Deeper waters are changing less consistently than surface waters in a global analysis of 102 lakes.

ABSTRACT: Globally, lake surface water temperatures have warmed rapidly relative to air temperatures, but changes in deepwater temperatures and vertical thermal structure are still largely unknown. We have compiled the most comprehensive data set to date of long-term (1970-2009) summertime vertical temperature profiles in lakes across the world to examine trends and drivers of whole-lake vertical thermal structure. We found significant increases in surface water temperatures across lakes at an average rate of + 0.37 °C decade^-1, comparable to changes reported previously for other lakes, and similarly consistent trends of increasing water column stability (+ 0.08 kg m^-3 decade^-1). In contrast, however, deepwater temperature trends showed little change on average (+ 0.

SUBMITTER: Pilla RM 

PROVIDER: S-EPMC7688658 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature