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NASA Earthdata Article Highlights Methane Research

Submitted by ORNL DAAC Staff on 2021-06-29
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The AVIRIS-NG instrument detected large methane plumes coming from Sunshine Canyon Landfill during its October 2016 overpass. The plumes are shown in a yellow to red gradient, with red representing higher concentrations of methane. Image credit: Cusworth et al. 2020.

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NASA's AVIRIS-NG instrument detected multiple massive methane plumes in California and much more.

Updated Global Mangrove Distribution and Characteristics Dataset

Submitted by ORNL DAAC Staff on 2021-06-21
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Globally the tallest mangrove forests in coastal Gabon are estimated up to 63 m. The photo insets show locations where individual trees were measured in situ up to 65 m tall (Simard et al., 2019).

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An update to a dataset that characterizes the global distribution, biomass, and canopy height of mangrove-forested wetlands based on remotely sensed and field measurements.
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Forest Carbon as a Function of Last Disturbance for Conterminous USA

Submitted by ORNL DAAC Staff on 2021-06-21
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Estimated total ecosystem carbon for the northeast region of the U.S. for the years 1990 (left) and 2010 (right). The estimates were produced from an inventory-constrained version of the Carnegie-Ames-Stanford Approach (CASA) carbon cycle process model.

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This dataset provides estimates of forest carbon stocks and fluxes as a function of the number of years since the most recent disturbance for decadal benchmark years.
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Multispectral Imagery, NDVI, and Terrain Models, north of Fairbanks, AK, 2019

Submitted by ORNL DAAC Staff on 2021-06-13
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Color infrared image of Big Trail Lake in the Goldstream Creek Valley north of Fairbanks, Alaska. Ground control points (yellow triangles) surround the lake. Image was produced from NIR (red), red (green), and green (blue).

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Very high resolution multispectral reflectance imagery, normalized difference vegetation index (NDVI), and digital surface and terrain models for a 0.5 km2 area surrounding Big Trail Lake (BTL) with soil collar locations for measuring carbon flux.

SiB4 Global Terrestrial Carbon Cycle Modeled Outputs for 3 Time Steps

Submitted by ORNL DAAC Staff on 2021-06-13
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Overview of the Simple Biosphere Model (SiB4) that estimates carbon fluxes among the atmosphere, vegetation, and soils. Input information is shown in yellow boxes. These datasets include a selection of the output variables (blue boxes). Source: Haynes et al. (2020)

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Global terrestrial model outputs predicted by the Simple Biosphere Model, Version 4.2 (SiB4), at a 0.5-degree spatial resolution, 2000-2018.
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ABoVE: Frozen Lake Aerial Photographs Identify CH4 Seeps

Submitted by ORNL DAAC Staff on 2021-06-13
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Location of the study area northwest of Fairbanks, AK, USA. The map shows (a) yedoma permafrost distribution and (b) yedoma lakes and terrain of the Goldstream Valley. Data sources include Strauss et al. (2016), Alaska LiDAR Dataset (USGS, 2018), Elevation Datasets of Alaska (DGGS Staff, 2013), and Walter Anthony et al. (2020).

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Orthophotographs of lakes near of Fairbanks, AK, identify open holes in lake ice that indicate the location of releases of CH4 from thawing permafrost.