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Opportunities to Use Remote Sensing in Understanding Permafrost and Related Ecological Characteristics Report of a Workshop (2014) / Chapter Skim
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Appendix A: Abstracts of Workshop Presentations
Pages 53-62

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From page 53...
... Hinzman, International Arctic Research fied. A NASA research priority should relate surface Center, University of Alaska Fairbanks expressions of degrading permafrost to the ecological, biological, hydrological, and carbon systems over a large Permafrost extent, condition, and processes are spatial area providing extent and rate quantification of specifically identified in the Decadal Survey (NRC, degrading permafrost and gas flux.
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From page 54...
... Beginning in 2015, ASF will adjust according to the direct relaxation or enhance- begin distributing SMAP data which will be extremely ment of physiological constraints, the size of the useful for understanding permafrost distribution and unfrozen organic matter pool, and feedbacks to these dynamics. SMAP products include global freeze/thaw factors as well as changes in soil organic matter caused and soil moisture maps (updated every 3 to 10 days)
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From page 55...
... These results illustrate the optical remote sensing data to develop a parameterizavalue of AEM data for developing three-dimensional tion of thermokarst lake expansion. geological and hydrological frameworks of permafrost We also recommend expanding the use of geoenvironments, and the importance of furthering the physical remote sensing techniques to complement use of AEM to complement our permafrost remote current and planned remote sensing capabilities.
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From page 56...
... mafrost landscape features and processes and discuss Geophysical techniques have been widely applied to the what their spatial scales and temporal dynamics are, cryospheric study of glaciers, land ice sheets, and sea ice, including thermokarst pond growth, lake and coastal but are greatly underutilized in the study of permafrost. erosion, thaw slump development, peatland collapse, We offer a number of potential examples to illustrate changes in active layer thickness, broad surface subsidthe full potential of geophysical remote sensing in ence, as well as pingos, ice wedge networks, and smallunderstanding key permafrost processes.
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From page 57...
... A SMAP Level 4 AIRBORNE REMOTE SENSING carbon (L4_C) product uses the FT retrievals and CAPABILITIES TO UNDERSTAND model value-added surface and root zone soil moisture ECOLOGICAL IMPACTS TRIGGERED BY estimates with other ancillary inputs to quantify net CHANGING PERMAFROST ecosystem CO2 exchange (NEE)
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From page 58...
... D.A. Walker, Institute of Arctic Biology, University of THE CONTRIBUTION OF SPACEBORNE Alaska Fairbanks, USA SYNTHETIC APERTURE RADAR SENSORS TO PERMAFROST RESEARCH Integrated mapping approaches for the Arctic have been evolving.
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From page 59...
... has strong utility in northern high-latitude environments: short-term, for mapping and monitoring of physical land paramseasonal dynamics of the active layer located above eters relevant to soil active layer dynamics in permafrost permafrost, and long-term multiannual changes in landscapes. Satellite passive microwave sensors detect permafrost extent.
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From page 60...
... These techniques limited campaigns supporting post-launch sensor include spatial resolution enhancement techniques and product Cal/Val activities for SMAP, OCO-2 applied to overlapping Tb and radar backscatter orbital (Orbiting Carbon Observatory) , and a more extensive swath data, and empirical modeling and data fusion NASA-led Arctic Boreal Vulnerability Experiment techniques using synergistic multiscale and multisensor (ABoVE)
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From page 61...
... for airborne and ground-based spectroscopy for mapping permafrost features or link- imaging spectroscopy based around the acquisition ing permafrost distribution with biophysical variables of commercial HySpex visible and shortwave infrared identified and mapped by imaging spectroscopy is at (0.4-2.5 µm) hyperspectral systems.
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Key Terms

  • active layer
  • permafrost landscapes
  • surface soil
  • soil organic
  • alaska fairbanks

  • aperture radar
  • synthetic aperture
  • soil active
  • permafrost degradation
  • sar data

  • microwave remote
  • geophysical remote
  • optical remote
  • permafrost features
  • permafrost processes

  • alaska satellite
  • moisture active
  • satellite facility
  • aem data
  • passive microwave

  • spatial resolution
  • temporal resolution
  • organic matter
  • layer dynamics
  • layer thickness

  • biophysical variables
  • imaging spectroscopy
  • thermal regime
  • time series
  • permafrost remote


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