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MASTER: SARP Campaigns from 2009 to 2018, California, USA

Submitted by ORNL DAAC Staff on 2022-08-22
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RGB composite MASTER image from data collected during the SARP campaign over Pyramid Lake, California, USA  on 2009-07-24. Image derived from bands 12, 10, 9 spanning visible to near-infrared wavelengths.

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Level 1B (L1B) data products from the MODIS/ASTER Airborne Simulator (MASTER) instrument were collected and developed by the Student Airborne Research Program (SARP).

New Tools and Services for SIF-ESDR Datasets

Submitted by ORNL DAAC Staff on 2022-03-22
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Global map of daily mean Solar Induced Fluorescence (SIF) for July 2010 at 0.05 degree resolution. The USA's Corn Belt (insert) showed the largest SIF emission during the growing Season (Image Credit: Jiaming Wen 2022).

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Datasets from the Solar Induced Fluorescence Earth Science Data Record (SIF-ESDR) have been integrated into ORNL DAAC subsetting tools, TDS with learning resources available, and Earthdata Cloud.
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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.

GEOS-5 Derived Meteorological Conditions Interpolated to Airborne Flight Tracks

Submitted by ORNL DAAC Staff on 2021-12-08
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 An example of aerosols (Salt, Dust, and Carbon and Sulfates) modeled by the Goddard Earth Observing System Version 5 (GOES-5) on 12/27/2020, image source NASA.

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Modeled meteorological conditions and tagged-CO tracer concentrations along ATom flight paths.
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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.

Multispectral Imagery, NDVI, and Terrain Models, north of Fairbanks, AK, 2019

Submitted by ORNL DAAC Staff on 2021-06-13
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Color infrared image of Big Trail Lake in the Goldstream Creek Valley north of Fairbanks, Alaska. Ground control points (yellow triangles) surround the lake. Image was produced from NIR (red), red (green), and green (blue).

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Very high resolution multispectral reflectance imagery, normalized difference vegetation index (NDVI), and digital surface and terrain models for a 0.5 km2 area surrounding Big Trail Lake (BTL) with soil collar locations for measuring carbon flux.

Methane Ebullition Hotspot Locations in Frozen Lakes near Fairbanks, Alaska

Submitted by ORNL DAAC Staff on 2021-06-06
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Location of 15 lakes surveyed for methane ebullition hotspots (green points) north of Fairbanks, AK, on October 8, 2014. Inset shows detail of Eagle Lake with locations of 43 hotspots (red points) detected by openings in lake ice.

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Locations and number of methane ebullition hotspots in frozen lakes in the southern portion of the Goldstream Valley and surroundings near Fairbanks, Alaska.