Articles | Volume 20, issue 5
https://doi.org/10.5194/tc-20-2825-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-2825-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Snow depth distributions on sea ice of different ages and thicknesses from regional field campaigns
Lanqing Huang
CORRESPONDING AUTHOR
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
School of Earth, Atmosphere and Environment, Monash University, Australia
Julienne Stroeve
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
Centre for Earth Observation Science (CEOS), University of Manitoba, Winnipeg, Canada
Alfred Wegener Institute, University of Bremen, Bremerhaven, Germany
National Snow and Ice Data Center (NSIDC), Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado, USA
Thomas Newman
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
Robbie Mallett
Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
Rosemary Willatt
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, the Netherlands
Malin Johansson
Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
Carmen Nab
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
British Antarctic Survey, Cambridge, UK
Alicia Fallows
Centre for Polar Observation and Modelling, Department of Earth Sciences, University College London, London, UK
Related authors
Lanqing Huang and Irena Hajnsek
The Cryosphere, 18, 3117–3140, https://doi.org/10.5194/tc-18-3117-2024, https://doi.org/10.5194/tc-18-3117-2024, 2024
Short summary
Short summary
Interferometric synthetic aperture radar can measure the total freeboard of sea ice but can be biased when radar signals penetrate snow and ice. We develop a new method to retrieve the total freeboard and analyze the regional variation of total freeboard and roughness in the Weddell and Ross seas. We also investigate the statistical behavior of the total freeboard for diverse ice types. The findings enhance the understanding of Antarctic sea ice topography and its dynamics in a changing climate.
Lanqing Huang, Georg Fischer, and Irena Hajnsek
The Cryosphere, 15, 5323–5344, https://doi.org/10.5194/tc-15-5323-2021, https://doi.org/10.5194/tc-15-5323-2021, 2021
Short summary
Short summary
This study shows an elevation difference between the radar interferometric measurements and the optical measurements from a coordinated campaign over the snow-covered deformed sea ice in the western Weddell Sea, Antarctica. The objective is to correct the penetration bias of microwaves and to generate a precise sea ice topographic map, including the snow depth on top. Excellent performance for sea ice topographic retrieval is achieved with the proposed model and the developed retrieval scheme.
Vincent Papin, Zuzanna M. Swirad, A. Malin Johansson, and Eirik Malnes
EGUsphere, https://doi.org/10.5194/egusphere-2026-1656, https://doi.org/10.5194/egusphere-2026-1656, 2026
This preprint is open for discussion and under review for The Cryosphere (TC).
Short summary
Short summary
We used satellite images at 50 m resolution to create near-daily maps of ice and open water for Hornsund fjord, Svalbard over 23 seasons from 2002–2025. We observed a gradual shortening of the sea ice season as well as a decrease in the average ice coverage over the years. Air temperature in autumn and winter controlled ice conditions in the fjord.
Catherine Taelman, Jack Landy, Robbie Mallett, and Polona Itkin
EGUsphere, https://doi.org/10.5194/egusphere-2026-1662, https://doi.org/10.5194/egusphere-2026-1662, 2026
This preprint is open for discussion and under review for The Cryosphere (TC).
Short summary
Short summary
Arctic sea ice thickness is commonly estimated using radar measurements from satellites. This technique assumes that the snow on sea ice is 'invisible' to the radar signals. We studied if this assumption is valid and found that the radar measurements work well in cold conditions, when air temperatures are below –10 °C. However, the radar measurements can overestimate ice thickness during warmer periods, especially if there is new snowfall and if the snow contains salt.
Rasmus Tage Tonboe, Vishnu Nandan, Marcus Huntemann, Julienne Stroeve, Randall Scharien, John Yackel, Lars Kaleschke, Hoyeon Shi, and Tânia Casal
EGUsphere, https://doi.org/10.5194/egusphere-2026-1440, https://doi.org/10.5194/egusphere-2026-1440, 2026
Short summary
Short summary
Scattering and absorption from air bubbles, voids, and brine pockets significantly affect radar and microwave radiometer measurements of sea ice and light propagation through sea ice. Here, we used a high-resolution dataset, collected during the 2019–20 MOSAiC expedition, of thin ice slices of various Arctic sea ice types to estimate the autocorrelation length and density of the inclusions. The data can be used to initialize sea ice scattering models and for understanding satellite data.
Julienne Stroeve, Rosemary Willatt, Madeleine Downie, Monojit Saha, Carmen Nab, Alicia Fallows, Clement Soriot, Robbie Mallett, Anton Komarov, Vishnu Nandan, Thomas Newman, and John Yackel
EGUsphere, https://doi.org/10.5194/egusphere-2026-212, https://doi.org/10.5194/egusphere-2026-212, 2026
Short summary
Short summary
We evaluate polarimetry for snow depth retrieval on Arctic winter transport routes. Over landfast ice and tundra, traditional dual-frequency (Ku/Ka) methods often fail. We demonstrate that cross-polarization (VH) provides a more reliable marker for snow/ice and snow/ground interfaces. For lakes, we successfully resolve air, snow, and ice interfaces to retrieve snow and ice thickness simultaneously. These results establish a baseline for future polarimetric satellite missions.
Lu Zhou, Holly Ayres, Birte Gülk, Aditya Narayanan, Casimir de Lavergne, Malin Ödalen, Alessandro Silvano, Xingchi Wang, Margaret Lindeman, and Nadine Steiger
The Cryosphere, 20, 285–308, https://doi.org/10.5194/tc-20-285-2026, https://doi.org/10.5194/tc-20-285-2026, 2026
Short summary
Short summary
Polynyas are large openings in polar sea ice that can influence global climate and ocean circulation. After disappearing for 40 years, major polynyas reappeared in the Weddell Sea in 2016 and 2017, sparking new scientific questions. Our review explores how ocean currents, atmospheric conditions, and deep ocean heat drive their formation. These polynyas impact ecosystems, carbon exchange, and deep water formation, but their future remains uncertain, requiring better observations and models.
Jack C. Landy, Claude de Rijke-Thomas, Carmen Nab, Isobel Lawrence, Isolde A. Glissenaar, Robbie D. C. Mallett, Renée M. Fredensborg Hansen, Alek Petty, Michel Tsamados, Amy R. Macfarlane, and Anne Braakmann-Folgmann
The Cryosphere, 20, 183–208, https://doi.org/10.5194/tc-20-183-2026, https://doi.org/10.5194/tc-20-183-2026, 2026
Short summary
Short summary
In this study, we use three satellites to test the planned remote sensing approach of the upcoming mission Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) over sea ice and that its dual radars will accurately measure the heights of the top and base of snow sitting atop floating sea ice floes. Our results suggest that CRISTAL's dual radars will not necessarily measure the snow top and base under all conditions. We find that accurate height measurements depend more on surface roughness than on snow properties, as is commonly assumed.
Zuzanna M. Swirad, A. Malin Johansson, and Eirik Malnes
The Cryosphere, 20, 113–134, https://doi.org/10.5194/tc-20-113-2026, https://doi.org/10.5194/tc-20-113-2026, 2026
Short summary
Short summary
Drift, landfast and glacier ice are present in fjords and it is important to map them separately. We developed a method to split fjord ice into different types based on ice location, persistence in time and size. We used this method for Hornsund fjord, home to the Polish Polar Station, for an 11.5-year period. We observed that most of the ice is drift ice. The maps produced by this study can be used to look at water circulation, coastal erosion and habitat conditions.
