Shorter Ice Duration and Changing Phenology Influence Under-Ice Lake Temperature Dynamics.

ABSTRACT: Temperate lakes worldwide are losing ice cover but the implications for under-ice thermal dynamics are poorly constrained. Using a 92-year record of ice phenology from a temperate and historically dimictic lake, we examined trends, variability, and drivers of ice phenology and under-ice temperatures. The onset of ice formation decreased by 23 days century^-1, which can be largely attributed to warming air temperatures. Ice-off date has become substantially more variable with spring air temperatures and cumulative February through April snowfall explaining over 80% of the variation in timing. As a result of changing ice phenology, total ice duration contracted by a month and more than doubled in interannual variability. Using weekly under-ice temperature profiles for the most rece

SUBMITTER: Oleksy IA 

PROVIDER: S-EPMC11584988 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature