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Updated GEDI L4A AGBD Estimates Released

Submitted by ORNL DAAC Staff on 2022-03-22
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Example subset of aboveground biomass density (AGBD; Mg ha-1) predictions from the GEDI Level-4A footprint version 2.1 product over Northern California, USA, spanning April to July 2019. GEDI footprints are spaced 60m along track and 600m across-track.

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Global Ecosystem Dynamics Investigation (GEDI) L4A Footprint Level Aboveground Biomass Density Version 2.1 now available.

Lake & Wetland Classification, Alaska & Canada, 2017-2019

Submitted by ORNL DAAC Staff on 2022-03-22
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Figure 1. A preliminary wetland classification for Canadian Shield lakes north of Yellowknife, NWT, Canada. Missing data in some lakes appear as white spots

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High-resolution land cover classification focused on water and wetland vegetation classes over three NASA ABoVE Campaign regions.
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Dr. Kevin Schaefer

Submitted by ORNL DAAC Staff on 2022-03-22
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Dr. Kevin Schaefer, Measures a survey location with a high-precision GPS unit near Fairbanks, Alaska in 2018. Image Credit: Roger Michaelides

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Dr. Schaefer studies permafrost, believed to be the sleeping giant of climate change.
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PhotoSpec Products, 2019 & 2020 Spring Transition Season

Submitted by ORNL DAAC Staff on 2022-03-09
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Diagram of the field set-up. This dataset provides the products collected using PhotoSpec mounted at the top of the tower. Measurements collected from other instrumentation shown are not provided in this dataset. Source: Pierrat et al., 2021

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Daily averaged SIF, relative SIF, and chlorophyll-carotenoid index, as well as three more variables for both black spruce and larch targets.
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WRF-STILT L4 Footprints and Particle Trajectories, 2016-2019

Submitted by ORNL DAAC Staff on 2022-03-09
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Subset of STILT footprint domain showing contributions overlain by HYSPLIT trajectories from receptors located at 100 (solid), 500 (dashed), and 1,000 m (dotted) at 19:35 UTC 2012-08-20.

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WRF STILT Footprint data products and particle trajectories at circumpolar locations in northern latitudes during 2016-2019.
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GEDI L4A Version 2 AGBD Estimates

Submitted by ORNL DAAC Staff on 2022-03-02
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Example subset of aboveground biomass density (AGBD; Mg ha-1) predictions from the GEDI Level-4A footprint product over Northern California, U.S., spanning April to July 2019. GEDI footprints are spaced 60m along-track and 600m across-track.

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Estimates of AGBD generated by algorithm setting group 10 affecting ~3% of the good quality footprints are now being updated.

ABoVE: Angular-corrected MODIS MAIAC Reflectance

Submitted by ORNL DAAC Staff on 2022-03-01
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MAIAC tiles (blue squares with yellow labels) and ABoVE core (red) and extended (purple) domain boundaries covering Alaska and western Canada. Source: adapted from Yu et al. 2021

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Angular corrections of MODIS MAIAC surface reflectances across the ABoVE domain in Alaska and western Canada from 2000 to 2017.
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