Progress & Accomplishments

A model of ice wedge polygon drainage in changing Arctic terrain

A new fast model based on hydrologic first-principles captures drainage from inundated ice-wedge polygons.

NGEE Arctic Chief Scientist contributes to State of the Climate in 2019 report

Joined by colleagues from around the world, Vladimir Romanovsky documents the current state of terrestrial permafrost for wide areas of the Arctic.

Understanding inundation and drainage patterns of ice-wedge polygons

New insights are provided into drainage timing and flow patterns in inundated ice-wedge polygons based on fundamental hydrogeology

Identifying polygonal ground in arctic regions using GLCM texture features for random forest classification

Image textural features and machine learning models can effectively identify broad regions of polygonal ground topography in the arctic using panchromatic imagery.

Metadata and NGEE Arctic Search Tool Metrics

View metrics about the NGEE Arctic metadata records and data downloads.

Katrina Bennett to assume Q5 co-leadership responsibilities

Opportunities emerge for leadership in the NGEE Arctic project and we welcome Katrina Bennett to her new co-lead responsibilities for permafrost hydrology.

Permafrost Thermal Conditions are Sensitive to Shifts in Snow Timing

Numerical experiment suggest that reliable projections of air temperature and total snowfall may not be sufficient to understand permafrost degradation.

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.