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Global Change Master Directory (GCMD)
Pre-ABoVE: Remotely Sensed Active Layer Thickness, Prudhoe Bay, Alaska, 1992-2000
Entry ID: INSAR_Prudhoe_Bay_1267_1


Summary
Abstract: Active layer thickness (ALT) is a critical parameter for monitoring the status of permafrost that is typically measured at specific locations using probing, in situ temperature sensors, or other ground-based observations. The thickness of the active layer is the average annual thaw depth, in permafrost areas, due to solar heating of the surface. This data set includes the mean Remotely Sensed Active Layer Thickness (ReSALT) over years 1992 to 2000 for an area near Prudhoe Bay, Alaska. The data were produced by an Interferometric Synthetic Aperture Radar (InSAR) technique that measures seasonal surface subsidence and infers ALT. ReSALT estimates were validated by comparison with ground-based ALT measurements at multiple sites. These results indicate remote sensing techniques based on InSAR could be an effective way to measure and monitor ALT over large areas on the Arctic coastal plain.These data provide gridded (100-m) estimates of active layer thickness (cm; ALT), seasonal subsidence (cm) and subsidence trend (mm/yr), as well as calculated uncertainty in each of these parameters. This data set was developed in support of NASA's Arctic-Boreal Vulnerability Experiment (ABoVE) field campaign.The data are presented in one netCDF (*.nc) file.

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Description: The THREDDS location for this Collection.

Geographic Coverage
 N: 70.45 S: 69.95  E: -146.99  W: -149.5

Data Set Citation
Version: 1


Temporal Coverage
Start Date: 1992-01-01
Stop Date: 2000-12-31


Science Keywords
CRYOSPHERE >FROZEN GROUND >ACTIVE LAYER    [Definition]
LAND SURFACE >TOPOGRAPHY >TERRAIN ELEVATION    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION
ELEVATION


Platform
ALOS >Advanced Land Observing Satellite    [Information]


Instrument
PALSAR >Phased Array type L-band Synthetic Aperture Radar    [Information]


Project
ABoVE >Arctic-Boreal Vulnerability Experiment    [Information]


Data Set Progress
COMPLETE


Data Center
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)    [Information]
Data Center URL: https://daac.ornl.gov/

Data Center Personnel
Name: NOT PROVIDED


Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-04-15



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