Browsing Institutt for geofag by Title

Now showing items 12-31 of 2342

  • A 16-year record (2002–2017) of permafrost, active-layer, and meteorological conditions at the Samoylov Island Arctic permafrost research site, Lena River delta, northern Siberia: an opportunity to validate remote-sensing data and land surface, snow, and permafrost models 
    Boike, Julia; Nitzbon, Jan; Anders, Katharina; Grigoriev, Mikhail N; Bolshiyanov, Dimitri Yu.; Langer, Moritz; Lange, Stephan; Bornemann, Niko; Morgenstern, Anne; Schreiber, Peter; Wille, Christian; Chadburn, Sarah; Gouttevin, Isabelle; Burke, Eleanor; Kutzbach, Lars (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Please read the corrigendum first, before the main paper. Most of the world's permafrost is located in the Arctic, where its frozen organic carbon content makes it a potentially important influence on the global climate ...
  • A 20-year record (1998–2017) of permafrost, active layer and meteorological conditions at a high Arctic permafrost research site (Bayelva, Spitsbergen) 
    Boike, Julia; Juszak, Inge; Lange, Stephan; Chadburn, Sarah; Burke, Eleanor; Paul Overduin, Pier; Roth, Kurt; Ippisch, Olaf; Bornemann, Niko; Stern, Lielle; Gouttevin, Isabelle; Hauber, Ernst; Westermann, Sebastian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Most permafrost is located in the Arctic, where frozen organic carbon makes it an important component of the global climate system. Despite the fact that the Arctic climate changes more rapidly than the rest of the globe, ...
  • A 23 m.y. record of low atmospheric CO2 
    Cui, Ying; Schubert, Brian A.; Jahren, Anne Hope (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract Current atmospheric CO2 concentration is known to be higher than it has been during the past ∼800 k.y. of Earth history, based on direct measurement of CO2 within ice cores. A comparison to the more ...
  • A censored shifted mixture distribution mapping method to correct the bias of daily IMERG satellite precipitation estimates 
    Ma, Qiumei; Xiong, Lihua; Xia, Jun; Xiong, Bin; Yang, Han; Xu, Chong-Yu (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Satellite precipitation estimates (SPE) provide useful input for hydrological modeling. However, hydrological modeling is frequently hindered by large bias and errors in SPE, inducing the necessity for bias corrections. ...
  • A Climatology of Rain-on-Snow Events for Norway 
    Pall, Pardeep; Tallaksen, Lena M.; Stordal, Frode (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Rain-on-snow (ROS) events are multivariate hydrometeorological phenomena that require a combination of rain and snowpack, with complex processes occurring on and within the snowpack. Impacts include floods and landslides, ...
  • A combined stokes drift profile under swell and wind sea 
    Breivik, Øyvind; Christensen, Kai Håkon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract A combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and ...
  • A comparative study of total organic carbon-δ13C signatures in the Triassic–Jurassic transitional beds of the Central European Basin and western Tethys shelf seas 
    Schobben, Martin; Gravendyck, Julia; Mangels, Franziska; Struck, Ulrich; Bussert, Robert; Kürschner, Wolfram Michael; Korn, Dieter; Sander, P Martin; Aberhan, Martin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Stratigraphic studies are an integral component in understanding the chronology of events that led to the end-Triassic mass extinction, by resolving causal relationships between environmental upheavals and biotic response. ...
  • A comparison of lithospheric thickness models 
    Steinberger, Bernhard; Becker, Thorsten W. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    The outermost layer of the solid Earth consists of relatively rigid plates whose horizontal motions are well described by the rules of plate tectonics. Yet, the thickness of these plates is poorly constrained, with different ...
  • A Complementary Streamflow Attribution Framework Coupled Climate, Vegetation and Water Withdrawal 
    Jiang, Shanhu; Zhu, Yongwei; Ren, Liliang; Yan, Denghua; Liu, Ying; Cui, Hao; Wang, Menghao; Xu, Chong-Yu (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    Quantifying the contributions of climate change (CC) and human activities (HA) to streamflow alteration is significant for effective water resources management. However, numerous studies fail to differentiate the individual ...
  • A Consistent Framework for Coupling Basal Friction With Subglacial Hydrology on Hard-Bedded Glaciers 
    Gilbert, Adrien; Gimbert, Florent; Thøgersen, Kjetil; Schuler, Thomas; Kääb, Andreas (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Below hard-bedded glaciers, both basal friction and distributed subglacial drainage are thought to be controlled by a network of cavities. Previous coupled hydro-mechanical models, however, describe cavity-driven friction ...
  • A continental record of the Carnian Pluvial Episode (CPE) from the Mercia Mudstone Group (UK): palynology and climatic implications 
    Baranyi, Viktoria; Miller, Charlotte Sarah; Ruffell, Alastair; Hounslow, Mark W.; Kürschner, Wolfram Michael (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The generally arid Late Triassic climate was interrupted by a wet phase during the mid-Carnian termed the Carnian Pluvial Episode (CPE). Quantitative palynological data from the Mercia Mudstone Group in the Wessex Basin ...
  • A continued role of short-lived climate forcers under the Shared Socioeconomic Pathways 
    Lund, Marianne Tronstad; Aamaas, Borgar; Stjern, Camilla Weum; Klimont, Zbigniew; Berntsen, Terje Koren; Samset, Bjørn Hallvard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Mitigation of non-CO2 emissions plays a key role in meeting the Paris Agreement ambitions and sustainable development goals. Implementation of respective policies addressing these targets mainly occur at sectoral and ...
