Advancing the predictive power of Earth system models through understanding
of the structure and function of Arctic terrestrial ecosystems
Progress & Accomplishments
Multi-sensor visible, spectral, and thermal Unmanned Aerial System (UAS) flights in Nome
We conducted our first NGEE-Arctic deployment of the multi-instrument Osprey heavy-lift octocopter at the three Seward Peninsula sites where we collected high-resolution visible imagery for structure from motion (SfM) 3-D plant and terrain surface heights
Microtopography determines how active layer depths respond to changes in temperature and precipitation at the NGEE-Arctic BEO sites
We applied a well-tested three-dimensional coupled biogeochemistry, hydrology, vegetation, and thermal model (ecosys) to polygonal tundra sites to quantify and scale the effects of microtopography on active layer depths.
Impacts of microtopographic snow-redistribution and lateral subsurface processes on hydrologic and thermal states in an Arctic polygonal ground ecosystem: Development and testing in the E3SM Land Model
The NGEE-Arctic and E3SM Land Model (ELM) groups recognize the importance of 3-dimensional processes, so we developed an ELM version that includes thermal and hydrological dynamics to investigate these processes at the BEO.