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Description

This data set contains estimates of Arctic sea ice thickness and concentration, ice freeboard and surface roughness, as well as snow density and depth, derived from the ESA CryoSat-2 Synthetic Aperture Interferometric Radar Altimeter (SIRAL). The data are provided daily on a 25 km grid as 30-day averages for the months between September and May.

Version Description

Initial release

Product Summary

Platforms
CRYOSAT-2 ,
DMSP 5D-3/F17
Instruments
SIRAL ,
SSMIS
Spatial Extent

N: 90 S: 55 E: 180 W: -180

Spatial Resolution
25 Kilometers x 25 Kilometers
Spatial Reference System(s)
WGS 84 / NSIDC Sea Ice Polar Stereographic North (EPSG:3413)
Location
ARCTIC
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2010-09-20 to Present
Temporal Resolution
1 Day
Concept ID
C3205181648-NSIDC_CPRD
Data State
ACTIVE
Number of Files/Granules
3301
Processing Level
4
Published
Science Keywords
Freeboard ,
Ice Depth/Thickness ,
Ice Roughness ,
Sea Ice Concentration ,
Snow Density ,
Snow Depth

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Kurtz, N., & Harbeck, J. (2017). CryoSat-2 Level-4 Sea Ice Elevation, Freeboard, and Thickness, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/96JO0KIFDAS8 Date Accessed: 2026-04-30

