Advancing the predictive power of Earth system models through understanding
of the structure and function of Arctic terrestrial ecosystems
Science Highlights
The Arctic tundra biome continued to green in the past 10 years with historically high midsummer greenness measurements
Multiscale remote sensing technologies are helping researchers better understand the effects of climate
change on vegetation productivity and regional variability in greening and browning trends.
Wetland CH4 Flux Temperature Hysteresis Explained by Substrate Availability and Microbial Activity
Using a mechanistic ecosystem model, ecosys, to demonstrate that static temperature relations cannot accurately predict wetland CH4 production and emission rates due to substrate-mediated microbial and abiotic interactions.
Alaskan carbon-climate feedbacks will be weaker than inferred from short-term manipulations
Using a mechanistic land model, Ecosys, to demonstrate that short-term (< 10 year) warming experiments produce emergent ecosystem carbon stock temperature sensitivities inconsistent with multi-decadal responses due to the tightly coupled, nonlinear nature of high-latitude ecosystems
Coupling Surface and Subsurface Hydrology in Complex Terrain
A novel mathematical formulation allows accurate solution of water flow in geometrically complicated soil structures, including overturned soil layers and other soil disturbance.