US NSF - The Science of Spring

Image Captions and Credits

Stellar dendrites are tree-like snow crystals that have branches upon branches.

Credit: Kenneth Libbrecht, Caltech

Doppler-on-Wheels scientists Karen Kosiba and Traeger Meyer brave winds gusting more than 50 miles per hour.

Credit: Josh Wurman, Karen Kosiba, Center for Severe Weather Research

A secret world, unseen to most humans, is alive beneath the surface of winter's snow.

Credit: Kristin Link

At NSF's Niwot Ridge Long-Term Ecological Research (LTER) site in Colorado, scientists study fast-disappearing snowmelt: white gold for ecosystems and water resources.

Credit: Ryan Vachon

Scientists dig "snow pits" to study the bane of winter: deposits of dust-on-snow.

Credit: Center for Snow and Avalanche Studies

Snow gauges, operated by the National Center for Atmospheric Research, measure how much snow falls.

Credit: Scot Landolt, NCAR

Atmospheric scientist Jim Steenburgh studies snow above Little Cottonwood Canyon in Utah's Wasatch Range.

Credit: Tyler Cruickshank

Research at NSF's Southern Sierra Critical Zone Observatory (CZO) links snowmelt with downstream water supplies.

Credit: NSF Southern Sierra Critical Zone Observatory/Jenny Park

Winter as we know it: is it going, going...gone?

Credit: Asio_otus, Wikimedia Commons, CC BY-SA 3.0

Tale of the spruce vs. the hare

Credit: NPS

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