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Midwestern USA 2018 crop growing season Land Cover-Specific SIF

Submitted by ORNL DAAC Staff on 2021-04-19
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Examples of spatial patterns of reconstructed SIF at 4 km resolution. Only pixels with a fraction of the specific vegetation type larger than 0.1 are shown. For Total SIF, only pixels with a fraction of corn, soybean, grass/pasture, and forest larger than 0.8 are displayed.

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Estimated solar-induced chlorophyll fluorescence (SIF) of specific vegetation types and total SIF available at 4-km resolution.
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NASA Earthdata Article Highlights Delta-X Airborne Mission

Submitted by ORNL DAAC Staff on 2021-04-14
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Delta-X is a 5-year NASA Earth Venture Suborbital-3 mission to study the subsidence and growth of the Mississippi River Delta in the United States. 

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NASA researchers are using high resolution airborne data to determine vulnerability and resilience of the Mississippi River Delta.

Sea Water Elevation Profile and Change from Pre-Delta-X Campaign Datasets

Submitted by ORNL DAAC Staff on 2021-04-05
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Collage of dataset airborne imagery from AirSWOT, UAVSAR and the ASO lidar instrument provide examination of water level elevation estimates and changes.

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Five Pre-Delta-X Airborne datasets recently published provide sea water level profile and change derived from UAVSAR, AirSWOT, and lidar.

Pre-Delta-X: AVIRIS-NG/UAVSAR AGB, AVIRIS-NG TSS and Surface Reflectance

Submitted by ORNL DAAC Staff on 2021-04-05
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Pre-DeltaX image highlights: AVIRIS-NG/UAVSAR Biomass (upper left), AVIRIS-NG Total Suspended Solids (lower left), and AVIRIS-NG Surface Reflectance (right).

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Pre-Delta-X Campaign datasets now available: AGB from AVIRIS-NG/UAVSAR, surface reflectance and total suspended solids from AVIRIS-NG.

Wolf Denning Phenology and Reproduction in ABoVE Core Domain, 2000-2017

Submitted by ORNL DAAC Staff on 2021-03-24
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Spatial distribution of eight wolf study populations used in an assessment (from 2000-2017) of denning phenology in response to climate signals. The base map shows the day of the year representing the NDVI-derived start of the growing season in 2010. 

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Eighteen years of annual gray wolf (Canis lupus) denning spatial information and timing across within the NASA ABoVE Core Domain recently published.

Digital Elevation Models for the Global Change Research Wetland

Submitted by ORNL DAAC Staff on 2021-03-24
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DEM of the Global Change Research Wetland (GCReW) site generated using the LEAN (LiDAR Elevation Correction with NDVI) method. LEAN uses ground measurements of elevation and NDVI in a multivariate linear regression model to estimate vertical bias.

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Four digital elevation models (DEMs) at 1-m resolution and 2106 model performance metrics for the GCReW site, Maryland, USA are now available.