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US-GL2: Granite Island

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Tower_team:
PI:	John Lenters jlenters@umich.edu - University of Michigan Biological Station
AncContact:	Chris Spence chris.spence@ec.gc.ca - Environment and Climate Change Canada
AncContact:	Peter Blanken Blanken@Colorado.EDU - University of Colorado-Boulder
Lat, Long:	46.7167, -87.4000
Elevation(m):	183
Network Affiliations:	AmeriFlux
Vegetation IGBP:	WAT (Water Bodies : Oceans, seas, lakes, reservoirs, and rivers. Can be either fresh or salt- water bodies.)
Climate Koeppen:	Dfb (Warm Summer Continental: significant precipitation in all seasons )
Mean Annual Temp (°C):	6.6
Mean Annual Precip. (mm):	762
Flux Species Measured:	H, H2O, CO2
Years Data Collected:	2010 - Present
Years Data Available:	No data available
Data Use Policy:	AmeriFlux CC-BY-4.0 Policy¹
Description:	Granite Island is a small island on Lake Superior approximately 10 miles due north of Marquette, Michigan. It is roughly 6.5 miles from shore and is occupied ... Granite Island is a small island on Lake Superior approximately 10 miles due north of Marquette, Michigan. It is roughly 6.5 miles from shore and is occupied by a lighthouse, bell tower, Coast Guard light tower, and other small structures. A flux tower to measure H, LE, and meteorological data was installed atop the bell tower in July of 2009 and has been in continuous operation since then (aside from occasional power outages or other sources of data loss). CO2 measurements were added to the flux tower in October of 2010. See More Show Less
URL:	https://superiorwatersheds.org/GLEN/GraniteIsland.htm
Research Topics:	The primary goal of this and other flux sites on the Great Lakes is to quantify lake evaporation as part of the Great Lakes Evaporation Network (GLEN). ... The primary goal of this and other flux sites on the Great Lakes is to quantify lake evaporation as part of the Great Lakes Evaporation Network (GLEN). Granite Island is the second GLEN site to be added to the AmeriFlux network, with the first one being US-GL1 at Stannard Rock lighthouse (also on Lake Superior). See More Show Less
Acknowledgment:	Data collected at this site is the culmination of the hard work and contributions of numerous individuals, institutions, and funding sources. The principal investigator (John Lenters, University of Michigan) thanks Scott Holman (land owner) for the generous use of Granite Island, along with Mike Smith and Northern Michigan University for power and internet support, as well as student contributions. Funding sources include the Great Lakes Observing System (GLOS), Northern Michigan University, the University of Nebraska-Lincoln, and LimnoTech. Additional GLEN investigators include Peter Blanken, Chris Spence, Newell Hedstrom, and Erin Nicholls. Lenters also thanks Dan Chiconsky, the Michigan DNR, US Coast Guard, and Jon Billman for logistical support and boat access.

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