  • A convolutional neural network approach to deblending seismic data 
    Sun, Jing; Slang, Sigmund; Elboth, Thomas; Greiner, Thomas Larsen; McDonald, Steven; Gelius, Leiv-J. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    For economic and efficiency reasons, blended acquisition of seismic data is becoming increasingly commonplace. Seismic deblending methods are computationally demanding and normally consist of multiple processing steps. ...
  • A Critical Review of Molybdenite 187Re Parent-187Os Daughter Intra-Crystalline Decoupling in Light of Recent In Situ Micro-Scale Observations 
    Zimmerman, Aaron; Yang, Gang; Stein, Holly Jayne; Hannah, Judith L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Two recent advances in instrumentation convey rhenium and osmium elemental and isotopic distribution in molybdenite at the micro-scale: (1) NanoSIMS imaging which reveals heterogeneities that could preclude micro-scale ...
  • A data-driven model for Fennoscandian wildfire danger 
    Bakke, Sigrid Jørgensen; Wanders, Niko; Van Der Wiel, Karin; Tallaksen, Lena M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Wildfires are recurrent natural hazards that affect terrestrial ecosystems, the carbon cycle, climate and society. They are typically hard to predict, as their exact location and occurrence are driven by a variety of ...
  • A dataset for predicting cloud cover over Europe 
    Svennevik, Hanna; Hicks, Steven; Riegler, Michael; Storelvmo, Trude; Hammer, Hugo Lewi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Abstract Clouds are important factors when projecting future climate. Unfortunately, future cloud fractional cover (the portion of the sky covered by clouds) is associated with significant uncertainty, making climate ...
  • A dataset of direct observations of sea ice drift and waves in ice 
    Rabault, Jean; Müller, Malte; Voermans, Joey; Brazhnikov, Dmitry; Turnbull, Ian; Marchenko, Aleksey; Biuw, Martin; Nose, Takehiko; Waseda, Takuji; Johansson, Malin; Breivik, Øyvind; Sutherland, Graig; Hole, Lars Robert; Johnson, Mark; Jensen, Atle; Gundersen, Olav; Kristoffersen, Yngve; Babanin, Alexander; Tedesco, Paulina Souza; Christensen, Kai Håkon; Kristiansen, Martin; Hope, Gaute; Kodaira, Tsubasa; Martins de Aguiar, Victor Cesar; Taelman, Catherine Cecilia A; Quigley, Cornelius Patrick; Filchuk, Kirill; Mahoney, Andrew R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Variability in sea ice conditions, combined with strong couplings to the atmosphere and the ocean, lead to a broad range of complex sea ice dynamics. More in-situ measurements are needed to better identify the phenomena ...
  • A detailed analysis of the Gl 486 planetary system 
    Caballero, J.A.; González-Álvarez, E.; Brady, M.; Trifonov, T.; Ellis, T.G.; Dorn, C.; Cifuentes, C.; Molaverdikhani, K.; Bean, J.L.; Boyajian, T.; Rodríguez, E.; Sanz-Forcada, J.; Zapatero Osorio, Osorio; Abia, C.; Amado, P.J.; Anugu, N.; Béjar, V.J.S.; Davies, C.L.; Dreizler, S.; Dubois, F.; Ennis, J.; Espinoza, N.; Farrington, C.D.; López, A. García; Gardner, T.; Hatzes, A.P.; Henning, Th.; Herrero, E.; Herrero-Cisneros, E.; Kaminski, A.; Kasper, D.; Klement, R.; Kraus, S.; Labdon, A.; Lanthermann, C.; Le Bouquin, Bouquin; González, M. J. Lópej; Luque, R.; Mann, A.W.; Marfil, E.; Monnier, J.D.; Montes, D.; Morales, J.C.; Pallé, E.; Pedraz, S.; Quirrenbach, A.; Reffert, S.; Reiners, A.; Ribas, I.; Rodríguez-López, C.; Schaefer, G.; Schweitzer, A.; Seifahrt, A.; Setterholm, B.R.; Shan, Yutong; Shulyak, D.; Solano, E.; Sreenivas, K.R.; Stefánsson, G.; Stürmer, J.; Tabernero, H.M.; Tal-Or, L.; Ten Brummelaar, Brummelaar; Vanaverbeke, S.; Von Braun, Braun; Youngblood, A.; Zechmeister, M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Context . The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with a warm transiting rocky planet of about 1.3 R ⊕ and 3.0 M ⊕ . It is ideal for both transmission and ...
  • A digital compilation of structural and magmatic elements of the mid-Norwegian continental margin (Version 1.0) 
    Gernigon, Laurent; Zastrozhnov, Dmitrii; Planke, Sverre; Manton, Ben; Abdelmalak, Mohamed Mansour; Olesen, Odleiv; Maharjan, Dwarika; Faleide, Jan Inge; Myklebust, Reidun (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    A new generation of long-offset 2D seismic reflection lines, 2D-cubed seismic volumes, extensive 3D seismic surveys, high-resolution potential field data, and exploration wells has resulted in improved geological mapping ...
  • A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination 
    Mojtabavi, Seyedhamidreza; Wilhelms, Frank; Cook, Eliza; Davies, Siwan M.; Sinnl, Giulia; Skov Jensen, Mathias; Dahl-Jensen, Dorthe; Svensson, Anders; Vinther, Bo; Kipfstuhl, Sepp; Jones, Gwydion; Karlsson, Nanna B.; Henrique Faria, Sergio; Gkinis, Vasileios; Astrid Kjær, Helle; Erhardt, Tobias; Berben, Sarah Miche Patricia; Nisancioglu, Kerim Hestnes; Koldtoft, Iben; Olander Rasmussen, Sune (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    This paper provides the first chronology for the deep ice core from the East Greenland Ice-core Project (EGRIP) over the Holocene and the late last glacial period. We rely mainly on volcanic events and common peak patterns ...