Ziying Yang, Jiping Liu, Mirong Song, Yongyun Hu, Qinghua Yang, Ke Fan, Rune Grand Graversen, and Lu Zhou
The Cryosphere, 19, 6381–6402, https://doi.org/10.5194/tc-19-6381-2025, https://doi.org/10.5194/tc-19-6381-2025, 2025
Short summary
Short summary
Antarctic sea ice has changed rapidly in recent years. Here we developed a deep learning model trained by multiple climate variables for extended seasonal Antarctic sea ice prediction. Our model shows high predictive skills up to 6 months in advance, particularly in predicting extreme events. It also shows skillful predictions at the sea ice edge and year-to-year sea ice changes. Variable importance analyses suggest what variables are more important for prediction at different lead times.
Nicole A. Loeb, Alex Crawford, Brice Noël, and Julienne Stroeve
The Cryosphere, 19, 5403–5422, https://doi.org/10.5194/tc-19-5403-2025, https://doi.org/10.5194/tc-19-5403-2025, 2025
Short summary
Short summary
We examine how extreme precipitation days affect the seasonal mass balance (SMB) of land ice in Greenland and the Eastern Canadian Arctic in historical and future simulations. Past extreme precipitation led to higher SMB with snowfall. Future extreme precipitation may lead to the loss of ice mass as more falls as rain rather than snow in some regions, such as southwestern Greenland. Across the region, extreme precipitation becomes more important to seasonal SMB in the future, warmer climate.
Siqi Liu, Shiming Xu, Wenkai Guo, Yanfei Fan, Lu Zhou, Jack Landy, Malin Johansson, Weixin Zhu, and Alek Petty
The Cryosphere, 19, 5175–5199, https://doi.org/10.5194/tc-19-5175-2025, https://doi.org/10.5194/tc-19-5175-2025, 2025
Short summary
Short summary
In this study, we explore the potential of using synthetic aperture radars (SAR) to predict the sea ice height measurements by the airborne campaign of Operation IceBridge. In particular, we predict the meter-scale sea ice height with the statistical relationship between the two, overcoming the resolution limitation of SAR images from Sentinel-1 satellites. The prediction and ice drift correction algorithms can be applied to the extrapolation of ICESat-2 measurements in the Arctic region.
Vaishali Chaudhary, Julienne Stroeve, Vishnu Nandan, and Dustin Isleifson
EGUsphere, https://doi.org/10.5194/egusphere-2025-2851, https://doi.org/10.5194/egusphere-2025-2851, 2025
Preprint archived
Short summary
Short summary
This study examines how changing weather is affecting sea ice near the Arctic community of Tuktoyaktuk in Canada. Using satellite images and weather records, we found that stronger winds from certain directions are causing the sea ice to break more often in winter. These changes pose risks for local people who depend on stable ice for travel and hunting. Our findings help understand how climate change is making Arctic ice less reliable and more dangerous.
Franck Eitel Kemgang Ghomsi, Muharrem Hilmi Erkoç, Roshin P. Raj, Atinç Pirti, Antonio Bonaduce, Babatunde J. Abiodun, and Julienne Stroeve
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-M-6-2025, 393–397, https://doi.org/10.5194/isprs-archives-XLVIII-M-6-2025-393-2025, https://doi.org/10.5194/isprs-archives-XLVIII-M-6-2025-393-2025, 2025
Elie René-Bazin, Michel Tsamados, Sabrina Sofea Binti Aliff Raziuddin, Joel Perez Ferrer, Tudor Suciu, Carmen Nab, Chamkaur Ghag, Harry Heorton, Rosemary Willatt, Jack Landy, Matthew Fox, and Thomas Bodin
EGUsphere, https://doi.org/10.5194/egusphere-2025-1163, https://doi.org/10.5194/egusphere-2025-1163, 2025
Short summary
Short summary
This paper introduces a new statistical approach to retrieve ice and snow depth over the Arctic Ocean, using satellite altimeters measurements. We demonstrate the ability of this method to compute efficiently the sea ice thickness and the snow depth over the Arctic, without major assumptions on the snow. In addition to the ice and snow depth, this approach is efficient to study the penetration of radar and laser pulses, paving the way for further research in satellite altimetry.
Monojit Saha, Julienne Stroeve, Dustin Isleifson, John Yackel, Vishnu Nandan, Jack Christopher Landy, and Hoi Ming Lam
The Cryosphere, 19, 325–346, https://doi.org/10.5194/tc-19-325-2025, https://doi.org/10.5194/tc-19-325-2025, 2025
Short summary
Short summary
Snow on sea ice is vital for near-shore sea ice geophysical and biological processes. Past studies have measured snow depths using the satellite altimeters Cryosat-2 and ICESat-2 (Cryo2Ice), but estimating sea surface height from leadless landfast sea ice remains challenging. Snow depths from Cryo2Ice are compared to in situ data after adjusting for tides. Realistic snow depths are retrieved, but differences in roughness, satellite footprints, and snow geophysical properties are identified.
Caroline R. Holmes, Thomas J. Bracegirdle, Paul R. Holland, Julienne Stroeve, and Jeremy Wilkinson
The Cryosphere, 18, 5641–5652, https://doi.org/10.5194/tc-18-5641-2024, https://doi.org/10.5194/tc-18-5641-2024, 2024
Short summary
Short summary
Until recently, satellite data showed an increase in Antarctic sea ice area since 1979, but climate models simulated a decrease over this period. This mismatch was one reason for low confidence in model projections of 21st-century sea ice loss. We show that following low Antarctic sea ice in 2022 and 2023, we can no longer conclude that modelled and observed trends differ. However, differences in the manner of the decline mean that model sea ice projections should still be viewed with caution.
Lu Zhou, Julienne Stroeve, Vishnu Nandan, Rosemary Willatt, Shiming Xu, Weixin Zhu, Sahra Kacimi, Stefanie Arndt, and Zifan Yang
The Cryosphere, 18, 4399–4434, https://doi.org/10.5194/tc-18-4399-2024, https://doi.org/10.5194/tc-18-4399-2024, 2024
Short summary
Short summary
Snow over Antarctic sea ice, influenced by highly variable meteorological conditions and heavy snowfall, has a complex stratigraphy and profound impact on the microwave signature. We employ advanced radiation transfer models to analyse the effects of complex snow properties on brightness temperatures over the sea ice in the Southern Ocean. Great potential lies in the understanding of snow processes and the application to satellite retrievals.
Lanqing Huang and Irena Hajnsek
The Cryosphere, 18, 3117–3140, https://doi.org/10.5194/tc-18-3117-2024, https://doi.org/10.5194/tc-18-3117-2024, 2024
Short summary
Short summary
Interferometric synthetic aperture radar can measure the total freeboard of sea ice but can be biased when radar signals penetrate snow and ice. We develop a new method to retrieve the total freeboard and analyze the regional variation of total freeboard and roughness in the Weddell and Ross seas. We also investigate the statistical behavior of the total freeboard for diverse ice types. The findings enhance the understanding of Antarctic sea ice topography and its dynamics in a changing climate.
