NASA Study Finds Earth’s Lakes are Warming
In the first comprehensive global survey of temperature trends in major lakes, NASA researchers determined Earth’s largest lakes have warmed during the past 25 years in response to climate change.
Researchers Philipp Schneider and Simon Hook of NASA’s Jet Propulsion Laboratory in Pasadena, Calif., used satellite data to measure the surface temperatures of 167 large lakes worldwide.
They reported an average warming rate of 0.45 degrees Celsius (0.81 degrees Fahrenheit) per decade, with some lakes warming as much as 1 degree Celsius (1.8 degrees Fahrenheit) per decade. The warming trend was global, and the greatest increases were in the mid- to high-latitudes of the Northern Hemisphere.
Here is a map showing the geographical distribution of the water bodies studied.
As the news release mentions, this study using satellite data agrees well with the changing surface temperatures as re-analyzed by NASA GISS, which shows the more significant changes as one moves towards the Arctic.