Now showing items 716-735 of 1005

    • Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources 

      Arnalds, Olafur; Ólafsson, Haraldur; Dagsson-Waldhauserova, Pavla (Peer reviewed; Journal article, 2014-12-02)
      Iceland has extremely active dust sources that result in large-scale emissions and deposition on land and at sea. The dust has a volcanogenic origin of basaltic composition with about 10% Fe content. We used two independent ...
    • Quantifying Errors in Observationally Based Estimates of Ocean Carbon Sink Variability 

      Gloege, Lucas; McKinley, Galen A.; Landschützer, Peter; Fay, Amanda R.; Frölicher, Thomas L.; Fyfe, John; Ilyana, Tatiana; Jones, Stephen Daniel; Lovenduski, Nicole; Rodgers, Keith B.; Schlunegger, Sarah; Takano, Yohei (Journal article; Peer reviewed, 2021)
      Reducing uncertainty in the global carbon budget requires better quantification of ocean CO2 uptake and its temporal variability. Several methodologies for reconstructing air-sea CO2 exchange from pCO2 observations indicate ...
    • Quantifying the contribution of anthropogenic influence to the East Asian winter monsoon in 1960-2012 

      Hao, Xin; He, Shengping; Wang, Huijun; Han, Tingting (Peer reviewed; Journal article, 2019-08-07)
      The East Asian winter monsoon (EAWM) is greatly influenced by many factors that can be classified as anthropogenic forcing and natural forcing. Here we explore the contribution of anthropogenic influence to the change in ...
    • Quantifying the Stable Water Isotopologue Exchange Between the Snow Surface and Lower Atmosphere by Direct Flux Measurements 

      Wahl, Sonja; Steen-Larsen, Hans Christian; Reuder, Joachim; Hörhold, Maria (Journal article; Peer reviewed, 2021)
      Surface processes in high latitudes play an important role in global climate and thus understanding the physics of these systems is critical for improving climate projections. The characterization of the stable water ...
    • Quantitative assessment of two oil-in-ice surface drift algorithms 

      Martins de Aguiar, Victor Cesar; Dagestad, Knut-Frode; Hole, Lars Robert; Barthel, Knut Sven (Journal article; Peer reviewed, 2022)
      The ongoing reduction in extent and thickness of sea ice in the Arctic might result in an increase of oil spill risk due to the expansion of shipping activity and oil exploration shift towards higher latitudes. This work ...
    • A quantitative description of the West Spitsbergen Current by combining hydrography, altimetry and in-situ current meters 

      Muus Falck, Håvard (Master thesis, 2014-06-02)
      In a warming Arctic Ocean (AO) it is important to study its main source of oceanic heat and salt. Here, seasonal climatological sections of the West Spitsbergen Current (WSC) across 78.83°N have been constructed using ...
    • Quasi-static response of a bottom-fixed wind turbine subject to various incident wind fields 

      Nybø, Astrid; Nielsen, Finn Gunnar; Godvik, Marte (Journal article; Peer reviewed, 2021)
      In the design of offshore wind farms the simulated dynamic response of the wind turbine structure includes loading from turbulent wind. The International Electrotechnical Commission (IEC) standard for wind turbine design ...
    • The quiet crossing of ocean tipping points 

      Heinze, Christoph; Blenckner, Thorsten; Martins, Helena; Rusiecka, Dagmara; Döscher, Ralf; Gehlen, Marion; Gruber, Nicolas; Holland, Elisabeth; Hov, Øystein; Joos, Fortunat; Matthews, John Brian Robin; Rødven, Rolf; Wilson, Simon (Journal article; Peer reviewed, 2021)
      Anthropogenic climate change profoundly alters the ocean’s environmental conditions, which, in turn, impact marine ecosystems. Some of these changes are happening fast and may be difficult to reverse. The identification ...
    • Rapid changes in the Subpolar Gyre based on an Ocean General Circulation Model 

      Blesvik, Torgeir Hauge (Master thesis, 2013-06-03)
      Data from the ocean component of the Norwegian Earth System Model has been analyzed for the period 1960-2008. Most attention is given to the Subpolar Gyre, which strength and spatial extensiveness is understood to have ...
    • Rapid water temperature variations at the northern shelf of the Yellow Sea 