Weixin Zhu, Siqi Liu, Shiming Xu, and Lu Zhou
Earth Syst. Sci. Data, 16, 2917–2940, https://doi.org/10.5194/essd-16-2917-2024, https://doi.org/10.5194/essd-16-2917-2024, 2024
Short summary
Short summary
In the polar ocean, wind waves generate and propagate into the sea ice cover, forming marginal ice zones (MIZs). Using ESA's CryoSat-2, we construct a 12-year dataset of the MIZ in the Atlantic Arctic, a key region for climate change and human activities. The dataset is validated with high-resolution observations by ICESat2 and Sentinel-1. MIZs over 300 km wide are found under storms in the Barents Sea. The new dataset serves as the basis for research areas, including wave–ice interactions.
Wiebke Margitta Kolbe, Rasmus T. Tonboe, and Julienne Stroeve
Earth Syst. Sci. Data, 16, 1247–1264, https://doi.org/10.5194/essd-16-1247-2024, https://doi.org/10.5194/essd-16-1247-2024, 2024
Short summary
Short summary
Current satellite-based sea-ice climate data records (CDRs) usually begin in October 1978 with the first multichannel microwave radiometer data. Here, we present a sea ice dataset based on the single-channel Electrical Scanning Microwave Radiometer (ESMR) that operated from 1972-1977 onboard NASA’s Nimbus 5 satellite. The data were processed using modern methods and include uncertainty estimations in order to provide an important, easy-to-use reference period of good quality for current CDRs.
Zuzanna M. Swirad, A. Malin Johansson, and Eirik Malnes
The Cryosphere, 18, 895–910, https://doi.org/10.5194/tc-18-895-2024, https://doi.org/10.5194/tc-18-895-2024, 2024
Short summary
Short summary
We used satellite images to create sea ice maps of Hornsund fjord, Svalbard, for nine seasons and calculated the percentage of the fjord that was covered by ice. On average, sea ice was present in Hornsund for 158 d per year, but it varied from year to year. April was the "iciest'" month and 2019/2020, 2021/22 and 2014/15 were the "iciest'" seasons. Our data can be used to understand sea ice conditions compared with other fjords of Svalbard and in studies of wave modelling and coastal erosion.
Alistair Duffey, Robbie Mallett, Peter J. Irvine, Michel Tsamados, and Julienne Stroeve
Earth Syst. Dynam., 14, 1165–1169, https://doi.org/10.5194/esd-14-1165-2023, https://doi.org/10.5194/esd-14-1165-2023, 2023
Short summary
Short summary
The Arctic is warming several times faster than the rest of the planet. Here, we use climate model projections to quantify for the first time how this faster warming in the Arctic impacts the timing of crossing the 1.5 °C and 2 °C thresholds defined in the Paris Agreement. We show that under plausible emissions scenarios that fail to meet the Paris 1.5 °C target, a hypothetical world without faster warming in the Arctic would breach that 1.5 °C target around 5 years later.
Vishnu Nandan, Rosemary Willatt, Robbie Mallett, Julienne Stroeve, Torsten Geldsetzer, Randall Scharien, Rasmus Tonboe, John Yackel, Jack Landy, David Clemens-Sewall, Arttu Jutila, David N. Wagner, Daniela Krampe, Marcus Huntemann, Mallik Mahmud, David Jensen, Thomas Newman, Stefan Hendricks, Gunnar Spreen, Amy Macfarlane, Martin Schneebeli, James Mead, Robert Ricker, Michael Gallagher, Claude Duguay, Ian Raphael, Chris Polashenski, Michel Tsamados, Ilkka Matero, and Mario Hoppmann
The Cryosphere, 17, 2211–2229, https://doi.org/10.5194/tc-17-2211-2023, https://doi.org/10.5194/tc-17-2211-2023, 2023
Short summary
Short summary
We show that wind redistributes snow on Arctic sea ice, and Ka- and Ku-band radar measurements detect both newly deposited snow and buried snow layers that can affect the accuracy of snow depth estimates on sea ice. Radar, laser, meteorological, and snow data were collected during the MOSAiC expedition. With frequent occurrence of storms in the Arctic, our results show that
wind-redistributed snow needs to be accounted for to improve snow depth estimates on sea ice from satellite radars.
Wenkai Guo, Polona Itkin, Suman Singha, Anthony P. Doulgeris, Malin Johansson, and Gunnar Spreen
The Cryosphere, 17, 1279–1297, https://doi.org/10.5194/tc-17-1279-2023, https://doi.org/10.5194/tc-17-1279-2023, 2023
Short summary
Short summary
Sea ice maps are produced to cover the MOSAiC Arctic expedition (2019–2020) and divide sea ice into scientifically meaningful classes. We use a high-resolution X-band synthetic aperture radar dataset and show how image brightness and texture systematically vary across the images. We use an algorithm that reliably corrects this effect and achieve good results, as evaluated by comparisons to ground observations and other studies. The sea ice maps are useful as a basis for future MOSAiC studies.
Younjoo J. Lee, Wieslaw Maslowski, John J. Cassano, Jaclyn Clement Kinney, Anthony P. Craig, Samy Kamal, Robert Osinski, Mark W. Seefeldt, Julienne Stroeve, and Hailong Wang
The Cryosphere, 17, 233–253, https://doi.org/10.5194/tc-17-233-2023, https://doi.org/10.5194/tc-17-233-2023, 2023
Short summary
Short summary
During 1979–2020, four winter polynyas occurred in December 1986 and February 2011, 2017, and 2018 north of Greenland. Instead of ice melting due to the anomalous warm air intrusion, the extreme wind forcing resulted in greater ice transport offshore. Based on the two ensemble runs, representing a 1980s thicker ice vs. a 2010s thinner ice, a dominant cause of these winter polynyas stems from internal variability of atmospheric forcing rather than from the forced response to a warming climate.
Julienne Stroeve, Vishnu Nandan, Rosemary Willatt, Ruzica Dadic, Philip Rostosky, Michael Gallagher, Robbie Mallett, Andrew Barrett, Stefan Hendricks, Rasmus Tonboe, Michelle McCrystall, Mark Serreze, Linda Thielke, Gunnar Spreen, Thomas Newman, John Yackel, Robert Ricker, Michel Tsamados, Amy Macfarlane, Henna-Reetta Hannula, and Martin Schneebeli
The Cryosphere, 16, 4223–4250, https://doi.org/10.5194/tc-16-4223-2022, https://doi.org/10.5194/tc-16-4223-2022, 2022
Short summary
Short summary
Impacts of rain on snow (ROS) on satellite-retrieved sea ice variables remain to be fully understood. This study evaluates the impacts of ROS over sea ice on active and passive microwave data collected during the 2019–20 MOSAiC expedition. Rainfall and subsequent refreezing of the snowpack significantly altered emitted and backscattered radar energy, laying important groundwork for understanding their impacts on operational satellite retrievals of various sea ice geophysical variables.
