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Temporal Dynamics of Lake Area in the Arctic

Submitted by ORNL DAAC Staff on 2019-05-14
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Near-daily CubeSat imagery was collected within four large regions across the ABoVE study area. Timeseries of lake area were derived from the CubeSat imagery for more than 80,000 lakes in these regions.

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Near-daily CubeSat imagery provides information on the seasonal dynamics of more than 80,000 lakes.

Greenhouse Gases from Arctic-CAP

Submitted by ORNL DAAC Staff on 2019-05-06
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Arctic-CAP flight lines (orange) sampled Arctic and boreal regions of Alaska and Canada. Pins mark the locations of vertical profiles that were repeatedly acquired during the 2017 growing season.

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Atmospheric carbon and methane concentrations were measured during the 2017 Arctic Carbon Aircraft Profile (Arctic-CAP) flights throughout Alaska and western Canada.

Does Boreal Wildfire Release "Old" Carbon?

Submitted by ORNL DAAC Staff on 2019-04-18
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Radiocarbon concentration (delta14C) in the atmosphere over time, showing the bomb peak in 1966 (red dotted line) and theoretical positions of delta14C of soil depth increments (points).

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Researchers with NASA's ABoVE field campaign measured soil and forest stand age at burned sites in Canada's Northwest Territories.

AirSWOT Ka-band Radar from ABoVE

Submitted by ORNL DAAC Staff on 2019-04-01
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Example of AirSWOT radar products in ABoVE Projection at 3.6 m resolution, for a flight over the ABoVE C grid Ch065v034. Left: Shape for backscatter image. Middle: Backscatter magnitude shows bright reflection in the near range and no returns, yielding regions of no data, in the far range. Right: Derived elevation product.

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The ABoVE project has released data from AirSWOT flights in Summer 2017 collected over Alaska and Canada.

High-resolution reflectance data from the Arctic

Submitted by ORNL DAAC Staff on 2019-03-15
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Soil Adjusted Vegetation Index (SAVI) for a site on the Seward Peninsula, Alaska collected on August 14, 2018. SAVI is similar to NDVI, but it suppresses the effects of soil pixels and it uses a canopy background adjustment factor. The reflectance data used to calculate SAVI was collected by the AVIRIS-NG instrument on a flight over the Seward Peninsula, Alaska, on August 14, 2018.

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New AVIRIS-NG data from the 2018 ABoVE airborne campaign and an accompanying data processing tutorial are now available.