Anna Liljedahl Ph.D.

  • Associate Scientist
Dr. Anna Liljedahl

Dr. Anna Liljedahl’s work is rooted in a life-long love of water and a deep sense of connection to Alaska’s environment and communities. Her research focuses on how climate change is altering the storage and movement of water in Arctic ecosystems. She has probed the impact of glacial melt and permafrost thawing on natural processes, like ponding and runoff, as well as built infrastructure, including hydropower. Dr. Liljedahl’s work combines field measurements with remote sensing data to produce high-resolution computer models at watershed scales.

Left: Discharge measurements of streams near Toolik, North Slope, Alaska in late summer.

Photo by Gerald V Frost

Right: Maintenance of a repeater communication station for meteorological data in eastern Alaska Range in late summer.

Through projects like the Permafrost Discovery Gateway, Dr. Liljedahl strives to expand access to information and to expedite knowledge-generation from big data to serve earth scientists and communities facing climate impacts.

Dr. Liljedahl fell in love with Alaska as an exchange student and currently resides in Homer, Alaska. She draws insight, inspiration, and joy from living in the community and ecosystem she studies. She enjoys local food culture, hiking, and skijoring with her pet husky.

There’s flood insurance, but no insurance for permafrost thaw. People’s houses are literally falling over and sewer pipes breaking. When it comes to climate change, we need some big ideas and out-of-the-box thinking.


Aerial photo of arctic tundra wetlands

Permafrost Discovery Gateway

The new online scientific gateway will make information of changing permafrost conditions available throughout the Arctic by providing access to very high resolution satellite data products and new visualization tools that will allow exploration and discovery for researchers, educators, and the public at large.
Permafrost Discovery Gateway Imagery Viewer

Imagery Viewer – Permafrost Discovery Gateway

The online resource will include visualization tools that expand on Google Earth and the Fluid Earth Viewer.
Alaskan salmon tagged and measured

Keeping Cool?

Is heat stress influencing the success of sub-Arctic spawning Chinook salmon in Alaska?

Selected Publications

Arctic riparian shrub expansion indicates a shift from streams gaining water to those that lose flow

Liljedahl, A.K., I. Timling, G.V. Frost, R.P. Daanen (2020). Communications Earth & Environment.


An Optimal GeoAI Workflow for Pan-Arctic Permafrost Feature Detection from High-Resolution Satellite Imagery

Udawalpola, M.R., A. Hasan, A. Liljedahl, A. Soliman, J. Terstriep, and C. Witharana (2022). Photogrammetric Engineering & Remote Sensing.