Now showing items 1-20 of 400

    • Can we use ice sheet reconstructions to constrain meltwater for deglacial simulations? 

      Bethke, Ingo; Li, Camille; Nisancioglu, Kerim Hestnes (Journal article, 2012)
      Freshwater pulses from melting ice sheets are thought to be important for driving deglacial climate variability. This study investigates challenges in simulating and understanding deglacial climate evolution within this ...
    • Challenges for transgene detection in landraces and wild relatives: learning from 15 years of debate over GM maize in Mexico 

      Agapito, Sarah Zanon; Wickson, Fern (Peer reviewed; Journal article, 2018)
      Maize is one of the world’s five staple cereals and its traditional varieties constitute a global resource critical to future agricultural development. Fifteen years ago, claims that transgenes had spread into traditional ...
    • Tracing the Imprint of River Runoff Variability on Arctic Water Mass Transformation 

      Lambert, Erwin; Nummelin, Aleksi; Pemberton, Per; Ilicak, Mehmet (Peer reviewed; Journal article, 2019)
      The Arctic Ocean receives a net freshwater input from land and from the atmosphere. This flux of freshwater, along with net surface heat loss, acts to transform the water mass properties of inflowing Atlantic and Pacific ...
    • Sudden emergence of a shallow aragonite saturation horizon in the Southern Ocean 

      Negrete-Garcia, Gabriela; Lovenduski, Nicole; Hauri, Claudine; Krumhardt, Kristen; Lauvset, Siv Kari (Peer reviewed; Journal article, 2019)
      Models project that with current CO2 emission rates, the Southern Ocean surface will be undersaturated with respect to aragonite by the end of this century1,2,3,4. This will result in widespread impacts on biogeochemistry ...
    • ESD Reviews: Climate feedbacks in the Earth system and prospects for their evaluation 

      Heinze, Christoph; Eyring, Veronika; Friedlingstein, Pierre; Jones, Colin; Balkanski, Yves; Collins, William; Fichefet, Thierry; Gao, Shuang; Hall, Alex; Ivanova, Detelina; Knorr, Wolfgang; Knutti, Reto; Löw, Alexander; Ponater, Michael; Schultz, Martin G.; Schulz, Michael; Siebesma, Pier; Teixeira, Joao; Tselioudis, George; Vancoppenolle, Martin (Peer reviewed; Journal article, 2019)
      Earth system models (ESMs) are key tools for providing climate projections under different scenarios of human-induced forcing. ESMs include a large number of additional processes and feedbacks such as biogeochemical cycles ...
    • Surface ocean pH and buffer capacity: past, present and future 

      Jiang, Li-qing; Carter, Brendan R; Feely, Richard A.; Lauvset, Siv Kari; Olsen, Are (Peer reviewed; Journal article, 2019)
      The ocean’s chemistry is changing due to the uptake of anthropogenic carbon dioxide (CO2). This phenomenon, commonly referred to as “Ocean Acidification”, is endangering coral reefs and the broader marine ecosystems. In ...
    • Large loss of CO2 in winter observed across the northern permafrost region 

      Natali, Susan M.; Watts, Jennifer D.; Rogers, Brendan M.; Potter, Stefano; Ludwig, Sarah M.; Selbmann, Anne-Katrin; Sullivan, Patrick F.; Abbott, Benjamin W.; Arndt, Kyla A.; Birch, Leah; Björkman, Mats P.; Bloom, A. Anthony; Celis, Gerardo; Christensen, Torben R.; Christiansen, Casper Tai; Commane, Roisin; Cooper, Elisabeth J.; Crill, Patrick; Czimczik, Claudia; Davydov, Sergey; Du, Jinyang; Egan, Jocelyn E.; Elberling, Bo; Euskirchen, Eugenie S.; Friborg, Thomas; Genet, Hélène; Göckede, Mathias; Goodrich, Jordan P.; Grogan, Paul; Helbig, Manuel; Jafarov, Elchin E.; Jastrow, Julie D.; Kalhori, Aram A. M.; Kim, Yongwon; Kimball, John S.; Kutzbach, Lars; Lara, Mark J.; Larsen, Klaus S.; Lee, Bang-Yong; Liu, Zhihua; Loranty, Michael M.; Lund, Magnus; Lupascu, Massimo; Madani, Nima; Malhotra, Avni; Matamala, Roser; McFarland, Jack; McGuire, A. David; Michelsen, Anders; Minions, Christina; Oechel, Walter C.; Olefeldt, David; Parmentier, Frans-Jan W.; Pirk, Norbert; Poulter, Ben; Quinton, William; Rezanezhad, Fereidoun; Risk, David; Sachs, Torsten; Schaefer, Kevin; Schmidt, Niels M.; Schuur, Edward A. G.; Semenchuk, Philipp R.; Shaver, Gaius; Sonnentag, Oliver; Starr, Gregory; Treat, Claire C.; Waldrop, Mark P.; Wang, Yihui; Welker, Jeffrey; Wille, Christian; Xu, Xiaofeng; Zhang, Zhen; Zhuang, Qianlai; Zona, Donatella (Peer reviewed; Journal article, 2019)
      Recent warming in the Arctic, which has been amplified during the winter1,2,3, greatly enhances microbial decomposition of soil organic matter and subsequent release of carbon dioxide (CO2)4. However, the amount of CO2 ...
    • Large‐scale regional model biases in the extra‐tropical North Atlantic storm track and impacts on downstream precipitation 