David N. Wagner, Matthew D. Shupe, Christopher Cox, Ola G. Persson, Taneil Uttal, Markus M. Frey, Amélie Kirchgaessner, Martin Schneebeli, Matthias Jaggi, Amy R. Macfarlane, Polona Itkin, Stefanie Arndt, Stefan Hendricks, Daniela Krampe, Marcel Nicolaus, Robert Ricker, Julia Regnery, Nikolai Kolabutin, Egor Shimanshuck, Marc Oggier, Ian Raphael, Julienne Stroeve, and Michael Lehning
The Cryosphere, 16, 2373–2402, https://doi.org/10.5194/tc-16-2373-2022, https://doi.org/10.5194/tc-16-2373-2022, 2022
Short summary
Short summary
Based on measurements of the snow cover over sea ice and atmospheric measurements, we estimate snowfall and snow accumulation for the MOSAiC ice floe, between November 2019 and May 2020. For this period, we estimate 98–114 mm of precipitation. We suggest that about 34 mm of snow water equivalent accumulated until the end of April 2020 and that at least about 50 % of the precipitated snow was eroded or sublimated. Further, we suggest explanations for potential snowfall overestimation.
William Gregory, Julienne Stroeve, and Michel Tsamados
The Cryosphere, 16, 1653–1673, https://doi.org/10.5194/tc-16-1653-2022, https://doi.org/10.5194/tc-16-1653-2022, 2022
Short summary
Short summary
This research was conducted to better understand how coupled climate models simulate one of the large-scale interactions between the atmosphere and Arctic sea ice that we see in observational data, the accurate representation of which is important for producing reliable forecasts of Arctic sea ice on seasonal to inter-annual timescales. With network theory, this work shows that models do not reflect this interaction well on average, which is likely due to regional biases in sea ice thickness.
Wenkai Guo, Polona Itkin, Johannes Lohse, Malin Johansson, and Anthony Paul Doulgeris
The Cryosphere, 16, 237–257, https://doi.org/10.5194/tc-16-237-2022, https://doi.org/10.5194/tc-16-237-2022, 2022
Short summary
Short summary
This study uses radar satellite data categorized into different sea ice types to detect ice deformation, which is significant for climate science and ship navigation. For this, we examine radar signal differences of sea ice between two similar satellite sensors and show an optimal way to apply categorization methods across sensors, so more data can be used for this purpose. This study provides a basis for future reliable and constant detection of ice deformation remotely through satellite data.
Lanqing Huang, Georg Fischer, and Irena Hajnsek
The Cryosphere, 15, 5323–5344, https://doi.org/10.5194/tc-15-5323-2021, https://doi.org/10.5194/tc-15-5323-2021, 2021
Short summary
Short summary
This study shows an elevation difference between the radar interferometric measurements and the optical measurements from a coordinated campaign over the snow-covered deformed sea ice in the western Weddell Sea, Antarctica. The objective is to correct the penetration bias of microwaves and to generate a precise sea ice topographic map, including the snow depth on top. Excellent performance for sea ice topographic retrieval is achieved with the proposed model and the developed retrieval scheme.
Isolde A. Glissenaar, Jack C. Landy, Alek A. Petty, Nathan T. Kurtz, and Julienne C. Stroeve
The Cryosphere, 15, 4909–4927, https://doi.org/10.5194/tc-15-4909-2021, https://doi.org/10.5194/tc-15-4909-2021, 2021
Short summary
Short summary
Scientists can estimate sea ice thickness using satellites that measure surface height. To determine the sea ice thickness, we also need to know the snow depth and density. This paper shows that the chosen snow depth product has a considerable impact on the findings of sea ice thickness state and trends in Baffin Bay, showing mean thinning with some snow depth products and mean thickening with others. This shows that it is important to better understand and monitor snow depth on sea ice.
Céline Heuzé, Lu Zhou, Martin Mohrmann, and Adriano Lemos
The Cryosphere, 15, 3401–3421, https://doi.org/10.5194/tc-15-3401-2021, https://doi.org/10.5194/tc-15-3401-2021, 2021
Short summary
Short summary
For navigation or science planning, knowing when sea ice will open in advance is a prerequisite. Yet, to date, routine spaceborne microwave observations of sea ice are unable to do so. We present the first method based on spaceborne infrared that can forecast an opening several days ahead. We develop it specifically for the Weddell Polynya, a large hole in the Antarctic winter ice cover that unexpectedly re-opened for the first time in 40 years in 2016, and determine why the polynya opened.
Marcel Kleinherenbrink, Anton Korosov, Thomas Newman, Andreas Theodosiou, Alexander S. Komarov, Yuanhao Li, Gert Mulder, Pierre Rampal, Julienne Stroeve, and Paco Lopez-Dekker
The Cryosphere, 15, 3101–3118, https://doi.org/10.5194/tc-15-3101-2021, https://doi.org/10.5194/tc-15-3101-2021, 2021
Short summary
Short summary
Harmony is one of the Earth Explorer 10 candidates that has the chance of being selected for launch in 2028. The mission consists of two satellites that fly in formation with Sentinel-1D, which carries a side-looking radar system. By receiving Sentinel-1's signals reflected from the surface, Harmony is able to observe instantaneous elevation and two-dimensional velocity at the surface. As such, Harmony's data allow the retrieval of sea-ice drift and wave spectra in sea-ice-covered regions.
Robbie D. C. Mallett, Julienne C. Stroeve, Michel Tsamados, Jack C. Landy, Rosemary Willatt, Vishnu Nandan, and Glen E. Liston
The Cryosphere, 15, 2429–2450, https://doi.org/10.5194/tc-15-2429-2021, https://doi.org/10.5194/tc-15-2429-2021, 2021
Short summary
Short summary
We re-estimate pan-Arctic sea ice thickness (SIT) values by combining data from the Envisat and CryoSat-2 missions with data from a new, reanalysis-driven snow model. Because a decreasing amount of ice is being hidden below the waterline by the weight of overlying snow, we argue that SIT may be declining faster than previously calculated in some regions. Because the snow product varies from year to year, our new SIT calculations also display much more year-to-year variability.
