Advancing the predictive power of Earth system models through understanding
of the structure and function of Arctic terrestrial ecosystems
Progress & Accomplishments
Modeling the Spatiotemporal Variability in Subsurface Thermal Regimes across a Low-Relief Polygonal Tundra Landscape
Study develops an end-to-end high resolution modeling framework to simulate permafrost thermal dynamics of microtopography dominated polygonal tundra landscape
UAF Researchers “Scale Up” Permafrost Thermal Measurements in Western Alaska Using an Ecotype Approach
Field scientists develop a ground temperature map for western Alaska based on measured relationships between ground thermal regimes and vegetation ecotypes
Initial UAS Flights by LBNL Facilitate Planning for FY17
Sebastien Biraud provided an initial glimpse of what UAS flights could mean for integration of above- and below-ground research at field sites on the Seward Peninsula
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.
CMDV Liaison Positions between NGEE Projects and ACME Established
Four 0.5 FTE positions were funded under the CMDV project to facilitate communication and model development collaborations between NGEE Arctic, NGEE Tropics, and the ACME Land Model (ALM).
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.
Modeling the Spatiotemporal Variability in Subsurface Thermal Regimes across a Low-Relief Polygonal Tundra Landscape
Study develops an end-to-end high resolution modeling framework to simulate permafrost thermal dynamics of microtopography dominated polygonal tundra landscape.
Geomorphological and Geochemistry Changes in Permafrost after Wildfire in Kougarok, Seward Peninsula, Alaska
An event of permafrost degradation and recovery after a disturbance by 2002 Kougarok wildfire was discussed from long-term monitoring and permafrost core analysis on the central Seward Peninsula.
