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Delta-X: Bed and Suspended Sediment Grain Size, MRD, LA, USA, 2021, Version 2

Submitted by ORNL DAAC Staff on 2023-06-14
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Suspended and bed sediment sampling locations in the Wax Lake Delta, Louisiana. Clusters of measurements are grouped together into single points on this map. Map excludes measurements made far upstream of the Wax Lake Delta or in the Terrebonne River Basin.

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Sediment concentration and grain size distribution measurements from suspended and bed sediment samples collected as part of the Delta-X Spring and Fall 2021 campaigns.

Water Surface Elevations, MRD, Louisiana, 2021

Submitted by ORNL DAAC Staff on 2023-06-14
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 AirSWOT L3 water surface elevations collected on April 1, 2021 over the Atchafalaya Basin. Each point is colored based on its elevation with respect to the NAVD88 vertical datum (GEOID12B), as shown in the colorbar.

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Water surface elevations at selected point locations generated from the AirSWOT data collected during the Spring and Fall 2021 Delta-X deployments over the Atchafalaya and Terrebonne basins in LA, USA.

Post-Fire & Unburned Field Site Data, Anaktuvuk River Fire Area, 2008-2017

Submitted by ORNL DAAC Staff on 2023-06-14
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The 2007 Anaktuvuk River fire burned across riparian stringers and wet channels around high-centered polygons that are typically left as unburned inclusions. (2008 photo by D. Yokel). Source: Jandt et al., 2012.

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Field measurements from 26 burned and unburned transects established in 2008 in the region of the Anaktuvuk River tundra fire on the Arctic Slope of Alaska, US.
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NASA Earthdata Webinar on Site-based Visualization Tools and Services Available

Submitted by ORNL DAAC Staff on 2023-05-01
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GEDI Beam 101 shot number 24610500300213454 illustrating aboveground biomass.

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If you missed our recent Webinar on subsetting remote sensing data, a new ORNL DAAC Learning Resource provides access at your convenience.

Lake & Pond Extents in Alaska, 2019-2021

Submitted by ORNL DAAC Staff on 2023-04-14
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Four subregions of Alaska (left) with example of lakes and ponds derived from PlanetScope imagery (right). Lake and pond extents include monthly climatological composites (May - September) and 3-year composites for 2019-2021. The inset for the Fairbanks (FB) region shows a close-up of the water extents overlain on sub-meter Esri base map imagery. The Yukon Flats (YF) inset shows variability in surface area of large lakes. The Delta Junction (DJ) inset shows seasonal changes in the area of small ponds. The Yukon-Kuskokwim Delta (YKD) inset shows the spatial variability of water body areas in this region and is an example of a 3-year composite.

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Polygon spatial files of lake and pond extents for three sub-regions of Interior Alaska's boreal forest, and one tundra region located in Alaska's Yukon-Kuskokwim Delta.
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ASCENDS: Airborne CO2 LAS Retrieval, Indianapolis, IN, USA, 2014

Submitted by ORNL DAAC Staff on 2023-04-14
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CO2 Sounder instrument photographs. a) The aircraft rack with the new seed laser subsystem. b) The aircraft racks containing the laser power amplifiers and the lidar's detector subsystem. c) The lidar's transmitter and receiver telescope assembly, which is positioned over the nadir window assembly in the aircraft fuselage. The optical pulses from the fiber amplifiers, and the received optical signals are coupled via fiber optics. d) The instrument operator's console, with the control computer screens folded away (Abshire et al., 2018).

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In situ airborne measurements of atmospheric carbon dioxide (CO2) over Indianapolis, Indiana (IN) on September 3, 2014 during the morning commuter period with heavy traffic emissions.