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Carbon Combustion Following Saskatchewan Wildfires

Submitted by ORNL DAAC Staff on 2020-07-28
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Spatial estimates of total carbon combustion at 30 m resolution across the 2015 fire perimeters in Saskatchewan (a) and sampled fires (b, c, d). The spatial extents of sampled fires are shown as blue rectangles in (a).

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A new Arctic-Boreal Vulnerability Experiment (ABoVE) provides spatial estimates of carbon combustion and uncertainty on a 30 m grid.

ACT-America: L3 Integrated Measurements and 2019 Data

Submitted by ORNL DAAC Staff on 2020-07-15
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ACT-America 2019 summer airborne campaign showing the flight paths for the two aircrafts and location of ground towers. Flights were concentrated on three study domains: northeast, south-central, and midwest regions of the United States.

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A new version of merged in situ atmospheric trace gases and flask data from the Atmospheric Carbon and Transport-America project is now available.

Topsoil & Agricultural Economic Losses

Submitted by ORNL DAAC Staff on 2020-05-11
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Study area in the Midwestern US with study site locations and extent of analysis. The study area was limited to the spatial extent of LiDAR topographic data (gray hillshade). Squares represent the 28 sites, a total of 210 km2, that were selected for having plowed, bare soil.

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A soil organic carbon index and remote sensing data were used to estimate erosion in Midwestern USA.

Carbon Fluxes From US Coastal Wetlands

Submitted by ORNL DAAC Staff on 2019-12-30
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Estimated CO2e fluxes and confidence interval ranges for the Mississippi River outlet in Louisiana, United States. This area contains palustrine and estuarine wetlands, and includes stable wetlands, wetland gains and loss events from 2006 to 2011. A: Total flux from 2006 to 2011. B. Uncertainty, as represented by confidence interval range (0.975 - 0.025 quantile distributions of the results of the Monte Carlo Analysis). C-E. The relative contributions of soil, biomass, and methane to the total flux (A).

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A new dataset provides maps of surface elevation, land cover, biomass, and estimated coastal wetland carbon fluxes.

Mapping Methane Emissions Across California

Submitted by ORNL DAAC Staff on 2019-12-30
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Vista-CA provides locations of methane (CH4) emitting facilities and infrastructure in the State of California. In this figure, the distribution of digesters, feed lots, and dairies across the San Francisco Bay Area and Central Valley are shown.

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The Vista-CA dataset provides locations of potential methane (CH4) emitting facilities and infrastructure across the state of California.

Methane Point-Source Emissions

Submitted by ORNL DAAC Staff on 2019-11-18
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Example of AVIRIS-NG flight lines over the southern San Joaquin Valley, Kern County, CA, in Fall 2016 and the Vista-CA potential methane emitting facilities and infrastructure for the three primary sectors (energy, agriculture, and waste).

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Maps of methane plumes were derived from Next-Generation Airborne Visible Infrared Imaging Spectrometer (AVIRIS-NG) flights over California.

Greenhouse Gas Concentrations for Six US Cities

Submitted by ORNL DAAC Staff on 2019-11-04
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Carbon dioxide concentrations at the MUR site in Salt Lake City, Utah, show a pronounced seasonal pattern of higher CO2 in the winter months.

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Hourly urban greenhouse gas measurements are available for cities in the CO2 Urban Synthesis and Analysis (CO2-USA) Data Synthesis Network.