Submarine Permafrost Map (SuPerMAP), modeled with CryoGrid 2, Circum-Arctic

Overduin, Pier Paul; Schneider von Deimling, Thomas; Miesner, Frederieke; Grigoriev, Mikhail N.; Ruppel, Carolyn D.; Vasiliev, Alexander; Lantuit, Hugues; Juhls, Bennet; Westermann, Sebastian; Laboor, Sebastian

This data set contains a first‐order estimate of distribution, thickness and ice-content of submarine permafrost on the Arctic shelf based on a numerical heat transfer model. Our model uses dynamic upper boundary conditions that synthesize Earth System Model air temperature, ice mass distribution and thickness, and global sea level reconstruction and applies globally distributed geothermal heat flux as a lower boundary condition. Sea level reconstruction accounts for differences between marine and terrestrial sedimentation history. Sediment composition and pore water salinity are integrated in the model. Model runs for 450 ka for cross‐shelf transects were used to initialize the model for circumarctic modeling for the past 50 ka.This data set consists of current sea levels, and permafrost depth [m below sea floor(m bsf)], total ice-content [m³ / m²] and enthalpy [MJ / m²] at times 50ka, 25ka and 0a before industrialization for 15892 locations on the Arctic shelf. Additionally zonations for permafrost depth and ice-content are given as layer files. Based on the undertaken sensitivity studies zones with 300m are confident.

Detailed information about the methods can be found in the publication to which this dataset is a supplement.

Citation

In order to use these data, you must cite this data set with the following citation:

Contact

Overduin, Pier Paul

Metadata Access

DCAT in RDF/XML-Format

DCAT in Turtle-Format

DCAT in JSON-LD-Format

APGC Dataset Metadata in JSON-Format

Data and Resources

Additional Info

Field Value
Identifier DOI:10.1594/PANGAEA.910540
Project(s) NUNATARYUK
Institute AWI Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
Source https://doi.pangaea.de/10.1594/PANGAEA.910540
Publication Date 2020-01-08
Version 1.0
Product group
Product SuPerMAP 1.0
Sensor CryoGrid 2
Files
  • SuPerMap data point text file (containing coordinates, time, permafrost depth, water depth, total ice content and enthalpy)
  • SuPerMap data point feature shapefile (containing coordinates, time, permafrost depth, water depth, total ice content and enthalpy)
  • SuPerMap Extent
  • SuPerMap Permafrost Depth polygon feature shapefiles at times 50ka, 25ka and 0a before industrialization
  • SuPerMap Total Ice Content polygon feature shapefiles at times 50ka, 25ka and 0a before industrialization
  • SuPerMap Classes ArcGIS layer file
Variables [Units]
  • Lon (longitude [decimal degrees])
  • Lat (latitude [decimal degrees])
  • Time [50ka, 25ka and 0a before industrialization]
  • H2ODepth (water depth [m])
  • PFDepth (permafrost depth in m below sea floor [m bsf])
  • TIceCont (total ice content [m³ / m²])
  • Enthalpy [MJ / m²]
Region Circum-Arctic
Spatial Reference EPSG:6931 WGS 84 / NSIDC EASE-Grid 2.0 North
Spatial Resolution 12500 m
Spatial Coverage Latitude 56.31 to 90.00, Longitude -180.00 to -180.00
Temporal Coverage
Temporal Resolution
Format Shapefile, txt
Is Supplement to Overduin, P. P., Schneider von Deimling, T., Miesner, F., Grigoriev, M. N., Ruppel, C. D., Vasiliev, A., et al. ( 2019). Submarine permafrost map in the Arctic modeled using 1‐D transient heat flux (SuPerMAP). Journal of Geophysical Research: Oceans, 124, 3490– 3507. https://doi.org/10.1029/2018JC014675

Dataset extent

Map data © OpenStreetMap contributors