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Great Lakes

Graph showing range of water levels in the Great Lakes and the potential benefit from risk management strategies including insurance and dredging
Posted inEditors' Highlights

New Analysis Helps Manage Risks to Shipping in the Great Lakes

by Jim Hall 11 May 202018 October 2022

Modeling of mysteriously fluctuating water levels in the Great Lakes has helped to optimize the prices of shipping insurance contracts along with investments in dredging navigation channels.

Toronto skyline from Lake Ontario
Posted inNews

Great Lakes Cities’ Sewer Designs Mean Waste in the Waters

by D. Rosenthal 4 May 20203 November 2021

In older cities, a single system of pipes may transport sewage and stormwater runoff. As the climate crisis brings more intense storms, urban areas like Toronto are overhauling their drainage systems.

An aerial view of an agricultural landscape
Posted inResearch Spotlights

Mapping Nutrient Inputs in the Great Lakes Basin

Aaron Sidder, freelance science writer by Aaron Sidder 25 March 202024 February 2023

A new tool links nitrogen and phosphorus applications to land use classifications to better understand where and how much of the nutrients enter watersheds in the U.S. Great Lakes Basin.

Flooding at a home on the Saint Lawrence River.
Posted inNews

What Caused the Ongoing Flooding on Lake Ontario?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 3 August 20179 March 2023

The floodwaters have also affected residents downstream along the Saint Lawrence River. Although politicians quickly blamed regulations, scientists say it was a perfect storm of natural factors.

Environmental data buoy at Granite Island Light Station, a Great Lakes Evaporation Network site on Lake Superior.
Posted inScience Updates

Predicting a Great Lake's Response to a Warm Winter

by J. D. Lenters, P. D. Blanken and B. Kerkez 11 November 201616 March 2023

The Superior Challenge Summit: Forecasting El Niño's Impact on the World's Largest Lake; Ann Arbor, Michigan, 17–19 May 2016

Outflow from Lake Superior to Lake Michigan-Huron through the St. Marys River was high in 2013 and 2014.
Posted inResearch Spotlights

What Caused Record Water Level Rise in the Great Lakes?

by Terri Cook 21 July 201624 February 2023

A new modeling framework offers insight into how specific lakes' water levels respond to short- and long-term climate trends.

Posted inNews

Algae Blooms and Gas Wells Drive Lake Erie Methane Emissions

by R. Heisman 29 March 20162 November 2021

In one of the first studies to investigate large lakes as methane sources, researchers found that Lake Erie is releasing more of the potent greenhouse gas than expected.

Posted inResearch Spotlights

Great Lakes Hold Sway over Water and Carbon Cycling

by L. Strelich 21 October 20151 March 2023

The largest body of fresh water on Earth governs the exchange of gases between water and the atmosphere that makes it a carbon sink for the entire region.

High waves buffet Michigan’s Grand Haven Lighthouse, located on the eastern shore of Lake Michigan.
Posted inScience Updates

Water Levels Surge on Great Lakes

by A. D. Gronewold, A. H. Clites, J. Bruxer, K. W. Kompoltowicz, J. P. Smith, T. S. Hunter and C. Wong 17 March 20153 March 2023

The recent 2-year surge represents one of the most rapid rates of water level change on the Great Lakes in recorded history and marks the end of an unprecedented period of low water levels.

Posted inNews

Miners Left a Pollution Trail in the Great Lakes 6000 Years Ago

by J. Rosen 24 December 201429 September 2021

Scientists find evidence of ancient copper mining in polluted lake sediments from Isle Royale National Park.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
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“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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