Cited articles
Abraham, C., Steiner, N., Monahan, A., and Michel, C.: Effects of subgrid-scale snow thickness variability on radiative transfer in sea ice, J. Geophys. Res.-Oceans, 120, 5597–5614, https://doi.org/10.1002/2015JC010741, 2015. a
Arndt, S. and Paul, S.: Variability of winter snow properties on different spatial scales in the Weddell Sea, J. Geophys. Res.-Oceans, 123, 8862–8876, https://doi.org/10.1029/2018JC014447, 2018. a
Arndt, S., Meiners, K. M., Ricker, R., Krumpen, T., Katlein, C., and Nicolaus, M.: Influence of snow depth and surface flooding on light transmission through Antarctic pack ice, J. Geophys. Res.-Oceans, 122, 2108–2119, https://doi.org/10.1002/2016JC012325, 2017. a
Azzalini, A. and Capitanio, A.: Statistical Applications of the Multivariate Skew Normal Distribution, J. Roy. Stat. Soc. Ser. B, 61, 579–602, https://doi.org/10.1111/1467-9868.00194, 2002. a
Bitz, C., Holland, M., Weaver, A., and Eby, M.: Simulating the ice-thickness distribution in a coupled climate model, J. Geophys. Res.-Oceans, 106, 2441–2463, https://doi.org/10.1029/1999JC000113, 2001. a
Blackford, J. R.: Sintering and microstructure of ice: a review, J. Phys. D, 40, R355, https://doi.org/10.1088/0022-3727/40/21/R02, 2007. a
Brown, C. E.: Coefficient of variation, in: Applied multivariate statistics in geohydrology and related sciences, 155–157, Springer, https://doi.org/10.1007/978-3-642-80328-4_13, 1998. a
Castro-Morales, K., Kauker, F., Losch, M., Hendricks, S., Riemann-Campe, K., and Gerdes, R.: Sensitivity of simulated Arctic sea ice to realistic ice thickness distributions and snow parameterizations, J. Geophys. Res.-Oceans, 119, 559–571, https://doi.org/10.1002/2013JC009342, 2014. a, b
Chambellant, M., Stirling, I., Gough, W. A., and Ferguson, S. H.: Temporal variations in Hudson Bay ringed seal (Phoca hispida) life-history parameters in relation to environment, J. Mammal., 93, 267–281, https://doi.org/10.1644/10-MAMM-A-253.1, 2012. a
Clemens-Sewall, D., Smith, M. M., Holland, M. M., Polashenski, C., and Perovich, D.: Snow redistribution onto young sea ice: Observations and implications for climate models, Elem. Sci. Anth., 10, 00115, https://doi.org/10.1525/elementa.2021.00115, 2022. a, b
Clemens-Sewall, D., Polashenski, C., Perovich, D., and Webster, M. A.: The importance of sub-meter-scale snow roughness on conductive heat flux of Arctic sea ice, J. Glaciol., 70, e78, https://doi.org/10.1017/jog.2023.105, 2024. a
Colbeck, S.: Sintering and compaction of snow containing liquid water, Philos. Mag. A, 39, 13–32, https://doi.org/10.1080/01418617908239272, 1979. a, b
Comiso, J.: Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 4, https://doi.org/10.5067/X5LG68MH013O (last access: 20 April 2026), 2023. a
Donald, J., Soulis, E., Kouwen, N., and Pietroniro, A.: A land cover-based snow cover representation for distributed hydrologic models, Water Resour. Res., 31, 995–1009, https://doi.org/10.1029/94WR02973, 1995. a
Fetterer, F. and Untersteiner, N.: Observations of melt ponds on Arctic sea ice, J. Geophys. Res.-Oceans, 103, 24821–24835, https://doi.org/10.1029/98JC02034, 1998. a
Gaddum, J. H.: Lognormal distributions, Nature, 156, 463–466, https://doi.org/10.1038/156463a0, 1945. a
Glissenaar, I. A., Landy, J. C., Petty, A. A., Kurtz, N. T., and Stroeve, J. C.: Impacts of snow data and processing methods on the interpretation of long-term changes in Baffin Bay early spring sea ice thickness, The Cryosphere, 15, 4909–4927, https://doi.org/10.5194/tc-15-4909-2021, 2021. a, b
Granskog, M. A., Fer, I., Rinke, A., and Steen, H.: Atmosphere-ice-ocean-ecosystem processes in a thinner Arctic Sea ice regime: The Norwegian Young Sea ICE (N-ICE2015) Expedition, J. Geophys. Res.-Oceans, 123, 1586–1594, https://doi.org/10.1002/2017JC013328, 2018. a
Haas, C., Lobach, J., Hendricks, S., Rabenstein, L., and Pfaffling, A.: Helicopter-borne measurements of sea ice thickness, using a small and lightweight, digital EM system, J. Appl. Geophys., 67, 234–241, https://doi.org/10.1016/j.jappgeo.2008.05.005, 2009. a
Haas, C., Beckers, J., King, J., Silis, A., Stroeve, J., Wilkinson, J., Notenboom, B., Schweiger, A., and Hendricks, S.: Ice and snow thickness variability and change in the high Arctic Ocean observed by in situ measurements, Geophys. Res. Lett., 44, 10462–10469, https://doi.org/10.1002/2017GL075434, 2017. a, b, c, d, e, f
Hames, O., Jafari, M., Wagner, D. N., Raphael, I., Clemens-Sewall, D., Polashenski, C., Shupe, M. D., Schneebeli, M., and Lehning, M.: Modeling the small-scale deposition of snow onto structured Arctic sea ice during a MOSAiC storm using snowBedFoam 1.0., Geosci. Model Dev., 15, 6429–6449, https://doi.org/10.5194/gmd-15-6429-2022, 2022. a
Hamilton, L. C. and Stroeve, J.: 400 predictions: The search sea ice outlook 2008–2015, Polar Geography, 39, 274–287, https://doi.org/10.1080/1088937X.2016.1234518, 2016. a
Hendricks, S.: FloeNavi Toolbox 1.0.2, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, https://gitlab.awi.de/floenavi-crs (last access: 12 February 2026), 2022. a
Heorton, H., Stroeve, J., and Veyssiere, G.: Future under sea-ice light availability and algal bloom timing from CMIP6 model simulations, Front. Marine Sci., 12, 1642506, https://doi.org/10.3389/fmars.2025.1642506, 2025. a
Herzfeld, U., Maslanik, J., and Sturm, M.: Geostatistical Characterization of Snow-Depth Structures on Sea Ice Near Point Barrow, Alaska – A Contribution to the AMSR-Ice03 Field Validation Campaign, IEEE T. Geosci. Remote., 44, 3038–3056, https://doi.org/10.1109/TGRS.2006.883349, 2006. a
Holland, M. M., Serreze, M. C., and Stroeve, J.: The sea ice mass budget of the Arctic and its future change as simulated by coupled climate models, Clim. Dynam., 34, 185–200, https://doi.org/10.1007/s00382-008-0493-4, 2010. a
Huang, L.: LanqingHuang/SnowDepthCode-TC: SnowDepthCode-TC (v1.0), Zenodo [code], https://doi.org/10.5281/zenodo.20131539, 2026. a
