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BOREAS RSS-17 Dielectric Constant Profile Measurements

Published by ORNL_DAAC | National Aeronautics and Space Administration | Catalog Last Checked: July 14, 2026 at 10:24 PM | Dataset Last Updated: June 23, 2026
The BOREAS RSS-17 team acquired and analyzed imaging radar data from the ESA's ERS-1 over a complete annual cycle at the BOREAS sites in Canada in 1994 to detect shifts in radar backscatter related to varying environmental conditions. This data set consists of dielectric constant profile measurements from selected trees at various BOREAS flux tower sites. The relative dielectric constant was measured at C-band (frequency = 5 GHz) as a function of depth into the trunk of three trees at each site. Measurements were made during April 1994 with an Applied Microwave Corporation field PDP fitted with a 0.358-cm (0.141-inch) diameter coaxial probe tip.

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Complete Metadata
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accessLevel public
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contactPoint 
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}
description The BOREAS RSS-17 team acquired and analyzed imaging radar data from the ESA's ERS-1 over a complete annual cycle at the BOREAS sites in Canada in 1994 to detect shifts in radar backscatter related to varying environmental conditions. This data set consists of dielectric constant profile measurements from selected trees at various BOREAS flux tower sites. The relative dielectric constant was measured at C-band (frequency = 5 GHz) as a function of depth into the trunk of three trees at each site. Measurements were made during April 1994 with an Applied Microwave Corporation field PDP fitted with a 0.358-cm (0.141-inch) diameter coaxial probe tip.
distribution 
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identifier 10.3334/ORNLDAAC/301
keyword 
[
  "earth-science-ecosystems-biosphere-terrestrial-ecosystems",
  "earth-science-radar-spectral-engineering-radar-backscatter",
  "earth-science-vegetation-biosphere-plant-characteristics"
]
license https://www.usa.gov/government-works
modified 2026-06-23
programCode 
[
  "026:000"
]
publisher 
{
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  "@type": "org:Organization"
}
spatial 
"["CARTESIAN", [{"WestBoundingCoordinate": -106.2, "NorthBoundingCoordinate": 55.93, "EastBoundingCoordinate": -98.29, "SouthBoundingCoordinate": 53.63}]]"
temporal 1994-04-19/1994-04-28
theme 
[
  "Earth Science"
]
title BOREAS RSS-17 Dielectric Constant Profile Measurements

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