DAAC Home > Resources > News

News

hotnews

Daymet Monthly Latency Dataset Temporarily Restricted

Submitted by ORNL DAAC Staff on 2022-07-29
Image Media
Image Media
Caption

Maximum Temperature from Daymet Version 4 Monthly Latency: Daily Surface Weather Data on March 31, 2021 was produced in April of 2021.

Body
Access to the Daymet V4 Monthly Latency: Daily Surface Weather Data has been restricted temporarily after data providers discover significant differences between values when compared to values produced annually.

MASTER: HyspIRI Airborne Campaign

Submitted by ORNL DAAC Staff on 2022-07-28
Image Media
Image Media
Caption

Single band images and an RGB composite image from flight track 1 acquired on 26 March 2013 over Mono Lake, California, U.S. Source: /MASTERL1B_1393500_01_20130326_1728_1733_V01.jpg from dataset MASTER: HyspIRI Airborne Campaign, California, Early Spring 2013.

Body
The MASTER instrument is a modified Daedalus Wildfire scanning spectrometer that flies on a variety of multi-altitude research aircraft

ABoVE: Tundra Plant Leaf-level Spectral Reflectance

Submitted by ORNL DAAC Staff on 2022-07-18
Image Media
Image Media
Caption

Schematic of FluoWat leaf clip operation for measuring leaf reflectance, transmittance, and upward and downward fluorescence (SIF). The leaf is placed in the clip and illuminated through the open port (A). Reflected and transmitted radiance are measured by attaching a fiber optic cable from the spectrometer to the top or bottom of the clip. To measure fluorescence spectra a low pass filter is placed across the illumination port (B). Two filters are applied in sequence, they block incident wavelengths above 650 nm and 700 nm, therefore any radiance measured in the longer wavelengths can come only from fluorescence.

Body
Leaf-level variables of high latitude plant samples collected near Fairbanks, Utqiagvik, and Toolik, Alaska, U.S., during the summers of 2019, 2020, and 2021.
Tags

ABoVE: Landsat Vegetation Greenness Trends, 1985-2019

Submitted by ORNL DAAC Staff on 2022-07-18
Image Media
Image Media
Caption

Change in greenness of boreal forest across the northern hemisphere between 2000 to 2019, estimated from an ensemble of vegetation indices derived from Landsat imagery. 

Body
Interannual trends in annual maximum vegetation greenness from 1985 to 2019 for recently undisturbed areas in the boreal forest biome.
Tags

ABoVE: Projection of Permafrost Thaw

Submitted by ORNL DAAC Staff on 2022-07-10
Image Media
Image Media
Caption

Changes in simulated permafrost dynamics. Simulated cumulative changes in (A and B) permafrost area for active layer thickness (ALT) less than 3 m from 2010-2299 and (C and D) the sensitivity of simulated changes in permafrost area to changes in mean annual air temperature for RCP4.5 (left column) and RCP8.5 (right column) model projections. 

Body
Model projections from 1901 to 2299 for the northern hemisphere permafrost domain.
Tags