Lake surface temperature in 2017

What is it about?

It describes the surface temperature of 688 lakes (satellite measurements) and 34 lakes (in situ measurements) in 2017.

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Why is it important?

In 2017, satellite-derived lake surface temperatures were lower than observed in 2016 by 0.3°C in the 688-lakes average, though the mean anomaly for 2017 was still +0.4°C above the baseline, continuing the long-term lake surface warming trend identified in previous analyses and reflecting the observed increase in global surface air temperature. Lake surface water temperatures in 2017 were the second highest since 1995 (the earliest satellite data used), behind only 2016. Eight of the ten warmest years for lake surface waters in the record have occurred since 2007 (1998 and 2001 rank fifth and ninth, respectively).

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