      Asplin, Lars; Lin, Fan; Budgell, Paul; Strand, Øivind (Journal article; Peer reviewed, 2021-05-06)
      During summer, there is great spatial variability in bottom water temperature on the northern shelf of the Yellow Sea. This variability is associated with a thermal front along the shelf. Oscillatory currents from semidiurnal ...
    • Recent and future changes of the Arctic sea-ice cover 

      Smedsrud, Lars Henrik; Sorteberg, Asgeir; Kloster, Kjell (Peer reviewed; Journal article, 2008)
      The present and future state of the Arctic sea ice cover is explored using new observations and a coupled one dimensional air–sea–ice model. Updated satellite observations of Fram Strait ice-area export show an increase ...
    • Recent drought and precipitation tendencies in Ethiopia 

      Viste, Ellen Marie; Korecha, Diriba; Sorteberg, Asgeir (Peer reviewed; Journal article, 2013-05)
      In 2011, drought in the Horn of Africa again made news headlines. This study aims to quantify the meteorological component of this and other drought episodes in Ethiopia since 1971. A monthly precipitation data set for 14 ...
    • Recent Hadley circulation strengthening: a trend or multidecadal variability? 

      Zaplotnik, Žiga; Pikovnik, Matic; Boljka, Lina (Journal article; Peer reviewed, 2022)
      This study explores the possible drivers of the recent Hadley circulation strengthening in the modern reanalyses. Predominantly, two recent generations of reanalyses provided by the European Centre for Medium-Range Weather ...
    • Recent Intensified Influence of the Winter North Pacific Sea Surface Temperature on the Mei-Yu Withdrawal Date 

      Li, Hua; He, Shengping; Fan, Ke; Liu, Yong; Yuan, Xing (Journal article; Peer reviewed, 2021)
      The mei-yu withdrawal date (MWD) is a crucial indicator of flood/drought conditions over East Asia. It is characterized by a strong interannual variability, but its underlying mechanism remains unknown. We investigated the ...
    • Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region 

      Ivasic, Sara; Herceg-Bulic, Ivana; King, Martin Peter (Journal article; Peer reviewed, 2021)
      New observational evidence for variability of the atmospheric response to wintertime El Niño-Southern Oscillation (ENSO) is found. Using different approaches and datasets, a weakening in the recent ENSO teleconnection over ...
    • Recent wind driven high sea ice area export in the Fram Strait contributes to Arctic sea ice decline 

      Smedsrud, Lars Henrik; Sirevaag, Anders; Kloster, Kjell; Sorteberg, Asgeir; Sandven, Stein (Peer reviewed; Journal article, 2011-10-14)
      Arctic sea ice area has been decreasing for the past two decades. Apart from melting, the southward drift through Fram Strait is the main ice loss mechanism. We present high resolution sea ice drift data across 79° N from ...
    • Recommendation on use of wind lidars 

      Reuder, Joachim; Cheynet, Etienne; Clifton, Andrew; van Dooren, Marijn Floris; Gottschall, Julia; Jakobsen, Jasna Bogunovic; Mann, Jakob; Palma, Jose; Schlipf, David; Sjøholm, Mikael; Trujillo, Juan-Jose; Thobois, Ludovic; Würth, Ines; Zasso, Alberto (Research report, 2021)
    • Reconciling Observation and Model Trends in North Atlantic Surface CO2 

      Lebehot, Alice; Halloran, Paul R.; Watson, Andrew J.; McNeall, Doug; Ford, David A; Landschützer, Peter; Lauvset, Siv Kari; Schuster, Ute (Peer reviewed; Journal article, 2019)
      The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin‐wide uptake from the irregularly ...
    • Reconstructing the time history of the air-sea CO2 disequilibrium and its rate of change in the eastern subpolar North Atlantic, 1972–1989 

      Omar, Abdirahman M.; Olsen, Are (Peer reviewed; Journal article, 2006-02-18)
      This study determines the temporal changes of wintertime surface ocean partial pressure of CO2 (pCO2 SW) in the eastern subpolar North Atlantic (esNA) (50–64ºN; 32–10ºW) by using data of carbon-system parameters and ...
    • Reconstructing winter climate anomalies in the Euro-Atlantic sector using circulation patterns 

      Madonna, Erica; Battisti, David; Li, Camille; White, Rachel H. (Journal article; Peer reviewed, 2021)
      The efficacy of Euro-Atlantic circulation regimes for estimating wintertime climate anomalies (precipitation and surface temperature) over Europe is assessed. A comparison of seasonal climate reconstructions from two ...