Lightning strikes are one of the main causes of wildfire in Australia. As the planet’s temperature warms, the frequency of lightning strikes is expected to grow with it.
Currently, lightning strikes the earth’s surface nearly eight million times a day. This number is expected to ‘dramatically increase’ as global temperatures rise, according to a study published by Science. The U.S., for example, could experience a 50% increase in the number of lightning strikes by the end of the century, if greenhouse gas emissions are not curbed.
This increase is already being felt in Australia and has implications for how we plan for, and fight fire. Because they start from a single point, lightning caused fires are initially small and can be easily contained before they turn into blazes, if there are ground crews or planes or helicopters available. As was shown by last summer’s fires, in a bad season, we simply don’t have enough resources to do this.
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