A long-term experiment in southwestern Greenland reveals that the presence of musk oxen and caribou helps stave off declines in Arctic tundra diversity brought on by climate change.
Cloud-to-ground lightning is found to be the most important controller of wildfire occurrence in the Artic tundra of Alaska from 2001 to 2019.
With infrastructure, experience, and a slice of the world’s largest snow biomes, Alaska is an essential research destination for NASA’s multiyear SnowEx campaign.
Snowdrifts prove less ephemeral than they might seem, occurring in the same places year after year.
New instruments in the research tool kit bolster scientific understanding of the ecology of a greening Arctic.
In comparing soils from two tundra wetland landscape positions, landscape position is found to matter, and toeslopes are associated with higher greenhouse gas production.
For a generation, the tundra has seen an increasing growth of vegetation, a process known as Arctic greening. A more accurate term might be “Arctic browning.”
Scientists find links between delayed freezing of Alaskan soils and higher atmospheric methane concentrations during the cold season.
Isotope data bring scientists one step closer to revealing the microbial processes behind nitrous oxide emission in the tundra.
About two thirds of the gas produced by a study area near Barrow, Alaska, came from increasingly abundant greenery covering only 5% of the landscape, researchers estimate.