Lake Champlain has one of the longest documented records of ice in and ice out dates and ice cover duration on this and other northern lakes has been changing as a result of a warming climate.  This scarf depicts the ice record on Lake Champlain, with each row a year between 1816 and 2019.  On Michale Glennon’s scarf, blue rows indicate years in which the ice did not freeze.  White rows are years in which the lake did freeze, with a bead placed in one of three columns to indicate a freeze date in January (left column), February (middle), or March (right column).  Freeze dates have shifted slightly later over time, and years without a complete freeze have increased in frequency, as highlighted by the Lake Champlain Basin Program.  Data from the National Weather Service. Other interpretations of this scarf are by Michalene Glennon (grey and blue), Priscilla Goss (white and blue), and Anne Connor (white and dark blue).

More info available here on Ravelry.

By Dr. Michale Glennon