ABoVE: Peak Greenness for Canadian Boreal Forest from Landsat 5 TM Imagery, 1984-2011

Description

This dataset provides a 28-year time series of peak greenness (NDVI) data derived from Landsat 5 TM imagery over the boreal forest region of Canada. Landsat 5 TM scenes were collected for 46 selected sidelap sites along gradients in climate, tree cover, and disturbance history from 1984 to 2011. Peak-greenness reflectance was computed for 30-m Landsat pixels using the maximum normalized difference vegetation index (NDVI) along with the normalized burn ratio (NBR) during the period between days of the year (DOY) 180 and 204. To facilitate trend analysis at each site, the NDVI and NBR data of the 30-m Landsat pixels were regridded to the coarser MODIS 500-m (463.3-m) spatial scale to reduce the effects of missing data and to enhance the significance of the trend. The regridded NDVI and NBR 28-year time series data at 500-m resolution are provided for each of the 46 sites. Two trend analyses were run on the 500-m resolution data and are reported for each site. Supplemental site metadata are also provided, including the number of valid Landsat pixels, land cover composition, and disturbance history, for each 500-m pixel.

Resources

Name Format Description Link
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/Canada_Boreal_Forest_Greenness.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1587
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1587
33 ABoVE: Satellite Observations of Peak Greenness for Canadian Boreal Forest, 1984-2013: Canada_Boreal_Forest_Greenness.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/Canada_Boreal_Forest_Greenness/comp/Canada_Boreal_Forest_Greenness.pdf
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/Canada_Boreal_Forest_Greenness/
21 ABoVE project site https://above.nasa.gov
34 The Canadian boreal forest study area and the 46 sites used in the analyses (identified by red boxes) mapped on top of: (A) ecozones (from http://canadianbiodiversity.mcgill.ca/english/ecozones/index.htm), (B) AVHRR NDVI trends (Beck and Goetz 2011), (C) tree cover from the MODIS VCF product (Hansen et al. 2003), and (D) fire disturbance from the Canadian Large Fire Database (Stocks et al. 2002). The sites were numbered in alphabetical order and site names are listed below the map. https://daac.ornl.gov/ABOVE/guides/Canada_Boreal_Forest_Greenness_Fig1.png

Tags

  • land-use-land-cover
  • land-surface
  • biosphere
  • human-dimensions
  • natural-hazards
  • vegetation
  • earth-science

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