Freeze/Thaw Timing from ENVISAT ASAR GM, 2005-2010, Ob Estuary and Yamal Peninsula, Western Siberia (RU)

Sabel, Daniel; Park, Sang-Eun; Bartsch, Annett; Schlaffer, Stefan; Klein, Jean-Pierre; Wagner, Wolfgang

The SAR Freeze/Thaw product indicates the timing (day of year) of ground surface freeze-up and thawing at a resolution of 1 km. It is derived from the ENVISAT ASAR sensor operating in Global Monitoring (GM) mode. The SAR F/T product represents timing (day of year) of ground surface freeze-up and thawing at a resolution of 1 km. The version 2 release of the data covers the years 2005 through 2010 for the regional sites Ob Estuary, Alaska, Mackenzie, Laptev Sea Coast and Central Yakutia. Product quality and geographical coverage is strongly dependent on the availability of ASAR GM data. The available number of measurements per year is supplied with the dataset.

More information about the image processing and the freeze/thaw retrieval can be found in the product guide.

This dataset is part of the ESA Data User Element (DUE) Permafrost Full Product Set (doi:10.1594/PANGAEA.780111).

Citation

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Contact

Annett Bartsch

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.779658
Project(s) ESA DUE Permafrost
Institute Institute of Photogrammetry and Remote Sensing, Vienna University of Technology
Source https://doi.org/10.1594/PANGAEA.77965
Publication Date 2012
Version 2.0
Product group
Product Freeze/Thaw
Sensor ENVISAT ASAR Global Monitoring
Files
  • Timing of surface thawing (extension _tha.tif)
  • Timing of surface freezing (extension _fre.tif)
  • Number of Measurements (extension _num.tif)
Variables [Units]
  • Timing of thawing [day of year, -1: missing or masked data]
  • Timing of freezing [day of year, -1: missing or masked data]
  • Number of Measurements [count, -1: missing or masked data]
Region Western Siberia
Spatial Reference EPSG:4326 WGS 84
Spatial Resolution 1000 m
Spatial Coverage Latitude 63.00 to 73.50, Longitude 66.50 to 79.50
Temporal Coverage 2005-2010
Temporal Resolution
Format Geotiff

Dataset extent

Map data © OpenStreetMap contributors