Progress & Accomplishments

Methane Oxidation in Degraded Polygonal Tundra

Significant methane oxidation activity was observed in incubations of flat-centered polygon transitional soil and permafrost layers, which also exhibited high levels of methane production activity under anoxic conditions.

Representing Leaf and Root Traits Improves Carbon and Nitrogen Cycling Predictions

Explicitly representing plant physiological root traits and improving the nutrient competition algorithm with the Equilibrium Chemistry Approximation removes known biases in CLM and ALM.

Coincident Above- and Below-Ground Autonomous Monitoring Strategy: Development and Use to Monitor Arctic Ecosystem Freeze-Thaw Dynamics

Soil moisture and thaw thickness strongly influence vegetation, and can serve as a proxy for vegetation greenness (and vice versa) during the growing season.

Strait Science Series - The Seward Peninsula’s Future: Wetter or Drier?

NGEE Arctic participates in University of Alaska Fairbanks Northwest Campus’ platform to discuss ongoing hydrology research efforts with the community.

Demonstration of CLM-PFLOTRAN Coupling Lays a Foundation for Biogeochemistry Simulation Across Scales

An implicit time-stepping model for decomposition, nitrification, denitrification, and plant nutrient uptake was implemented in the Community Land Model (CLM), the land ecosystem component of a coupled Earth System Model.

A Generic Law-of-the-Minimum Flux Limiter for Simulating Substrate Limitation in Biogeochemical Models

Complex biogeochemical networks that include many biotic and abiotic processes can be limited by different substrates under different conditions during their temporal evolution.

Uncovering Labile Soil Organic Matter Degradation Pathways in Polygonal Tundra

Permafrost thaw and climate warming accelerates frozen soil organic carbon (SOC) degradation and emission of greenhouse gases, but what specific degradation pathways for labile SOC occur prior to CH4 and CO2 production are not well understood.

New Website for NGEE Arctic

The NGEE Arctic website, to be released later in April, will have a new look and feel moving from an unsupported Drupal 6 into Drupal 7.

NGEE Arctic Data Management Team Working with NGEE Tropics

The ORNL NGEE Arctic Data Management Team (DMT) is lending expertise and tools deployed for the NGEE Arctic data effort to the NGEE Tropics project. The DMT has deployed a multi-faceted system for NGEE Arctic comprised of the On-line Metadata Editor (OME)

Metadata and NGEE Arctic Search Tool Statistics - March 31, 2016

These statistics reflect metadata submission and usage of the NGEE Arctic Search Tool since its implementation in the spring of 2014. Metadata records reflect a combination of data, information and documentation that form a collection. While all metadata