Researchers at the Great Lakes Observing System are enlisting locals to measure ice thickness on the Great Lakes and inland lakes this winter. The data will refine ice-forecasting models amid climate-driven changes. This citizen science effort highlights the need for detailed observations beyond satellite capabilities.
In Ann Arbor, Michigan, the Great Lakes Observing System (GLOS) is launching its second year of a citizen science program to gather ice thickness data from the public. Satellites effectively track ice coverage but fall short on thickness, which is crucial for safety and navigation. "Usually it’s the scientists putting data out to the public, and this time, we’re asking the public to give feedback to the scientists so they can improve the models," said Shelby Brunner, GLOS's science and observations manager.
Last winter, about a dozen participants submitted around 30 measurements, revealing greater ice variability than anticipated. Participants, including ice fishers attuned to local conditions, can submit data online while ice persists, with stipends available. Brunner noted that buoys, typically used for data collection, are removed during harsh winter conditions, making public input essential.
The Great Lakes, vital for over 30 million people as a drinking water source per the National Oceanic and Atmospheric Administration, are experiencing shifting ice patterns due to climate change. Research indicates average ice cover has declined since the 1990s, though variability remains high; as of January 28, 38 percent of the lakes were iced over, exceeding the historical average.
Educators are also involved. Mandi Young, a science teacher in Traverse City, led her middle school students to measure ice on Cedar Lake last year, adding thickness to their ongoing water temperature and depth records. "The students really love it. They get the chance to be outside. They know that their information is being saved and used by other community members," Young said. This winter, her class will use an auger for more precise drilling, sparking curiosity with questions like whether ice will break under thrown rocks.
Brunner emphasized the long-term value: "We don’t get to go back in time and measure the past. We have to measure it now and keep it safe. So we can use it for reference for how things are looking in the future." The archived data will aid future research, benefiting ice fishers, ship captains, and scientists alike.