Documents

Publications Citing This Dataset

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Title Year Author Topic
A snow depth model for Arctic sea ice from ICESat-2 and CryoSat-2 freeboards. Liu, Xin, Huang, Ziqian, Yin, Gaoying, Li, Hui, Gao, Jinggui, Guo, Jinyun Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth, Sea Ice Concentration, Snow Density, Snow Depth
A numerical sensitivity study on the snow-darkening effect by black carbon deposition over the Arctic in spring Zhang, Zilu, Zhou, Libo, Zhang, Meigen Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Incremental route planning based on daily risk assessment for Arctic navigation Wang, Bo, Liu, Yuanmin, Dai, Wen, Li, Jixuan Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Four-dimensional variational data assimilation with a sea-ice thickness emulator Durand, Charlotte, Finn, Tobias Sebastian, Farchi, Alban, Bocquet, Marc, Brajard, Julien, Bertino, Laurent Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Regime-dependence when constraining a sea ice model with observations: lessons from a single-column perspective Wieringa, Molly M., Bitz, Cecilia M. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
CMIP6 models overestimate sea ice melt, growth and conduction relative to ice mass balance buoy estimates West, Alex E., Blockley, Edward W. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Spire Near-nadir GNSS-R for Sea Ice Detection: First Results Li, Ming, Zhang, Jiahua, Weiss, Jan-Peter, Braun, John J., Gullotta, William, Sleziak-Sallee, Maggie Brightness Temperature, Sea Ice Concentration, Freeboard, Ice Depth/Thickness, Ice Roughness, Snow Density, Snow Depth
Estimation of the AMSR2 Data Potential to Retrieve the Arctic Sea Ice Thickness Zabolotskikh, E. V., Azarov, S. M., Stokoz, A., Yarusov, K. I. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Characteristics of late summer Arctic brash sea ice and its melting effect on the surface-water biogeochemistry of the Chukchi Shelf and Canada Basin Akino, Ryota, Nomura, Daiki, Sahashi, Reishi, Tozawa, Manami, Hatta, Mariko, Matsuno, Kohei, Endo, Wakana, Shiozaki, Takuhei, Kawakami, Tatsuya, Ito, Masato, Murata, Akihiko, Fujiwara, Amane Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Calculations of Arctic ice-ocean interface photosynthetically active radiation (PAR) transmittance values Redmond Roche, B. H., King, M. D. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
To what extent do sea-ice algae affect the modelled transmittance of photosynthetically active radiation (PAR) to the ice-ocean interface? Redmond Roche, Benjamin H., King, Martin D. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
New insight in the determination of thermodynamic equilibrium thickness using heat budget over Barents Sea Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Feasibility of retrieving Arctic sea ice thickness from the Chinese HY-2B Ku-band radar altimeter Dong, Zhaoqing, Shi, Lijian, Lin, Mingsen, Jia, Yongjun, Zeng, Tao, Wu, Suhui Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
An Ocean Acoustic Modeling Based on the Physical Parameters Clustering of the Arctic Ice Floes: Applied to the Study of Acoustic Field Response as Ice Floes ... Lu, Can, Xu, Jian, Zhang, Xuefeng, Wang, Zichen, Jin, Kangkang Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Spatio-temporal Analyses of Sea Ice Conditions over Two Seas of Arctic Ocean Panicker, Dency V., Vachharajani, Bhasha, Srivastava, Rohit Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Short- and Mid-Term Forecasting of Pan-Arctic Sea Ice Volume Using Variational Mode Decomposition and Bidirectional Long Short-Term Memory Ahajjam, Aymane, Putkonen, Jaakko, Pasch, Timothy J., Zhu, Xun Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
On the determination and rank for the environmental risk aspects for ship navigating in the Arctic based on big Earth data Liu, Yang, Ma, Xiaoxue, Qiao, Weiliang, Han, Bing Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Unprecedented Arctic sea ice thickness loss and multiyear-ice volume Li, Xuewei, Yang, Qinghua, Yu, Lejiang, Holland, Paul R, Min, Chao, Mu, Longjiang, Chen, Dake Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Evolution of sea ice thickness over various seas of the Arctic Region for the years 201213 and 201819 Panicker, Dency V., Vachharajani, Bhasha, Ram Rajak, D. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry Li, Shutong, Dou, Tingfeng, Xiao, Cunde Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth, Sea Ice Concentration, Snow Density, Snow Depth
Snow and ice thicknesses derived from Fast Ice Prediction System Version 2.0 (FIPS V2.0) in Prydz Bay, East Antarctica: comparison with in-situ observations Zhao, Jiechen, Cheng, Jingjing, Tian, Zhongxiang, Han, Xiaopeng, Shen, Hui, Hao, Guanghua, Guo, Honglin, Shu, Qi Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Assessment of High-Resolution Dynamical and Machine Learning Models for Prediction of Sea Ice Concentration in a Regional Application Fritzner, Sindre, Graversen, Rune, Christensen, Kai H. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Winter Arctic sea ice thickness from ICESat2 freeboards Petty, Alek A., Kurtz, Nathan T., Kwok, Ron, Markus, Thorsten, Neumann, Thomas A. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth, Snow Depth
A Year-Round Subseasonal-to-Seasonal Sea Ice Prediction Portal Wayand, N. E., Bitz, C. M., BlanchardWrigglesworth, E. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Spatial and Temporal Variations in the Extent and Thickness of Arctic Landfast Ice Li, Zixuan, Zhao, Jiechen, Su, Jie, Li, Chunhua, Cheng, Bin, Hui, Fengming, Yang, Qinghua, Shi, Lijuan Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Changing state of Arctic sea ice across all seasons Stroeve, Julienne, Notz, Dirk Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Comparison of Freeboard Retrieval and Ice Thickness Calculation From ALS, ASIRAS, and CryoSat-2 in the Norwegian Arctic to Field Measurements Made During the N-ICE2015 Expedition King, Jennifer, Skourup, Henriette, Hvidegaard, Sine M., Rosel, Anja, Gerland, Sebastian, Spreen, Gunnar, Polashenski, Chris, Helm, Veit, Liston, Glen E. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
Warm Arctic, Increased Winter Sea Ice Growth? Petty, Alek A., Holland, Marika M., Bailey, David A., Kurtz, Nathan T. Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Concentration, Snow Density, Snow Depth
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