Satellite based retrievals of chlorophyll, dissolved organic carbon and suspended minerals for each of the Great Lakes

Document Type

Conference Paper/Presentation

Publication Date



Michigan Tech Research Institute (MTRI) scientists have modified a Nansen International Environmental and Remote Sensing Center (NIERSC) algorithm to retrieve concentrations of chlorophyll (chl), dissolved organic carbon (doc), and suspended minerals (sm) for the Great lakes using MODIS and MERIS electro-optical satellite data. The original algorithm based on a hydro-optical (HO) model of Lake Ontario generated over 30 years ago has been updated using a comprehensive set of measured Inherent Optical Properties (IOPs) coincident with in situ properties of each Great Lake collected by Great lakes Environmental Research Laboratory (GLERL) and Upstate Freshwater Institute (UFI) scientists on cruises spanning the years 2007 to present. The new algorithms based on a unique HO model for each lake achieve the desired accuracy within 10% when compared to near coincident in situ measurements. Comparisons of the five new HO models provide insight into the ecosystems of each lake and comparison with the original lake Ontario HO model indicate how that lake has changed over that period due to climate change, anthropogenic forcing, and invasive species.

Publisher's Statement

© 2011 The authors.

Publication Title

IAGLR 54th Annual Conference on Great Lakes Research