ABoVE: Lake Growing Season Green Surface Reflectance Trends, AK and Canada, 1984-2019 : Arctic-Boreal Vulnerability Experiment (ABoVE)

• Main Authors: Kuhn, C., Butman, D.
• Format: Article in Journal/Newspaper
• Language: English
• Published: ORNL Distributed Active Archive Center 2021
• Subjects: TERRESTRIAL HYDROSPHERE, SURFACE WATER, SURFACE WATER FEATURES, LAKES/RESERVOIRS; TERRESTRIAL HYDROSPHERE, WATER QUALITY/WATER CHEMISTRY, WATER CHARACTERISTICS, WATER COLOR; LAND SURFACE, SURFACE RADIATIVE PROPERTIES, REFLECTANCE,; CLIMATE INDICATORS, LAND SURFACE/AGRICULTURE INDICATORS, LENGTH OF GROWING SEASON,; SPECTRAL/ENGINEERING, VISIBLE WAVELENGTHS, VISIBLE RADIANCE,; LANDSAT-5, TM; LANDSAT-7, ETM+; LANDSAT-8, OLI; growing season; boreal forests; lake color; Alaska; Canada; ABoVE domain; green reflectance; Arctic; Climate change
• Online Access: https://dx.doi.org/10.3334/ornldaac/1866; https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1866

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 evaluates changes in lake color over time in arctic and boreal regions of North America. Color is relevant for understanding physical, ecological and biogeochemical processes in some of the world's highest concentration of lakes where climate change may have significant impacts.