(Lightning strikes are expected to increase as a result of global warming according to a 2014 study in Science.)
Added atmospheric moisture content — which increases by about 7 to 8 percent per degree Celsius of global temperature rise — generates more storm clouds with higher tops. These clouds, in turn, produce an increase in the number of overall lightning strikes. According to a Science study published during 2014, lightning strikes are expected to increase by 50 percent in the United States alone due to the human-forced warming of our world. Europe, which sits between numerous unstable air masses — the Arctic Ocean air mass to the north, the Greenland air mass to the northwest, and the rapidly changing North Atlantic air mass — is likely to see ramping climate instability even as overall atmospheric moisture levels and storm-generating potentials increase.