Great Lakes Optical Properties Geospatial Database
15 Years of Great Lakes Water Measurements
The Great Lakes Optical Properties Geospatial Database (GLOPGD) is a representation of in situ optical and water quality measurements made in all five of the Great Lakes over the last 15 years. This geospatial database has been collected by various leading groups and institutions such as the NOAA Great Lakes Environmental Research Lab, the Upstate Freshwater Institute, the Michigan Tech Research Institute (MTRI) and others in the Great Lakes to help better understand long term changes due to anthropogenic forcing, climate change, and invasive species. This is the first time that these data have been made widely available to Great Lakes scientists and other stakeholders through the web.
Delivering Optical and Water Chemistry Data
GLOPGD contains spatially-located optical data such as the diffuse attenuation coefficient (Kd), Remote Sensing Reflectance (Rrs), kPAR, absorption, backscatter, CDOM absorption, and photic zone depth as well as many other parameters. Water chemistry data includes concentration measurements of chlorophyll a, dissolved organic carbon (DOC), total and volatile suspended solids (TSS and VSS) as well as colored dissolved organic matter (CDOM). GLOPGD will allow users to "map" these available parameters to provide better access to area of interest data sets. Users will able to query the GLOPGD data a multitude of ways to ensure the only wanted data is returned. Queried data will available for download in a number of file types including shapefiles, KML, and CSV.
Start Exploring
The GLOPGD web application offers a user-friendly client for accessing and visualizing Great Lakes optical properties. From this web portal, you can view all of the GLOPGD holdings and export them to CSV format. The application is still under development; more features will be added soon!