ABoVE: Lake Growing Season Green Surface Reflectance Trends, AK and Canada, 1984-2019

Description

This dataset provides an annual time series of Landsat green surface reflectance and the derived annual trend during the growing season (June and July) for 472,890 lakes across the ABoVE Extended Study Domain from 1984 to 2019. The reflectance data are from Landsat-5, Landsat-7, and Landsat-8 sensors for the green band (center wavelength 560 nm). Over 270,000 Landsat scenes were evaluated and quality assured to be cloud-free and over water. Lakes were selected from HydroLAKES, a global database of lakes of at least 10 ha. Lake surface reflectance was extracted from a 3-by-3-pixel area centered on each lake centroid from the selected Landsat scenes determined from lake polygons. This dataset demonstrates changes in lake color over time in the arctic and boreal regions of North America. Color is relevant for understanding physical, ecological, and biogeochemical processes in some of the world’s highest concentrations of lakes where climate change may have significant impacts.

Resources

Name Format Description Link
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/ABoVE_GrowingSeason_Lake_Color.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1866
21 ABoVE project site https://above.nasa.gov
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/ABoVE_GrowingSeason_Lake_Color/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1866
34 Lakes with significant (p<0.05) negative trends in "greenness" of lake surface reflectance (left) and positive trends (right) across growing seasons from 1984-2019 below 75 degrees N. Source: Kuhn and Butman, 2021 https://daac.ornl.gov/ABOVE/guides/ABoVE_GrowingSeason_Lake_Color_Fig1.png
33 ABoVE: Lake Growing Season Green Surface Reflectance Trends, AK and Canada, 1984-2019: ABoVE_GrowingSeason_Lake_Color.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/ABoVE_GrowingSeason_Lake_Color/comp/ABoVE_GrowingSeason_Lake_Color.pdf

Tags

  • climate-indicators
  • land-surface
  • surface-water
  • visible-wavelengths
  • water-quality-water-chemistry
  • terrestrial-hydrosphere
  • land-surface-agriculture-indicators
  • spectral-engineering
  • surface-radiative-properties
  • earth-science

Topics

Categories