Groundwater reservoirs in Bavaria have warmed considerably over the past few decades. A new study by researchers at Martin Luther University Halle-Wittenberg (MLU) compares temperatures at 35 measuring stations, taken at different depths, with data from the 1990s. Water found at a depth of 20 meters was almost one degree warmer on average than 30 years ago. The findings were published in the journal Frontiers in Earth Science.
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Source: Phys.org