Eyes on Earth Episode 105 – Imagery Challenges of Alaska
Remote sensing is the best way to observe Alaska, but our largest state also presents unique challenges for scientists to get clear imagery.

In this episode of Eyes on Earth, we focus on Alaska. Rich in wildlife and natural resources, not to mention its sheer size, Alaska has long been a source of fascination for remote sensing scientists. But it is also a source of frustration, with frequent cloud and snow cover and months of darkness each year. Three EROS researchers well versed in interpreting Landsat imagery from Alaska shared their insights about the Last Frontier.
Guests: Donna Viola, formerly of the Land Change Monitoring, Assessment and Projection (LCMAP) project, Jon Dewitz, the coordinator for the National Land Cover Database (NLCD) at EROS, and Neal Pastick, a physical scientist at EROS.
Host: Sheri Levisay (contractor for USGS EROS)
Producer: Tom Adamson (contractor for USGS EROS)
Release date: Tuesday, October 10, 2023
Download and Transcript Access
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Eyes on Earth Episode 20 - Mapping Alaska's Permafrost
The Arctic is changing at a more rapid rate than the rest of the planet. Some of the most significant changes are tied to the thawing of near-surface permafrost, the layers of frozen soil containing vast stocks of stored carbon. Scientists at EROS have used remote sensing tools to map the extent of near-surface permafrost in Alaska, offering a baseline for further research as change continues to...
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Eyes on Earth Episode 72 – Northward Shift of the Boreal Forest
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Remote sensing is the best way to observe Alaska, but our largest state also presents unique challenges for scientists to get clear imagery.

In this episode of Eyes on Earth, we focus on Alaska. Rich in wildlife and natural resources, not to mention its sheer size, Alaska has long been a source of fascination for remote sensing scientists. But it is also a source of frustration, with frequent cloud and snow cover and months of darkness each year. Three EROS researchers well versed in interpreting Landsat imagery from Alaska shared their insights about the Last Frontier.
Guests: Donna Viola, formerly of the Land Change Monitoring, Assessment and Projection (LCMAP) project, Jon Dewitz, the coordinator for the National Land Cover Database (NLCD) at EROS, and Neal Pastick, a physical scientist at EROS.
Host: Sheri Levisay (contractor for USGS EROS)
Producer: Tom Adamson (contractor for USGS EROS)
Release date: Tuesday, October 10, 2023
Download and Transcript Access
Related Episodes
-
-
Eyes on Earth Episode 20 - Mapping Alaska's Permafrost
The Arctic is changing at a more rapid rate than the rest of the planet. Some of the most significant changes are tied to the thawing of near-surface permafrost, the layers of frozen soil containing vast stocks of stored carbon. Scientists at EROS have used remote sensing tools to map the extent of near-surface permafrost in Alaska, offering a baseline for further research as change continues to...
-
Eyes on Earth Episode 72 – Northward Shift of the Boreal Forest
The boreal forest, or taiga, stretches across nearly 5.7 million square miles in the northern latitudes. That’s nearly a quarter of all forested lands in the world. This sprawling biome also happens to be one of the most rapidly shifting in the face of climate change. Many studies have suggested that the taiga tree line is moving northward as temperatures warm worldwide, edging itself into the...
-