Skip to main content

DAAC Home > Resources >

You are here




Does Boreal Wildfire Release "Old" Carbon?

Radiocarbon concentration over time according to soil depth and stand age

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).

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

AirSWOT radar products from ABoVE

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.

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

Greenness Trends for Alaska and Canada

Landsat NDVI times series for 1984-2012

NDVI trends derived from 30 m Landsat NDVI times series for 1984-2012 across Canada and Alaska.

A new dataset from NASA's ABoVE campaign provides trends in NDVI over the Landsat era.

High-resolution reflectance data from the Arctic

Soil Adjusted Vegetation Index

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.

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

ABoVE Data Measure Arctic Greening

MODIS and CCaN average growing season

MODIS (left) and CCaN (right) average growing season NDVI.

A new study of long-term NDVI trends across the North Slope of Alaska presents high-resolution growing-season NDVI from MODIS.