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Wildfire Burn Severity Across Alaska and Canada

30-m dNBR for a burn scar in ABoVE grid tile Bh05Bv03

The differenced Normalized Burned Ratio (dNBR) for a burn scar from fires in 2015 within ABoVE grid tile Bh05Bv03. A higher dNBR indicates a higher fire severity.

New data from NASA's ABoVE campaign provides a high-resolution record of differenced Normalized Burned Ratio (dNBR) for fires from 1985-2015.

ACT-America Winter 2017 Data Now Available

ACT-America team on tarmac in Shreveport, LA.

The ACT-America team on the tarmac with the NASA Langley Beechcraft B-200 King Air and NASA GSFC C-130-H Hercules aircraft in Shreveport, LA.

Data from the Winter 2017 campaign has been added to all ACT-America datasets.

Carbon Fluxes in Coastal Ecosystems

Study domain for mean annual fluxes of carbon in Coastal Ecosystems of Eastern North America

Study domain indicating locations of estuaries and shelf waters in the three subregions: the Gulf of Maine (GOM), the Mid-Atlantic Bight (MAB), and the South Atlantic Bight (SAB; From Najjar et al. 2018).

New data from the North American Carbon Program (NACP) provide mean annual carbon fluxes in coastal areas of Eastern North America.

AfriSAR Measures African Forests

A researcher records data on the mangrove forest.

Goddard Space Center’s Dr. Laura Duncanson records data on tree heights and diameters in the Pongara mangrove forest during field work in 2016. (Credit: NASA/Carla Thomas)

NASA's AfriSAR campaign provides critical data on canopy height and structure of tropical forests in Gabon, West Africa.

Daymet Goodness-of-Fit Statistics for 2017

Daymet station-level cross-validation statistics for year 2016

Station-level cross validation of Daymet at weather station locations showing annual mean absolute error (MAE; degrees C) for the variable maximum temperature (tmax) in 2016.

Daymet provides information to access the accuracy and uncertainty of modeled climate data at each ground station location or two-degree tile.

Custom Subsets of VIIRS Land Products

true color reflectance image from VIIRS

VIIRS/S-NPP true color reflectance image (Red = Band I1, Green = Band M4, Blue = Band M3) from May 7, 2018, visualized in NASA’s WorldView.

VIIRS land products are now available for visualization and download from ORNL DAAC's MODIS subsetting tools suite.

Updates to Tower-based ACT-America Data

ACT-America combines ground-based, airborne, and satellite observations of greenhouse gases.

ACT-America combines ground-based, airborne, and satellite observations of greenhouse gases.

Measurements of CO2, CO, and CH4 concentrations at tower sites have been updated to include years 2015 - 2017.

ACT-America CO2 and CH4 Merge Data

ACT-America is a NASA campaign to study carbon transport in the atmosphere

ACT-America is a NASA Earth Venture Suborbital-2 mission to study the transport and fluxes of atmospheric carbon dioxide and methane across three regions in the eastern United States.

Merged airborne atmospheric gas and navigational data from the Summer 2016 and Winter 2017 campaigns are now available.

Who uses NASA Earthdata? Dr. Roisin Commane does!

Dr. Commane NASA ATom

Dr. Commane aboard NASA's DC-8 research aircraft during ATom. Photo by Dr. Bernadett Weinzierl, Univ. of Vienna, and courtesy of Dr. Commane.

Dr. Commane uses NASA data to understand surface processes affecting atmospheric chemistry.

Learning Resources at ORNL DAAC

Screenshot of Learning Page

A new Learning Resources Page is now available to provide user support for ORNL DAAC products and services.