      Pontoppidan, Marie Louise Nielsen; Kolstad, Erik Wilhelm; Sobolowski, Stefan Pieter; Sorteberg, Asgeir; Changhai, Liu; Rasmussen, Roy (Peer reviewed; Journal article, 2019)
      Global climate models have circulation biases that the community aims to reduce, for instance through high‐resolution dynamical downscaling. We used the Weather Research and Forecasting model (WRF) to downscale both ...
    • Causes of bias and uncertainty in fracture network analysis 

      Peacock, David; Sanderson, David J.; Bastesen, Eivind; Rotevatn, Atle; Storstein, Tor H (Peer reviewed; Journal article, 2019)
      Fault and fracture networks are analysed to determine the deformation history and to help with such applications as engineering geology and fluidflow modelling. These analyses rely on quantifying such factors as length, ...
    • Eemian Greenland ice sheet simulated with a higher-order model shows strong sensitivity to surface mass balance forcing 

      Plach, Andreas; Nisancioglu, Kerim Hestnes; Langebroek, Petra; Born, Andreas; Le clec'h, Sebastien (Peer reviewed; Journal article, 2019)
      The Greenland ice sheet contributes increasingly to global sea level rise. Its history during past warm intervals is a valuable reference for future sea level projections. We present ice sheet simulations for the Eemian ...
    • Toward a multi-faceted conception of co-production of climate services 

      Bremer, Scott; Wardekker, Arjan; Dessai, Suraje; Sobolowski, Stefan Pieter; Slaattelid, Rasmus Tore; van der Sluijs, Jeroen P (Peer reviewed; Journal article, 2019)
      Increasing numbers of scholars and practitioners appeal to procedural theories of ‘co-production’ as they work to transform climate science into climate services. Most work in this direction theorises co-production as an ...
    • Consistently dated Atlantic sediment cores over the last 40 thousand years 

      Waelbroeck, Claire; Lougheed, Bryan C.; Vazquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel; Dokken, Trond Martin; Hajdas, Irka; Wacker, Lukas; Abbott, Peter; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza; Arz, Helge; Austin, William E.N.; Came, Rosemarie; Carlson, Anders E.; Collins, James A.; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad; Jung, Simon; Knutz, Paul; Lebreiro, Susana; Lund, David C.; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M.; Martínez-Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia; Nürnberg, Dirk; Oppo, Delia; Peck, Victoria; Peeters, Frank J.C.; Penaud, Aurélie; Portilho-Ramos, Rodrigo da Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goni, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C.; Skonieczny, Charlotte; Thornalley, David; Toucanne, Samuel; Rooij, David Van; Vidal, Laurence; Voelker, Antje H.L.; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin (Peer reviewed; Journal article, 2019)
      Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining ...
    • 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 ...
    • Agreement between reconstructed and modeled boreal precipitation of the Last Interglacial 

      Scussolini, Paolo; Bakker, Pepijn; Guo, Chuncheng; Stepanek, Christian; Qiong, Zhang; Braconnot, Pascale; Cao, Jian; Guarino, Maria-Vittoria; Coumou, Dim; Prange, Matthias; Ward, Philip J.; Renssen, Hans; Kageyama, Masa; Otto-Bliesner, Bette; Aerts, Jeroen C.J.H. (Peer reviewed; Journal article, 2019)
      The last extended time period when climate may have been warmer than today was during the Last Interglacial (LIG; ca. 129 to 120 thousand years ago). However, a global view of LIG precipitation is lacking. Here, seven new ...
    • Role of wind stress in driving SST biases in the tropical Atlantic 

