Advancing the predictive power of Earth system models through understanding
of the structure and function of Arctic terrestrial ecosystems
Progress & Accomplishments
LBNL Researchers Evaluate Methane Production, Oxidation, and Emissions Across Polygon Tundra Gradients
Using field measurements of methane flux and stable isotopes, NGEE Arctic researchers identify spatial patterns in methane emissions and underlying metabolic processes across polygon types and features
BNL Plant Physiologist Publishes Roadmap for Improving Representation of Photosynthesis in Earth System Models
Scientist on the NGEE Arctic project examines how photosynthesis is represented in seven terrestrial biosphere models and makes community-wide recommendations to improve estimates of carbon uptake by terrestrial vegetation
A Multi-Scale Comparison of Modeled and Observed Seasonal Methane Emissions in Northern Wetlands
Collaborative team improved the methane module in CLM and ALM and compared predictions with NGEE-Arctic and other tower observations, NASA CARVE aircraft observations, and two atmospheric inversions and highlight new ways to improve global CH4 predictions
Biogeochemical Modeling of CO2 and CH4 Production in Anoxic Arctic Soil Microcosms
Explicit aqueous phase redox, pH, and mineral interaction dynamics were coupled to the Converging Trophic Cascade (CTC) decomposition model, enabling prediction of CO2 and CH4 production from Arctic polygonal tundra soils.
Mapping Arctic Plant Functional Type Distributions in the Barrow Environmental Observatory Using WorldView-2 and LiDAR Datasets
NGEE Arctic researchers combined high-resolution multi-spectral remote sensing imagery from the WorldView-2 satellite with light detecting and ranging (LiDAR)-derived digital elevation models (DEMs) to characterize the tundra vegetation around the BEO.