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GEDI L4A Footprint-level Aboveground Biomass Density, V2

Submitted by ORNL DAAC Staff on 2022-01-16
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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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GEDI L4A Version 2 predictions of aboveground biomass density and estimates of the prediction standard error within each sampled geolocated laser footprint now available.

Nature Scientific Data Publication Highlights Daymet V4 Model Improvements

Submitted by ORNL DAAC Staff on 2022-01-05
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Annual timeseries of daily cross-validation mean absolute error (MAE), averaged over all station days for each year, comparing results for Daymet V4 and Daymet V3. (a) MAE for estimation of daily maximum temperature. (b) MAE for estimation of daily total precipitation. Image from Thornton et al. 2021.

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A recent publication by Thornton et. al., 2021, Gridded daily weather data for North America with comprehensive uncertainty quantification, details improvements to the Daymet V4 Model.

New Tutorial for Exploring GEDI L4A available

Submitted by ORNL DAAC Staff on 2021-10-28
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The Global Ecosystem Dynamics Investigation (GEDI) instrument provides high resolution laser ranging of Earth's forests and topography from the International Space Station (ISS).

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A third tutorial for exploring the GEDI L4A Footprint Level Aboveground Biomass Density dataset is now available.

First GEDI Level 4 Biomass Data Highlighted by NASA's Earthdata

Submitted by ORNL DAAC Staff on 2021-08-26
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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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GEDI L4A Footprint Level Aboveground Biomass Density, Version 1 released.

New data for MODIS and FLUXNET-derived Global Daily Terrestrial Gross Primary Production

Submitted by ORNL DAAC Staff on 2021-05-21
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Gross primary production from FluxSat v2.0 expressed as carbon (g m-2 d-1) for July 1st, 2019.

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Version 2 of the dataset on satellite- and FLUXNET tower-derived data on daily gross primary production of global vegetation has been released.

GEDI Level 3 Data Highlighted by NASA's Earthdata

Submitted by ORNL DAAC Staff on 2021-04-11
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The GEDI instrument onboard the ISS uses three lasers split into eight tracks that fire 242 times per second illuminating a 25-meter footprint of the Earth's surface.

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GEDI Level 3 gridded estimates of canopy height, ground elevation, and laser footprint counts from the instrument's full waveform lidar from the International Space Station. Image Credit: NASA's GSFC.

Daymet Version 4 Data Products highlighted by NASA's Earthdata

Submitted by ORNL DAAC Staff on 2021-01-28
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A regional view of Daymet V4 daily total precipitation over 2 days during the time period that Hurricane Harvey made landfall in August of 2017.

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Daymet Version 4's improved algorithm and sensor timing and bias corrections result in more accurate and precise data.

ORNL DAAC Tool Provides Updated SMAP NEE Data

Submitted by ORNL DAAC Staff on 2020-11-11
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Level 4 SMAP Net Ecosystem Exchange (SPL4CMDL) Global daily 9km Gross Primary Productivity (GPP) mean subset for the Colorado Slate River Crested Butte site as graphed from the Fixed Sites Subsets Tool.

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The ORNL DAAC's Fixed Sites Subsets Tool now provides updated version 5 of the SPL4CMDL carbon product.