Granite Island:meterological station

Ocean surface stress

Granite Island is a 2.5-acre island in Lake Superior, roughly 12 miles north of Marquette in the Upper Peninsula of Michigan. The island is composed of granite rock and rises nearly 60 feet above the surface of Lake Superior. The lighthouse began operation in 1869, was automated in 1937, and then was privately purchased and restored by Scott and Martine Holman in 1999. In 2009 Dr. John Lenters, then an associate professor at the University of Nebraska-Lincoln, installed an eddy covariance system and weather station to measure lake evaporation and other atmospheric variables. In 2013 Northern Michigan University took ownership of the eddy covariance station, with LimnoTech helping to maintain the site.

Data and resources

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Background Information

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Background Information

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Background Information

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Additional information

Temporal extent	2016-06-27 – 2023-01-27
Date (creation)	2026-11-03
Status	onGoing
Update frequency	asNeeded
Metadata language	en
License	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, GLOS, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
Source metadata	ISO 19115 XML
Last updated	2026-11-04
Created	2026-11-04
API	package_show