Hunke, E. C.: Sea ice volume and age: Sensitivity to physical parameterizations and thickness resolution in the CICE sea ice model, Ocean Model., 82, 45–59, https://doi.org/10.1016/j.ocemod.2014.08.001, 2014. a
Hunkeler, P. A., Hendricks, S., Hoppmann, M., Paul, S., and Gerdes, R.: Towards an estimation of sub-sea-ice platelet-layer volume with multi-frequency electromagnetic induction sounding, Ann. Glaciol., 56, 137–146, https://doi.org/10.3189/2015AoG69A705, 2015. a
Hunkeler, P. A., Hendricks, S., Hoppmann, M., Farquharson, C. G., Kalscheuer, T., Grab, M., Kaufmann, M. S., Rabenstein, L., and Gerdes, R.: Improved 1D inversions for sea ice thickness and conductivity from electromagnetic induction data: Inclusion of nonlinearities caused by passive bucking, Geophysics, 81, WA45–WA58, https://doi.org/10.1190/geo2015-0130.1, 2016. a
Hutter, N., Hendricks, S., Jutila, A., Birnbaum, G., von Albedyll, L., Ricker, R., and Haas, C.: Merged grids of sea-ice or snow freeboard from helicopter-borne laser scanner during the MOSAiC expedition, version 1, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.950896, 2023. a
Iacozza, J. and Barber, D.: An examination of snow redistribution over smooth land-fast sea ice, Hydrol. Process., 24, 850–865, https://doi.org/10.1002/hyp.7526, 2010. a, b, c, d
Iacozza, J. and Ferguson, S. H.: Spatio-temporal variability of snow over sea ice in western Hudson Bay, with reference to ringed seal pup survival, Polar Biol., 37, 817–832, https://doi.org/10.1007/s00300-014-1484-z, 2014. a
Itkin, P. and Liston, G. E.: Combining observational data and numerical models to obtain a seamless high-temporal-resolution seasonal cycle of snow and ice mass balance at the MOSAiC Central Observatory, The Cryosphere, 19, 5111–5133, https://doi.org/10.5194/tc-19-5111-2025, 2025. a, b
Itkin, P., Webster, M., Hendricks, S., Oggier, M., Jaggi, M., Ricker, R., Arndt, S., Divine, D. V., von Albedyll, L., Raphael, I., Rohde, J., and Liston, G. E.: Magnaprobe snow and melt pond depth measurements from the 2019-2020 MOSAiC expedition, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.937781, 2021. a, b
Itkin, P., Hendricks, S., Webster, M., von Albedyll, L., Arndt, S.,Divine, D., Jaggi, M., Oggier, M., Raphael, I., Ricker, R., Rohde, J., Schneebeli, M., and Liston, G.: Sea ice and snow characteristics from year-long transects at the MOSAiC Central Observatory, Elem. Sci. Anth., 11, 00048, https://doi.org/10.1525/elementa.2022.00048, 2023. a, b, c, d, e, f, g, h, i
Kelly, B. P., Badajos, O. H., Kunnasranta, M., Moran, J. R., Martinez-Bakker, M., Wartzok, D., and Boveng, P.: Seasonal home ranges and fidelity to breeding sites among ringed seals, Polar Biol., 33, 1095–1109, https://doi.org/10.1007/s00300-010-0796-x, 2010. a
Kochanski, K., Anderson, R. S., and Tucker, G. E.: Statistical classification of self-organized snow surfaces, Geophys. Res. Lett., 45, 6532–6541, https://doi.org/10.1029/2018GL077616, 2018. a
Kolberg, S. and Gottschalk, L.: Interannual stability of grid cell snow depletion curves as estimated from MODIS images, Water Resour. Res., 46, W11555, https://doi.org/10.1029/2008WR007617, 2010. a
Kuchment, L. and Gelfan, A.: The determination of the snowmelt rate and the meltwater outflow from a snowpack for modelling river runoff generation, J. Hydrol., 179, 23–36, https://doi.org/10.1016/0022-1694(95)02878-1, 1996. a
Kurtz, N. T., Markus, T., Cavalieri, D. J., Sparling, L. C., Krabill, W. B., Gasiewski, A. J., and Sonntag, J. G.: Estimation of sea ice thickness distributions through the combination of snow depth and satellite laser altimetry data, J. Geophys. Res.-Oceans, 114, C10007, https://doi.org/10.1029/2009JC005292, 2009. a
Kwok, R. and Cunningham, G.: ICESat over Arctic sea ice: Estimation of snow depth and ice thickness, J. Geophys. Res.-Oceans, 113, C08010, https://doi.org/10.1029/2008JC004753, 2008. a, b
Lemke, P.: The Expedition of the Research Vessel Polarstern to the Antarctic in 2013 (ANT-XXIX/6), vol. 679 of Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, https://doi.org/10.2312/BzPM_0679_2014, 2014. a, b
Lipscomb, W. H.: Remapping the thickness distribution in sea ice models, J. Geophys. Res.-Oceans, 106, 13989–14000, https://doi.org/10.1029/2000JC000518, 2001. a
Liston, G. E., Polashenski, C., Rösel, A., Itkin, P., King, J., Merkouriadi, I., and Haapala, J.: A distributed snow-evolution model for sea-ice applications (SnowModel), J. Geophys. Res.-Oceans, 123, 3786–3810, https://doi.org/10.1002/2017JC013706, 2018. a
Liston, G. E., Itkin, P., Stroeve, J., Tschudi, M., Stewart, J. S., Pedersen, S. H., Reinking, A. K., and Elder, K.: A Lagrangian snow-evolution system for sea-ice applications (SnowModel-LG): Part I – Model description, J. Geophys. Res.-Oceans, 125, e2019JC015913, https://doi.org/10.1029/2019JC015913, 2020. a, b, c, d, e, f
Mallett, R., Nandan, V., Stroeve, J., Willatt, R., Saha, M., Yackel, J., Veysière, G., and Wilkinson, J.: Dye tracing of upward brine migration in snow, Ann. Glaciol., 65, e26, https://doi.org/10.1017/aog.2024.27, 2024. a
Mallett, R. D., Stroeve, J. C., Tsamados, M., Willatt, R., Newman, T., Nandan, V., Landy, J. C., Itkin, P., Oggier, M., Jaggi, M., and Perovich, D.: Sub-kilometre scale distribution of snow depth on Arctic sea ice from Soviet drifting stations, J. Glaciol., 68, 1014–1026, https://doi.org/10.1017/jog.2022.18, 2022. a, b, c, d, e, f, g, h
Marchand, W.-D. and Killingtveit, Å.: Statistical properties of spatial snowcover in mountainous catchments in Norway, Hydrol. Res., 35, 101–117, https://doi.org/10.2166/nh.2004.0008, 2004. a
Marchand, W.-D. and Killingtveit, Å.: Statistical probability distribution of snow depth at the model sub-grid cell spatial scale, Hydrol. Process., 19, 355–369, https://doi.org/10.1002/hyp.5543, 2005. a
Marshall, H., Conway, H., and Rasmussen, L.: Snow densification during rain, Cold Reg. Sci. Technol., 30, 35–41, https://doi.org/10.1016/S0165-232X(99)00011-7, 1999. a, b
