A mixed-media artwork by Jocelyn Catterson explores groundwater in the San Luis Valley, reflecting a partnership with INSTAAR Holly Barnard.

Coloradoans and our shared environment in times of challenge and change (CU OOE)

May 18, 2023

A collaborative exhibition tells the story of how Coloradans are experiencing interrelated challenges of fire, drought, and water and air quality in their communities. Artists (the CASE Fellows) partnered with scientists and communities to make visible the connections between Coloradans and their environment. Several INSTAARs acted as scientist partners. This website showcases the artwork, as well as quotes from the partners, explorations of the issues, and what you can do to act.

nowpack in the Roaring Fork Valley in western Colorado, as seen during an Airborne Snow Observatories Inc. flight in mid-April.

Scientists are using lasers to uncover the secrets of Colorado’s snowpack. So what does it mean for your water supply? (Colorado Sun)

May 12, 2023

In Colorado, 83% of the state’s water supply comes from surface water fed by winter snowpack and spring runoff. Colorado’s snowmelt also flows downstream to millions of other users in the Colorado River Basin. Having the most accurate snowpack measurement possible is vital for water agencies, which use the data to figure out how much ends up in home faucets and on farms for irrigation. The search for new, more accurate ways to measure snowpack is on.

A map slider compares compares the 2022 and 2023 snowpack in the Sierra Nevada.

A boom year for Sierra Nevada snow (NASA)

April 28, 2023

After three years of busts, 2023 was a boom year for snow in the Sierra Nevada. Data provided by INSTAARs Noah Molotch, Leanne Lestak, and Kehan Yang provide a detailed picture of snowpack across the range and at different elevations, which helps the California Department of Water Resources and other water managers better forecast snowmelt in California.

Photo of Keith Musselman

Keith Musselman joins the Department of Geography as Assistant Professor (Geography)

April 20, 2023

INSTAAR Fellow Keith Musselman has joined the Department of Geography. He studies how mountain snowpack supports sustainable ecosystems and water supply for people, wildlife, and agriculture.

Group photo from Arctic Rivers Summit in Anchorage, December 2022. Photo by Keith Musselman.

As rising temperatures affect Alaskan rivers, effects ripple through Indigenous communities (CU Boulder Today)

April 11, 2023

Streamflow is increasing in Alaskan rivers during both spring and fall seasons, primarily due to increasing air temperatures over the past 60 years, creating dangers and difficulties for local communities. New CU Boulder-led research quantifies consequences already observed and experienced for generations by local Indigenous communities who rely on these rivers for their livelihoods.

A series of atmospheric rivers in early 2023 covered the Sierra Nevada in snow. Mario Tama, Getty Images.

Why rain on snow in the California mountains worries scientists (The Conversation)

March 14, 2023

Another round of powerful atmospheric rivers is hitting California, following storms in January and February 2023 that dumped record amounts of snow. This time, the storms are warmer, and are triggering flood warnings as they bring rain higher into the mountains on top of the snowpack. Keith Musselman explains the complex risks rain on snow creates and how they might change in a warming climate.

The Colorado River flowing through the Grand Canyon on its way to Lake Mead. Bas Vermolen/Getty Images.

The search for solutions to Colorado’s water crisis (5280)

March 6, 2023

An extensive essay in 5280 outlines the history, status, and potential responses to Colorado's ongoing--and growing--water shortage. Noah Molotch describes his work calculating snow-water equivalent using remote sensing as part of the piece.

Snow covers the rugged terrain of Sierra Nevada mountaintops.

How the winter storm could impact California reservoirs (Newsweek)

Feb. 23, 2023

Southern California is bracing for a cold winter storm that is expected to bring up to 5 feet of snow accumulation in certain areas. Noah Molotch and other LTER hydrologists are interviewed about the state of California's snowpack and water supply.

Maddie Sanders, one of the CASE Fellows, works on a large mural

Announcing the Colorado Art Science Environment Fellows and Colorado State Capitol Exhibition (CU Boulder Community Outreach and Engagement)

Dec. 19, 2022

The Office for Outreach and Engagement announces the CASE Fellows program. The program pairs Colorado artists with CU Boulder scientists to produce art that will be exhibited at the Colorado State Capitol in an exhibition about how Coloradans are experiencing interrelated challenges of fire, drought, and water and air quality. Lisa Schwartz from OOE is leading the program in partnership with Shelly Sommer at INSTAAR, Boulder County Arts Alliance and with exhibition and curatorial support from Amy Hoagland.

Color coded US map of how rain-on-snow events can create potential nitrogen sources. Northern areas of the northeast, midwest, and northwest coast have high potential.

As winters warm, nutrient pollution threatens 40% of U.S. (U Vermont)

Oct. 10, 2022

As climate changes, previously frozen chemical runoff from farms and fields puts water quality at risk in over 40 states, research says. Keith Musselman part of team looking at winter nutrient pollution, a new problem caused by climate change.

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