Browsing Geophysical Institute by Journals "The Cryosphere"

Now showing items 1-13 of 13

    • Arctic freshwater fluxes: sources, tracer budgets and inconsistencies 

      Forryan, Alexander; Bacon, Sheldon; Tsubouchi, Takamasa; Torres-Valdes, Sinhue; Garabato, Alberto C. Naveira (Peer reviewed; Journal article, 2019)
      The net rate of freshwater input to the Arctic Ocean has been calculated in the past by two methods: directly, as the sum of precipitation, evaporation and runoff, an approach hindered by sparsity of measurements, and by ...

    • The Arctic sea ice extent change connected to Pacific decadal variability 

      Yang, Xiao-Ying; Wang, Guihua; Keenlyside, Noel (Journal article; Peer reviewed, 2020)
      After an unprecedented retreat, the total Arctic sea ice cover for the post-2007 period is characterized by low extent and a remarkable increase in annual cycle amplitude. We have identified the leading role of spring ...

    • Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration 

      Chatterjee, Sourav; Raj, Roshin Pappukutty; Bertino, Laurent; Mernild, Jacob Sebastian Haugaard; Subeesh, Meethale P.; Murukesh, Nuncio; Ravichandran, Muthalagu (Journal article; Peer reviewed, 2021)
      The amount and spatial extent of Greenland Sea (GS) ice are primarily controlled by the sea ice export across the Fram Strait (FS) and by local seasonal sea ice formation, melting, and sea ice dynamics. In this study, using ...

    • Estimating a mean transport velocity in the marginal ice zone using ice-ocean prediction systems 

      Sutherland, Graig; Martins de Aguiar, Victor Cesar; Hole, Lars Robert; Rabault, Jean; Dabboor, Mohammed; Breivik, Øyvind (Journal article; Peer reviewed, 2022)
      Understanding the transport of objects and material in the marginal ice zone (MIZ) is critical for human operations in polar regions. This can be the transport of pollutants, such as spilled oil, or the transport of objects, ...

    • Forced and internal components of observed Arctic sea-ice changes 

      Dörr, Jakob Simon; Bonan, David; Årthun, Marius; Svendsen, Lea; Wills, Robert C.J. (Journal article; Peer reviewed, 2023)
      The Arctic sea-ice cover is strongly influenced by internal variability on decadal timescales, affecting both short-term trends and the timing of the first ice-free summer. Several mechanisms of variability have been ...

    • Local-scale deposition of surface snow on the Greenland ice sheet 

      Zuhr, Alexandra M.; Münch, Thomas; Steen-Larsen, Hans Christian; Hörhold, Maria; Laepple, Thomas (Journal article; Peer reviewed, 2021)
      Ice cores from polar ice sheets and glaciers are an important climate archive. Snow layers, consecutively deposited and buried, contain climatic information from the time of their formation. However, particularly ...

    • Open-source feature-tracking algorithm for sea ice drift retrieval from Sentinel-1 SAR imagery 

      Muckenhuber, Stefan; Korosov, Anton Andreevich; Sandven, Stein (Peer reviewed; Journal article, 2016-04-26)
      A computationally efficient, open-source feature-tracking algorithm, called ORB, is adopted and tuned for sea ice drift retrieval from Sentinel-1 SAR (Synthetic Aperture Radar) images. The most suitable setting and parameter ...

    • Open-source sea ice drift algorithm for Sentinel-1 SAR imagery using a combination of feature tracking and pattern matching 

      Muckenhuber, Stefan; Sandven, Stein (Peer reviewed; Journal article, 2017-08-07)
      An open-source sea ice drift algorithm for Sentinel-1 SAR imagery is introduced based on the combination of feature tracking and pattern matching. Feature tracking produces an initial drift estimate and limits the search ...

    • Operational algorithm for ice–water classification on dual-polarized RADARSAT-2 images 

      Zakhvatkina, Natalia; Korosov, Anton; Muckenhuber, Stefan; Sandven, Stein; Babiker, Mohamed (Peer reviewed; Journal article, 2017-01-11)
      Synthetic Aperture Radar (SAR) data from RADARSAT-2 (RS2) in dual-polarization mode provide additional information for discriminating sea ice and open water compared to single-polarization data. We have developed an automatic ...

    • Rapid sea ice changes in the future Barents Sea 

      Rieke, Ole; Årthun, Marius; Dörr, Jakob Simon (Journal article; Peer reviewed, 2023)
      Observed and future winter Arctic sea ice loss is strongest in the Barents Sea. However, the anthropogenic signal of the sea ice decline is superimposed by pronounced internal variability that represents a large source of ...

    • The role of sublimation as a driver of climate signals in the water isotope content of surface snow: Laboratory and field experimental results 

      Hughes, Abigail G.; Wahl, Sonja; Jones, Tyler R.; Zuhr, Alexandra; Hörhold, Maria; White, James W. C.; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2021)
      Ice core water isotope records from Greenland and Antarctica are a valuable proxy for paleoclimate reconstruction, yet the processes influencing the climate signal stored in the isotopic composition of the snow are being ...

    • Uncertainties in Arctic sea ice thickness and volume: new estimates and implications for trends 

      Zygmuntowska, Marta; Rampal, Pierre; Ivanova, Natalia; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2014-04-22)
      Sea ice volume has decreased in the last decades, evoked by changes in sea ice area and thickness. Estimates of sea ice area and thickness rely on a number of geophysical parameters which introduce large uncertainties. To ...

    • Waveform classification of airborne synthetic aperture radar altimeter over Arctic sea ice 

      Zygmuntowska, Marta; Khvorostovsky, Kirill; Helm, Veith; Sandven, Stein (Peer reviewed; Journal article, 2013-08-19)
      Sea ice thickness is one of the most sensitive variables in the Arctic climate system. In order to quantify changes in sea ice thickness, CryoSat-2 was launched in 2010 carrying a Ku-band radar altimeter (SIRAL) designed ...