Geophysical monitoring shows that transitional permafrost systems evolve through complex infiltration pathways and energy fluxes, including lateral flow.

NGEE Arctic researchers have updated arctic plant functional types (PFTs) in the Energy Exascale Earth System Model (E3SM) Land Model (ELM) based on field measurements of biomass and species composition across Seward Peninsula plant communities.

Model representation of the use of the end products of photosynthesis, triose phosphates, does not capture the independent response of triose phosphate utilization (TPU) to temperature, is based on uncertain assumptions.

Increases in precipitation under the 21st century warmer climate will hasten permafrost degradation as much as warming.

The Ecosystem Type workshop was held in October and included participation from 60 scientists, students, and researchers from the NGEE Arctic team.

Scientists at UAF developed a spatially distributed permafrost model for the Seward Peninsula, and then simulated present-day ground temperature dynamics and projected those into the future according to climate scenarios.

Topography and landscapes hydrology are key environmental controls on observed Arctic shrub expansion of the past three decades.

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

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

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