TY - JOUR
T1 - Small lakes show muted climate change signal in deepwater temperatures
AU - Winslow, Luke A.
AU - Read, Jordan S.
AU - Hansen, Gretchen J.A.
AU - Hanson, Paul C.
N1 - Publisher Copyright:
© 2015. American Geophysical Union. All Rights Reserved.
PY - 2015/1/28
Y1 - 2015/1/28
N2 - Water temperature observations were collected from 142 lakes across Wisconsin, USA, to examine variation in temperature of lakes exposed to similar regional climate. Whole lake water temperatures increased across the state from 1990 to 2012, with an average trend of 0.042°C yr-1 ± 0.01°C yr-1. In large (>0.5 km2) lakes, the positive temperature trend was similar across all depths. In small lakes (<0.5 km2), the warming trend was restricted to shallow waters, with no significant temperature trend observed in water >0.5 times the maximum lake depth. The differing response of small versus large lakes is potentially a result of wind-sheltering reducing turbulent mixing magnitude in small lakes. These results demonstrate that small lakes respond differently to climate change than large lakes, suggesting that current predictions of impacts to lakes from climate change may require modification.
AB - Water temperature observations were collected from 142 lakes across Wisconsin, USA, to examine variation in temperature of lakes exposed to similar regional climate. Whole lake water temperatures increased across the state from 1990 to 2012, with an average trend of 0.042°C yr-1 ± 0.01°C yr-1. In large (>0.5 km2) lakes, the positive temperature trend was similar across all depths. In small lakes (<0.5 km2), the warming trend was restricted to shallow waters, with no significant temperature trend observed in water >0.5 times the maximum lake depth. The differing response of small versus large lakes is potentially a result of wind-sheltering reducing turbulent mixing magnitude in small lakes. These results demonstrate that small lakes respond differently to climate change than large lakes, suggesting that current predictions of impacts to lakes from climate change may require modification.
KW - lakes
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U2 - 10.1002/2014GL062325
DO - 10.1002/2014GL062325
M3 - Article
AN - SCOPUS:84923565885
SN - 0094-8276
VL - 42
SP - 355
EP - 361
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 2
ER -