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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.

High-Quality Forest Inventory Data for Gabon, Africa

Submitted by welchjn@ornl.gov on 2020-09-28
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Gridded Land, Vegetation, and Ice Sensor (LVIS) instrument data products at 25 m spatial resolution over the Mondah Forest (left) and Mabounie (right) sites in Gabon.

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NASA's airborne Land, Vegetation, and Ice Sensor (LVIS) instrument was used to collect inventory data for Gabon's forests.

Chlorophyll Fluorescence and Modeled Irradiance of Evergreen Needles

Submitted by welchjn@ornl.gov on 2020-09-28
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Relationship between the quantum yields of fluorescence (Ft) and photosystem II (Fv/Fm) sampled Picea glauca needles in Alaska (A) and Abies grandis needles in Idaho (B). Modeled (A) and observed (B) irradiance is indicated by the coloration of points; grey points in individual sampling period panels show observations from all periods for reference. Plots of sampling periods aligned with the timing of satellite overpasses are outlined in green (A) and blue (B) boxes, respectively.

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In situ measurements of needle-level chlorophyll fluorescence and other irradiance products are now available.