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Forest Change From Canopy Cover Loss from 1986-2010

Submitted by ORNL DAAC Staff on 2020-11-30
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North American Forest Dynamics (NAFD) attribution type layer illustrating the type of change event where all events from 1986-2010 were combined. From Schleeweis, K.G. et al. 2020

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The North American Forest Dynamics Attribution product provides information depicting forest change across 258 million ha of the conterminous U.S.

High-Resolution Sub-Daily Climate Driver Data for Western US

Submitted by ORNL DAAC Staff on 2020-11-30
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Four variables for the same 3-hour timestep, December 8, 2015, 12:00 AM to 3:00 AM, a) precipitation flux (kg m-2 s-1) b) air temperature (K) c) shortwave radiation flux (W m-2) d) specific humidity. Source: western_USA_precipitation_3hr_2015-12.nc4

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High-resolution climate data inputs are now available for 11 states in the western U.S.

Ranking Forest Land for Carbon Sequestration/Species Richness

Submitted by ORNL DAAC Staff on 2020-11-30
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Forested land in the western conterminous United States classified by priority for preservation to mitigate climate change, based on the spatial co-occurrence of vulnerability to drought and fire and potential carbon sequestration. Source: Buotte et al. 2020

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Ranking of forest lands for preservation given net ecosystem productivity was derived from the Community Land Model.

Growth Measurements of White Spruce in the Arctic

Submitted by ORNL DAAC Staff on 2020-11-30
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A white spruce tree is instrumented with a hemispherical and field-stop photochemical reflectance index (PRI) sensor and point dendrometer at a northern treeline site along the Dalton Highway, Brooks Range, Alaska. Source: Eitel et al., 2020

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Field measurements of white spruce photochemical reflectance and radial tree growth are available from the Arctic-Boreal Vulnerability Experiment (ABoVE).

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.

Sectored Annual and Hourly Estimates of CO2 from 2010-2015

Submitted by ORNL DAAC Staff on 2020-10-05
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Vulcan v3.0 FFCO2 annual total emissions (tC/km2/year) for the United States in 2011 at a 1 km resolution.  Source: Figure 3(a) in Gurney et al., 2020.

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Two new datasets provide high-resolution estimates of carbon dioxide sector emissions from fossil fuels and cement production for the USA.

Tidal Wetlands Productivity for Conterminous US Based on Blue Carbon

Submitted by ORNL DAAC Staff on 2020-10-05
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Example of average daily gross primary production (GPP) per m2 at 250 m resolution shown for wetlands in the North and South Ten Thousand Islands in the Florida Everglades. Mapped values are an average of all 16-day periods from 2000-2019. Source: Feagin et al., 2020.

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Tidal wetland gross primary production estimates across the Conterminous US derived with the spatially-explicit Blue Carbon model.

Greenhouse Gases Measured from Instrumented Communication Towers

Submitted by ORNL DAAC Staff on 2020-10-05
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The communication tower at the Wessington, South Dakota site. This site was instrumented from January of 2017 to September of 2019.

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Level 1 atmospheric greenhouse gas concentrations are available for towers across the central and eastern USA.