Progress & Accomplishments

Impact of Lateral Flow on the Water Status of Polygon Centers

Multi-year field observations improve process representation in polygon hydrology models.

Estimating Critical Permafrost Properties from Easily Observed Permafrost State Data

NGEE Arctic researchers use fusion of numerical models and data to estimate subsurface porosities of the polygonal tundra.

Arctic Sedge Play an Important Role in the Carbon Balance of Tundra Ecosystems

Research shows how individual species can disproportionately impact ecosystem carbon balance.

Ground-Based and UAV-Collected Snow Measurements Compared across a Watershed on the Seward Peninsula

Snow measurements collected with a UAV and ground-based data collection techniques show strong agreement.

Iron and Iron-Bound Phosphate Accumulate in Soils of Polygonal Tundra

Geochemical and spectroscopic characterization of active-layer soil indicate near-surface accumulation of iron oxides that sequester the nutrient phosphate.

ORNL’s Misha Krassovski Supports International MOSAiC Expedition

Seasoned by the NGEE Arctic project, scientist gets tapped for a new opportunity.

NGEE Arctic Contributes to NOAA’s 2019 Arctic Report Card

NGEE Arctic contributed to the Arctic Report Card chapter on ’Tundra Greenness’ including changes in the cover of alder shrubs that impact local nutrient cycling.

NGEE Arctic Continues to Have a Strong Presence at the American Geophysical Union (AGU) Meetings

Numerous posters, oral, and organized sessions submitted to AGU continue to highlight science and science leadership by members of the NGEE Arctic project.

NGEE Arctic Returns to San Francisco for its Ninth All-Hands Meeting

Scientists from across the country gather for their ninth annual NGEE Arctic All-Hands meeting to celebrate success and discuss progress and plans for the project.

Investigations of topographic control on thermokarst development and the ground thermal regime in ice wedge polygons using the Advanced Terrestrial Simulator

NGEE Arctic researchers found that rim height and trough depth in ice wedge polygons considerably influence the vulnerability of the underlying permafrost, shaping feedbacks which ultimately control topographic deformation and increased soil aeration in t

Snapshot of simulated snowpack surface (cyan line) and ground temperature in a low centered polygon on December 24, 2014, demonstrating that rims function as preferential outlets of subsurface heat in winter, becoming the coldest zone of the polygon.

NGEE Arctic

Next-Generation Ecosystem Experiments

Progress & Accomplishments

Impact of Lateral Flow on the Water Status of Polygon Centers

Fig.5_20Q2.png

Estimating Critical Permafrost Properties from Easily Observed Permafrost State Data

Fig.4_20Q2.png

Arctic Sedge Play an Important Role in the Carbon Balance of Tundra Ecosystems

Fig.3_20Q2.png

Ground-Based and UAV-Collected Snow Measurements Compared across a Watershed on the Seward Peninsula

Fig.2_20Q2.png

Iron and Iron-Bound Phosphate Accumulate in Soils of Polygonal Tundra

Fig.1_20Q2.png

ORNL’s Misha Krassovski Supports International MOSAiC Expedition

Misha Krassovski

NGEE Arctic Contributes to NOAA’s 2019 Arctic Report Card

2019 NOAA Arctic Report Card

NGEE Arctic Continues to Have a Strong Presence at the American Geophysical Union (AGU) Meetings

2019 AGU

NGEE Arctic Returns to San Francisco for its Ninth All-Hands Meeting

Awards

Investigations of topographic control on thermokarst development and the ground thermal regime in ice wedge polygons using the Advanced Terrestrial Simulator

Snapshot of simulated snowpack surface (cyan line) and ground temperature in a low centered polygon on December 24, 2014, demonstrating that rims function as preferential outlets of subsurface heat in winter, becoming the coldest zone of the polygon.