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.

NASA's Earth Observing System Data and Information System seeks your feedback through annual ACSI survey.

ORNL DAAC Manager Bruce Wilson was featured on the 33rd episode of Research Software Engineer Stories.

In blue, the extent of the Fall 2016 channel bathymetry survey in the main channels of the Atchafalaya and Wax Lake Deltas.

Collecting in situ spectral reflectance data with the Analytical Spectral Devices (ASD) FieldSpec 3 on the Atchafalaya River.

Collection of surface water samples in the Atchafalaya River for total suspended solids (TSS) analysis.

Dr. Siqueira at the Bartlett Experimental Forest in New Hampshire conducting forest inventories to compare ground-measured biomass assessments with UAVSAR data.

After a week of extreme heat, the Carolina Chickadee was less present, compared to normal weather conditions. Image credit: NASA's Earth Observatory

Measurement of river discharge across channels.

Location of wetland sites in the Mississippi River Delta where biomass measurements were collected in the Pre-Delta-X Spring and Fall 2015 Campaigns.