Dr. Anthony Walker installing an automated dendrometer on a Shagbark Hickory at ORNL. These devices take high frequency measurements of stem shrink and swell, providing data on wood growth and water transport through the tree. Credit: Dr. Jeff Warren.
Dr. Peter Thornton studies the interactions of land ecosystems with other components of the Earth's climate system including biogeochemical and physical land-atmosphere feedbacks, and interactions with human systems.
For the third consecutive year, Dr. Peter Thornton has been recognized for exceptional research.
North American Forest Dynamics (NAFD) attribution type layer illustrating the type of change event where all events from 1986-2010 were combined. Source: Schleeweis et al. (2020) https://doi.org/10.3334/ORNLDAAC/1799
The North American Forest Dynamics Attribution product provides information depicting forest change across 258 million ha of the conterminous U.S.
Four variables for the same 3-hour timestep, December 8, 2015, 12:00 AM to 3:00 AM, a) precipitation flux (kg m-2 s-1) b) air temperature (K) c) shortwave radiation flux (W m-2) d) specific humidity. Source: western_USA_precipitation_3hr_2015-12.nc4
High-resolution climate data inputs are now available for 11 states in the western U.S.
Forested land in the western conterminous United States classified by priority for preservation to mitigate climate change, based on the spatial co-occurrence of vulnerability to drought and fire and potential carbon sequestration. Source: Buotte et al. 2020
Ranking of forest lands for preservation given net ecosystem productivity was derived from the Community Land Model.
A white spruce tree is instrumented with a hemispherical and field-stop photochemical reflectance index (PRI) sensor and point dendrometer at a northern treeline site along the Dalton Highway, Brooks Range, Alaska. Source: Eitel et al., 2020
Field measurements of white spruce photochemical reflectance and radial tree growth are available from the Arctic-Boreal Vulnerability Experiment (ABoVE).