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Arctic

Sub-Meter Scale Vegetation Maps for Toolik Lake, Alaska

Vegetation communities.

Vegetation communities for the Toolik footprint shown at 1:25,000 scale.

Plant communities near Toolik Lake research station in Alaska were classified at 20 cm resolution based on airborne imagery and lidar surveys.

MODIS MAIAC at ABoVE Flux Towers

ABoVE domain.

New MAIAC data were calculated at 62 flux tower sites within the ABoVE domain in Alaska and Canada.

MODIS Multi-Angle Implementation of Atmospheric Correction algorithm (MAIAC) surface reflectances are available for 62 flux tower sites in the ABoVE domain.

River Ice Breakup and Freeze-up Stages from ABoVE

Freeze-up stages.

Examples of freeze-up stages in the Grayling study area. Landsat images are displayed as color composites (R: SWIR, G: NIR, B: green), where water appears dark blue and snow/ice appears light blue.

Estimates of river ice breakup and freeze-up stages along selected reaches of the Yukon and Tanana Rivers in the Yukon River Basin in interior Alaska from 1972-2016 are now available from ABoVE.

Active Layer Thickness Across Northern Alaska

Active layer thickness.

Active layer thickness product (ALT) at 30 m resolution near Barrow (Utqiagvik), Alaska.

New data from NASA's Arctic-Boreal Vulnerability Experiment (ABoVE) provide estimates of active layer thickness from airborne radar.

Temporal Dynamics of Lake Area in the Arctic

Four ABoVE study sites.

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.

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

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