      Voldoire, Aurore; Exarchou, Eleftheria; Sánchez-Gómez, Emilia; Demissie, Teferi Dejene; Deppenmeier, Anna-Lena; Frauen, Claudia; Goubanova, Katarina; Hazeleger, Wilco; Keenlyside, Noel; Koseki, Shunya; Prodhomme, Chloé; Shonk, Jonathan; Toniazzo, Thomas; Traoré, Abdoul-Khadre (Peer reviewed; Journal article, 2019)
      Coupled climate models used for long-term future climate projections and seasonal or decadal predictions share a systematic and persistent warm sea surface temperature (SST) bias in the tropical Atlantic. This study attempts ...
    • Influences of Lake Malawi on the spatial and diurnal variability on local precipitation 

      Koseki, Shunya; Mooney, Priscilla A. (Peer reviewed; Journal article, 2019)
      We investigate how the intensity and spatial distribution of precipitation vary around Lake Malawi on a diurnal timescale, which can be valuable information for water resource management in tropical south-eastern African ...
    • A global monthly climatology of total alkalinity: A neural network approach 

      Broullón, Daniel; Perez, F. F.; Velo, Antón; Hoppema, Mario; Olsen, Are Christian Sviggum; Takahashi, Taro; Key, Robert M.; Tanhua, Toste; Gonzales-Davila, Melchor; Jeansson, Emil; Kozyr, Alexander; van Heuven, Steven (Peer reviewed; Journal article, 2019)
      Global climatologies of the seawater CO2 chemistry variables are necessary to assess the marine carbon cycle in depth. The climatologies should adequately capture seasonal variability to properly address ocean acidification ...
    • An oceanic perspective on Greenland’s recent freshwater discharge since 1850 

      Perner, Kerstin; Moros, Matthias; Otterå, Odd Helge; Blanz, Thomas; Schneider, Ralph R.; Jansen, Eystein (Peer reviewed; Journal article, 2019)
      Instrumental data evidence an accelerating freshwater release from Arctic sea ice export and the Greenland Ice Sheet over the past three decades causing cooling and freshening in the subpolar North Atlantic region. However, ...
    • Constraining the oceanic uptake and fluxes of greenhouse gases by building an ocean network of certified stations: The ocean component of the Integrated Carbon Observation System, ICOS-Oceans 

      Steinhoff, Tobias; Gkritzalis, Thanos; Lauvset, Siv Kari; Jones, Stephen Daniel; Schuster, Ute; Olsen, Are; Becker, Meike; Bozzano, Roberto; Brunetti, Fabio; Cantoni, Carolina; Cardin, Vanessa; Diverrès, Denis; Fiedler, Björn; Fransson, Agneta; Giani, Michele; Hartman, Sue; Hoppema, Mario; Jeansson, Emil; Johannessen, Truls; Kitidis, Vassilis; Körtzinger, Arne; Landa, Camilla Stegen; Lefèvre, Nathalie; Luchetta, Anna; Naudts, Lieven; Nightingale, Philip D.; Omar, Abdirahman; Pensieri, Sara; Pfeil, Benjamin; Castano Primo, Rocio; Rehder, Gregor; Rutgersson, Anna; Sanders, Richard; Schewe, Ingo; Siena, Giuseppe; Skjelvan, Ingunn; Soltwedel, Thomas; van Heuven, Steven; Watson, Andrew (Peer reviewed; Journal article, 2019)
      The European Research Infrastructure Consortium “Integrated Carbon Observation System” (ICOS) aims at delivering high quality greenhouse gas (GHG) observations and derived data products (e.g., regional GHG-flux maps) for ...
    • Arctic amplification under global warming of 1.5 and 2 °C in NorESM1-Happi 

      Graff, Lise Seland; Iversen, Trond; Bethke, Ingo; Debernard, Jens Boldingh; Seland, Øyvind; Bentsen, Mats; Kirkevåg, Alf; Li, Camille; Oliviè, Dirk Jan Leo (Peer reviewed; Journal article, 2019)
      Differences between a 1.5 and 2.0 ∘C warmer climate than 1850 pre-industrial conditions are investigated using a suite of uncoupled (Atmospheric Model Intercomparison Project; AMIP), fully coupled, and slab-ocean experiments ...