Massom, R. A., Eicken, H., Hass, C., Jeffries, M. O., Drinkwater, M. R., Sturm, M., Worby, A. P., Wu, X., Lytle, V. I., Ushio, S., Morris, K., Reid, P. A., Warren, S. G., and Allison, I.: Snow on Antarctic sea ice, Rev. Geophys., 39, 413–445, https://doi.org/10.1029/2000RG000085, 2001. a
Massonnet, F., Barthélemy, A., Worou, K., Fichefet, T., Vancoppenolle, M., Rousset, C., and Moreno-Chamarro, E.: On the discretization of the ice thickness distribution in the NEMO3.6-LIM3 global ocean–sea ice model, Geosci. Model Dev., 12, 3745–3758, https://doi.org/10.5194/gmd-12-3745-2019, 2019. a
Matheron, G.: Traité de géostatistique appliquée, vol. 14, Editions Technip, 1962. a
Meier, W. N. and Stewart, J. S.: NSIDC Land, Ocean, Coast, Ice, and Sea Ice Region Masks, Tech. Rep. NSIDC Special Report 25, National Snow and Ice Data Center, Boulder, CO, USA, https://nsidc.org/sites/default/files/documents/technical-reference/nsidc-special-report-25.pdf (last access: 20 April 2026), 2023. a
Merkouriadi, I., Gallet, J.-C., Graham, R. M., Liston, G. E., Polashenski, C., Rösel, A., and Gerland, S.: Winter snow conditions on Arctic sea ice north of Svalbard during the Norwegian young sea ICE (N-ICE2015) expedition, J. Geophys. Res.-Atmos., 122, 10837–10854, https://doi.org/10.1002/2017JD026753, 2017. a, b, c, d, e, f
Merkouriadi, I., Jutila, A., Liston, G. E., Preußer, A., and Webster, M. A.: Investigating snow sinks on level sea ice: A case study in the western Arctic, J. Glaciol., 71, e66, https://doi.org/10.1017/jog.2025.34, 2025. a
Moon, W., Nandan, V., Scharien, R. K., Wilkinson, J., Yackel, J. J., Barrett, A., Lawrence, I., Segal, R. A., Stroeve, J., Mahmud, M., Duke, P. J., and Else, B.: Physical length scales of wind-blown snow redistribution and accumulation on relatively smooth Arctic first-year sea ice, Environ. Res. Lett., 14, 104003, https://doi.org/10.1088/1748-9326/ab3b8d, 2019. a, b, c, d, e, f, g, h
Myung, I. J.: Tutorial on maximum likelihood estimation, J. Math. Psychol., 47, 90–100, https://doi.org/10.1016/S0022-2496(02)00028-7, 2003. a
Nicolaus, M., Katlein, C., Maslanik, J., and Hendricks, S.: Changes in Arctic sea ice result in increasing light transmittance and absorption, Geophys. Res. Lett., 39, L24501, https://doi.org/10.1029/2012GL053738, 2012. a
Nicolaus, M., Perovich, D. K., Spreen, G., Granskog, M. A., von Albedyll, L., Angelopoulos, M., Anhaus, P., Arndt, S., Belter, H. J., Bessonov, V., Birnbaum, G., Brauchle, J., Calmer, R., Cardellach, E., Cheng, B., Clemens-Sewall, D., Dadic, R., Damm, E., de Boer, G., Demir, O., Dethloff, K., Divine, D. V., Fong, A. A., Fons, S., Frey, M. M., Fuchs, N., Gabarró, C., Gerland, S., Goessling, H. F., Gradinger, R., Haapala, J., Haas, C., Hamilton, J., Hannula, H.-R., Hendricks, S., Herber, A., Heuzé, C., Hoppmann, M., Høyland, K. V., Huntemann, M., Hutchings, J. K., Hwang, B., Itkin, P., Jacobi, H.-W., Jaggi, M., Jutila, A., Kaleschke, L., Katlein, C., Kolabutin, N., Krampe, D., Kristensen, S. S., Krumpen, T., Kurtz, N., Lampert, A., Lange, B. A., Lei, R., Light, B., Linhardt, F., Liston, G. E., Loose, B., Macfarlane, A. R., Mahmud, M., Matero, I. O., Maus, S., Morgenstern, A., Naderpour, R., Nandan, V., Niubom, A., Oggier, M., Oppelt, N., Pätzold, F., Perron, C., Petrovsky, T., Pirazzini, R., Polashenski, C., Rabe, B., Raphael, I. A., Regnery, J., Rex, M., Ricker, R., Riemann-Campe, K., Rinke, A., Rohde, J., Salganik, E., Scharien, R. K., Schiller, M., Schneebeli, M., Semmling, M., Shimanchuk, E., Shupe, M. D., Smith, M. M., Smolyanitsky, V., Sokolov, V., Stanton, T., Stroeve, J., Thielke, L., Timofeeva, A., Tonboe, R. T., Tavri, A., Tsamados, M., Wagner, D. N., Watkins, D., Webster, M., and Wendisch, M.: Overview of the MOSAiC expedition: Snow and sea ice, Elem. Sci. Anth., 10, 000046, https://doi.org/10.1525/elementa.2021.000046, 2022. a, b, c
Nixdorf, U., Dethloff, K., Rex, M., Shupe, M., Sommerfeld, A., Perovich, D. K., Nicolaus, M., Heuzé, C., Rabe, B., Loose, B., Damm, E., Gradinger, R., Fong, A., Maslowski, W., Rinke, A., Kwok, R., Spreen, G., Wendisch, M., Herber, A., Hirsekorn, M., Mohaupt, V., Frickenhaus, S., Immerz, A., Weiss-Tuider, K., König, B., Mengedoht, D., Regnery, J., Gerchow, P., Ransby, D., Krumpen, T., Morgenstern, A., Haas, C., Kanzow, T., Rack, F. R., Saitzev, V., Sokolov, V., Makarov, A., Schwarze, S., Wunderlich, T., Wurr, K., and Boetius, A.: MOSAiC extended acknowledgement, Zenodo [data set], https://doi.org/10.5281/zenodo.5541624, 2021. a
O'Hagan, A. and Leonard, T.: Bayes estimation subject to uncertainty about parameter constraints, Biometrika, 63, 201–203, https://doi.org/10.1093/biomet/63.1.201, 1976. a
Perovich, D. K.: The optical properties of sea ice., Tech. rep., U.S. Cold Reg. Res. and Eng. Lab. Monogr., Hannover, N. H., 1996. a
Petrich, C., Eicken, H., Polashenski, C. M., Sturm, M., Harbeck, J. P., Perovich, D. K., and Finnegan, D. C.: Snow dunes: A controlling factor of melt pond distribution on Arctic sea ice, J. Geophys. Res.-Oceans, 117, C09029, https://doi.org/10.1029/2012JC008192, 2012. a
Petty, A. A., Kurtz, N. T., Kwok, R., Markus, T., and Neumann, T. A.: Winter Arctic sea ice thickness from ICESat-2 freeboards, J. Geophys. Res.-Oceans, 125, e2019JC015764, https://doi.org/10.1029/2019JC015764, 2020. a, b, c
Rösel, A., Divine, D., King, J. A., Nicolaus, M., Spreen, G., Itkin, P., Polashenski, C. M., Liston, G. E., Ervik, Å., Espeseth, M., Gierisch, A., Haapala, J., Maaß, N., Oikkonen, A., Orsi, A., Shestov, A., Wang, C., Gerland, S., and Granskog, M. A.: N-ICE2015 total (snow and ice) thickness data from EM31, Norwegian Polar Institute [data set], https://doi.org/10.21334/NPOLAR.2016.70352512, 2016a. a, b, c
Rösel, A., Polashenski, C. M., Liston, G. E., King, J. A., Nicolaus, M., Gallet, J., Divine, D., Itkin, P., Spreen, G., Ervik, Å., Espeseth, M., Gierisch, A., Haapala, J., Maaß, N., Oikkonen, A., Orsi, A., Shestov, A., Wang, C., Gerland, S., and Granskog, M. A.: N-ICE2015 snow depth data with Magnaprobe, Norwegian Polar Institute [data set], https://doi.org/10.21334/NPOLAR.2016.3D72756D, 2016b. a, b
