Rune; Barth, Tanja (Journal article; Peer reviewed, 2021)
      Methods for thermochemical conversion of biomass into renewable energy and materials rapidly increase in range and outreach. A focus on the target product streams for valorization is natural, yet several pretreatment steps ...

    • Wound healing in post-smolt Atlantic salmon (Salmo salar L.) 

      Sveen, Lene Rydal; Timmerhaus, Gerrit; Krasnov, Aleksei; Takle, Harald; Handeland, Sigurd; Ytteborg, Elisabeth (Peer reviewed; Journal article, 2019-03-05)
      Skin biopsies (5 mm) taken from behind the dorsal fin on Atlantic salmon post-smolts were followed over a 2 month period. The healing process was dominated by hemostasis, acute inflammation, and epidermal repair the first ...

    • WSDL Workshop. Semantic web application in HTML5 for the discovery, construction and analysis of workflows 

      Nozal Canadas, Rafael Adolfo (Master thesis, 2013-11-20)
      WSDL-Workshop is a HTML5 web application for the discovery and exploration of web services and for analysing the compatibility between web services. This is the result of a mathematical model developed from WSDL1.1. The ...

    • WSDL Workshop: Semantic web application in HTML5 for the discovery, construction and analysis of workfows 

      Cañadas, Rafael Adolfo Nozal (Master thesis, 2013)
      WSDL-Workshop is a HTML5 web application for the discovery and exploration of web services and for analyzing the compatibility between web services. This is the result of a mathematical model developed from WSDL1.1. The ...