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Data Publisher for Earth & Environmental Science

Sabel, Daniel; Park, Sang-Eun; Bartsch, Annett; Schlaffer, Stefan; Klein, Jean-Pierre; Wagner, Wolfgang (2012): Regional surface soil moisture and freeze/thaw timing remote sensing products with links to geotiff images. PANGAEA, https://doi.org/10.1594/PANGAEA.779658

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Related to:
Park, Sang-Eun; Bartsch, Annett; Sabel, Daniel; Wagner, Wolfgang; Naeimi, Vahid; Yamaguchi, Yoshio (2011): Monitoring freeze/thaw cycles using ENVISAT ASAR Global Mode. Remote Sensing of Environment, 115(12), 3457-3467, https://doi.org/10.1016/j.rse.2011.08.009
Sabel, Daniel; Bartalis, Zoltan; Wagner, Wolfgang; Doubkova, Marcela; Klein, Jean-Pierre (2012): Development of a Global Backscatter Model in support to the Sentinel-1 mission design. Remote Sensing of Environment, 120, 102-112, https://doi.org/10.1016/j.rse.2011.09.028
Sabel, Daniel; Bartsch, Annett; Schlaffer, Stefan; Klein, Jean-Pierre; Wagner, Wolfgang (2012): Soil moisture mapping in permafrost regions - An outlook to Sentinel-1. IGARSS 2012, IEEE International Geoscience and Remote Sensing Symposium, Remote Sensing for a Dynamic Earth, 22-27 July 2012, Munich, Germany, 1216-1219, https://doi.org/10.1109/IGARSS.2012.6351328
Project(s):
Coverage:
Median Latitude: 66.470000 * Median Longitude: 156.640000 * South-bound Latitude: 61.700000 * West-bound Longitude: 78.500000 * North-bound Latitude: 71.250000 * East-bound Longitude: -128.500000
Event(s):
DUEPermafrost_Alaska * Latitude: 69.600000 * Longitude: -148.600000 * Device: Satellite remote sensing (SAT) * Comment: position describes the center of area
DUEPermafrost_Central_Yakutia * Latitude: 61.700000 * Longitude: 130.800000 * Device: Satellite remote sensing (SAT) * Comment: position describes the center of area
DUEPermafrost_Laptev_Sea * Latitude: 71.250000 * Longitude: 131.000000 * Device: Satellite remote sensing (SAT) * Comment: position describes the center of area
Comment:
The SAR Surface Soil Moisture (SSM) product is derived from the ENVISAT ASAR sensor operating in Global Monitoring (GM) mode (Pathe et al. 2009) based on the approach of Wagner et al. (1999). The SAR SSM product is delivered as weekly mean composites at the 1 km spatial resolution. The version 2 release of the data covers the years 2005 through 2011 for the regional sites Ob Estuary, Alaska, Mackenzie and Central Yakutia. For the Laptev Sea Coast site the product is provided for 2005 through 2010. Product availability is limited to availability of ASAR GM data (Sabel et al. 2012).
The SAR Surface Soil Moisture parameter represents a relative measure of the soil moisture in the top layer of the soil, scaled between references corresponding approximately to wilting level (0%) and field capacity (100%) (Wagner et al. 1999).
In addition to the SSM maps, quality indicator maps provide information on the number of individual SSM retrievals that were averaged in order to achieve the corresponding weekly SSM composites. Furthermore, for each region, the mask applied to the SSM maps is supplied in a GeoTIFF file.
More information about the SSM part of dataset can be found in hdl:10013/epic.39180.d001.
The Synthetic Aperture Radar (SAR) Freeze/Thaw (F/T) product is as well derived from data acquired by the ENVISAT ASAR sensor operating in Global Monitoring (GM) mode (Park et al. 2010).
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. Therefore information of available number of measurements per year is supplied with the dataset.
Overview figures:
- Thawing in 2010, regional product, Canada: hdl:10013/epic.39181.d002
- Freezing in 2010, regional product, Canada: hdl:10013/epic.39181.d003
Product guides:
- ESA DUE Permafrost SAR Surface Soil Moisture v2 product guide: hdl:10013/epic.39180.d001
- ESA DUE Permafrost SAR Freeze/Thaw v2 product guide: hdl:10013/epic.39181.d001
This dataset is part of the ESA Data User Element (DUE) Permafrost Full Product Set (doi:10.1594/PANGAEA.780111).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Date/time startDate/time startWagner, Wolfgang
3Date/time endDate/time endWagner, Wolfgang
4Uniform resource locator/link to fileURL fileWagner, Wolfgang
5File contentContentWagner, Wolfgang
6File formatFile formatWagner, Wolfgang
7File sizeFile sizekByteWagner, Wolfgang
Size:
60 data points

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