The Changing Face of Winter: Lessons and Questions From the Laurentian Great Lakes

Ted Ozersky, Andrew J. Bramburger, Ashley K. Elgin, Henry A. Vanderploeg, Jia Wang, Jay A. Austin, Hunter J. Carrick, Louise Chavarie, David C. Depew, Aaron T. Fisk, Stephanie E. Hampton, Elizabeth K. Hinchey, Rebecca L. North, Mathew G. Wells, Marguerite A. Xenopoulos, Maureen L. Coleman, Melissa B. Duhaime, Ayumi Fujisaki-Manome, R. Michael McKay, Guy A. MeadowsMark D. Rowe, Sapna Sharma, Michael R. Twiss, Arthur Zastepa

Research output: Contribution to journalReview articlepeer-review

18 Scopus citations


Among its many impacts, climate warming is leading to increasing winter air temperatures, decreasing ice cover extent, and changing winter precipitation patterns over the Laurentian Great Lakes and their watershed. Understanding and predicting the consequences of these changes is impeded by a shortage of winter-period studies on most aspects of Great Lake limnology. In this review, we summarize what is known about the Great Lakes during their 3–6 months of winter and identify key open questions about the physics, chemistry, and biology of the Laurentian Great Lakes and other large, seasonally frozen lakes. Existing studies show that winter conditions have important effects on physical, biogeochemical, and biological processes, not only during winter but in subsequent seasons as well. Ice cover, the extent of which fluctuates dramatically among years and the five lakes, emerges as a key variable that controls many aspects of the functioning of the Great Lakes ecosystem. Studies on the properties and formation of Great Lakes ice, its effect on vertical and horizontal mixing, light conditions, and biota, along with winter measurements of fundamental state and rate parameters in the lakes and their watersheds are needed to close the winter knowledge gap. Overcoming the formidable logistical challenges of winter research on these large and dynamic ecosystems may require investment in new, specialized research infrastructure. Perhaps more importantly, it will demand broader recognition of the value of such work and collaboration between physicists, geochemists, and biologists working on the world's seasonally freezing lakes and seas.

Original languageEnglish
Article numbere2021JG006247
JournalJournal of Geophysical Research: Biogeosciences
Issue number6
StatePublished - Jun 2021


  • Laurentian Great Lakes
  • climate change
  • seasonality
  • winter limnology


Dive into the research topics of 'The Changing Face of Winter: Lessons and Questions From the Laurentian Great Lakes'. Together they form a unique fingerprint.

Cite this