Permafrost
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The active layer is not the permafrost
Seasonal thaw depth, ground temperature, and ground-ice content answer different questions. A guide to naming the layer before naming the change.
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When an Arctic river turns orange
Thaw, mineral exposure, changing river chemistry, and the limits of sparse water-quality monitoring.
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Rain on snow across the tundra
How ice crust can affect winter forage, why community observation matters, and why one event is not a trend.
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A midnight-sun tundra plot
Shrubs, insects, migratory birds, tundra greenness, and the daily rhythm around a small monitoring plot.