Rösel, A., Farrell, S. L., Nandan, V., Richter-Menge, J., Spreen, G., Divine, D. V., Steer, A., Gallet, J.-C., and Gerland, S.: Implications of surface flooding on airborne estimates of snow depth on sea ice, The Cryosphere, 15, 2819–2833, https://doi.org/10.5194/tc-15-2819-2021, 2021. a, b, c
Shalina, E. V. and Sandven, S.: Snow depth on Arctic sea ice from historical in situ data, The Cryosphere, 12, 1867–1886, https://doi.org/10.5194/tc-12-1867-2018, 2018. a
Skaugen, T.: Modelling the spatial variability of snow water equivalent at the catchment scale, Hydrol. Earth Syst. Sci., 11, 1543–1550, https://doi.org/10.5194/hess-11-1543-2007, 2007. a
Skaugen, T. and Melvold, K.: Modeling the snow depth variability with a high-resolution lidar data set and nonlinear terrain dependency, Water Resour. Res., 55, 9689–9704, https://doi.org/10.1029/2019WR025030, 2019. a
Skaugen, T. and Randen, F.: Modeling the spatial distribution of snow water equivalent, taking into account changes in snow-covered area, Ann. Glaciol., 54, 305–313, https://doi.org/10.3189/2013AoG62A162, 2013. a
Stroeve, J. C., Veyssiere, G., Nab, C., Light, B., Perovich, D., Laliberté, J., Campbell, K., Landy, J., Mallett, R., Barrett, A., Liston, G. E., Haddon, A., and Wilkinson, J.: Mapping potential timing of ice algal blooms from satellite, Geophys. Res. Lett., 51, e2023GL106486, https://doi.org/10.1029/2023GL106486, 2024. a
Stroeve, J., Willatt, R., Downie, M., Saha, M., Nab, C., Fallows, A., Soriot, C., Mallett, R., Komarov, A., Nandan, V., Newman, T., and Yackel, J.: Mapping Snow on Northern Winter Roads: A Dual-Frequency Polarimetric Radar Approach for Snow Characterization over Land, Lake and Sea ice, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-212, 2026. a, b, c
Sturm, M. and Holmgren, J.: An automatic snow depth probe for field validation campaigns, Water Resour. Res., 54, 9695–9701, https://doi.org/10.1029/2018WR023559, 2018. a
Sturm, M., Holmgren, J., and Liston, G. E.: A seasonal snow cover classification system for local to global applications, J. Climate, 8, 1261–1283, https://doi.org/10.1175/1520-0442(1995)008<1261:ASSCCS>2.0.CO;2, 1995. a
Sturm, M., Morris, K., and Massom, R.: The winter snow cover of the West Antarctic pack ice: its spatial and temporal variability, in: Antarctic sea ice: physical processes, interactions and variability, 74, 1–18, https://doi.org/10.1029/AR074p0001, 1998. a, b
Sturm, M., Maslanik, J. A., Perovich, D., Stroeve, J. C., Richter-Menge, J., Markus, T., Holmgren, J., Heinrichs, J. F., and Tape, K.: Snow depth and ice thickness measurements from the Beaufort and Chukchi Seas collected during the AMSR-Ice03 campaign, IEEE T. Geosci. Remote, 44, 3009–3020, https://doi.org/10.1109/TGRS.2006.878236, 2006. a
Techel, F., Pielmeier, C., and Schneebeli, M.: The first wetting of snow: micro-structural hardness measurements using a snow micro penetrometer, in: Proceedings ISSW, 1019–1026, 2008. a
Thom, H. C.: A note on the gamma distribution, Mon. Weather Rev., 86, 117–122, https://doi.org/10.1175/1520-0493(1958)086<0117:ANOTGD>2.0.CO;2, 1958. a
Thorndike, A. S., Rothrock, D. A., Maykut, G. A., and Colony, R.: The thickness distribution of sea ice, J. Geophys. Res., 80, 4501–4513, https://doi.org/10.1029/JC080i033p04501, 1975. a
Trujillo, E., Leonard, K., Maksym, T., and Lehning, M.: Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice, J. Geophys. Res.-Earth Surf., 121, 2172–2191, https://doi.org/10.1002/2016JF003893, 2016. a, b
Veyssière, G., Castellani, G., Wilkinson, J., Karcher, M., Hayward, A., Stroeve, J. C., Nicolaus, M., Kim, J.-H., Yang, E.-J., Valcic, L., Kauker, F., Khan, A. L., Rogers, I., and Jung, J.: Under-ice light field in the Western Arctic Ocean during late summer, Front. Earth Sci., 9, 643737, https://doi.org/10.3389/feart.2021.643737, 2022. a
Wagner, D. N., Shupe, M. D., Cox, C., Persson, O. G., Uttal, T., Frey, M. M., Kirchgaessner, A., Schneebeli, M., Jaggi, M., Macfarlane, A. R., Itkin, P., Arndt, S., Hendricks, S., Krampe, D., Nicolaus, M., Ricker, R., Regnery, J., Kolabutin, N., Shimanshuck, E., Oggier, M., Raphael, I., Stroeve, J., and Lehning, M.: Snowfall and snow accumulation during the MOSAiC winter and spring seasons, The Cryosphere, 16, 2373–2402, https://doi.org/10.5194/tc-16-2373-2022, 2022. a, b, c, d, e, f, g, h, i, j
Warren, S. G., Rigor, I. G., Untersteiner, N., Radionov, V. F., Bryazgin, N. N., Aleksandrov, Y. I., and Colony, R.: Snow depth on Arctic sea ice, J. Climate, 12, 1814–1829, https://doi.org/10.1175/1520-0442(1999)012<1814:SDOASI>2.0.CO;2, 1999. a
Webster, M. A., Holland, M., Wright, N. C., Hendricks, S., Hutter, N., Itkin, P., Light, B., Linhardt, F., Perovich, D. K., Raphael, I. A., Smith, M. M., von Albedyll, L., and Zhang, J.: Spatiotemporal evolution of melt ponds on Arctic sea ice: MOSAiC observations and model results, Elem. Sci. Anth., 10, 000072, https://doi.org/10.1525/elementa.2021.000072, 2022. a
Wever, N., White, S., Hunkeler, P. A., Maksym, T., and Leonard, K. C.: Snow and ice thickness measurements from Terrestrial Laser Scanning, Magnaprobe and GEM-2 on ice stations PS81/503, PS81/506 and PS81/517 from Weddell Sea, Antarctica, 2013, PANGAEA [dataset publication series], https://doi.org/10.1594/PANGAEA.933584, 2021b. a, b
Wilk, M. B. and Gnanadesikan, R.: Probability plotting methods for the analysis for the analysis of data, Biometrika, 55, 1–17, https://doi.org/10.1093/biomet/55.1.1, 1968. a, b
Short summary
Understanding snow depth on sea ice is key for measuring ice thickness, studying ecosystems, and modelling climate. Using snow and ice thickness measurements from Arctic and Antarctic campaigns, this study examines sub-kilometre-scale (<1 km²) snow depth variations and identifies the most suitable statistical models for different ice ages, thicknesses, and weather conditions. These results can improve sub-grid snow parameterisations in snow models and remote sensing algorithms.
Understanding snow depth on sea ice is key for measuring ice thickness, studying ecosystems, and...