The CGT on Low Water Levels, and Name the Nature Preserve

1- What causes low water levels on the Great Lakes?

In recent decades, Lake Huron and other waters in the basin followed a 10-year trend of lows and highs, researchers say.

cgt-paper-graphic
From the paper, “Decadal oscillation of lakes and aquifers in the upper Great Lakes region of North America: Hydroclimatic implications.”

But, current low water levels have broken from that pattern.

Why? The continued lows are being driven by something called circumglobal teleconnection.

That’s according to new research by the Wisconsin Department of Natural Resources, published in the journal Geophysical Research Letters.

Circumglobal teleconnection, or CGT for short, is like the jet stream, the paper says.

It’s an atmospheric pattern that can drag warm, moist air in to the Great Lakes basin, or keep it out.

For the last 12 years, this CGT pattern hasn’t changed much, meaning less rainfall to replenish lake levels.

Unfortunately, the research doesn’t allow researchers to predict if the oscillations will change anytime soon.

But, the findings will help scientists better monitor present conditions.


2 – A urban nature preserve in Bay City is called Euclid Linear Park.

It’s not exactly an exciting name.

The Saginaw Basin Land Conservancy is partnering with Bay County officials to revitalize the park, located next to the Region VII Area Agency on Aging.

The Conservancy is looking to give the park a new nickname, and has narrowed it down to 10 finalists. They’re taking votes for what people think is the best name.

The Conservancy plans to add more native plants and fun educational programs to the preserve, and removing invasive species at the site.

Some of the names being considered: Secret Sanctuary, Woodpecker Pond, Learning Landscape, and Indigo Trail.

You can take the survey online, and see which nicknames are proving to be most popular.

The Conservancy plans to announce the results in coming weeks.

– Mr. Great Lakes, as heard at 9 a.m. Fridays in Bay City, Michigan, on Delta College Q-90.1 FM NPR.

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