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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.

Remote Sensing and Invasive Species

Submitted by ORNL DAAC Staff on 2020-05-26
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Searching for the term remote sensing and words related to invasive species (invasive, nonnative, exotic, or nonindigenous) in Google Scholar reveals an increasing number of publications each year using these terms.

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A new Earthdata article describes how researchers are using remote sensing to map invasive species.

NASA Earth Observing Data and Tools Aid International Education

Submitted by ORNL DAAC Staff on 2019-10-07
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Dr. Don McNeil and his students analyzing data in the classroom. The projected wall image on the left shows the result of a MODIS data subset using the ORNL DAAC's Global Subsets Tool. The projected wall image on the right shows thematic maps of daily land surface temperature increase in North and South America and Antarctica using a laterally rotated Mollweide Earth projection. Image courtesy of Dr. McNeil.

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Dr. Don McNeil and students at Prince of Songkla University in Thailand use NASA Earth observing data to study environmental change.

MODIS-derived Forest Radiation Data for Brazil

Submitted by ORNL DAAC Staff on 2019-07-22
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Average daily net radiation for the 8-day timestep, 2000-03-29 to 2000-04-06, in the upper Xingu River Basin, Mato Grosso, Brazil, study area.

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Three MODIS products were used to derive daily average land surface net radiation for the forests of the upper Xingu River Basin in Mato Grosso, Brazil.