Global warming: severe hurricanes occur in the USA 3,3 times more often than 100 years ago
According to a new study, large devastating hurricanes hit the United States three times more often than a century ago. Writes about this Fox Business.
Experts usually measure the damage caused by a hurricane, summing up how much damage it caused to people and cities. This approach does not include severe storms that affect only sparsely populated areas. A Danish research team came up with a new dimension that took into account how big and strong the hurricane was, and not how much damage it brought.
Looking at 247 hurricanes that hit the United States since 1900, researchers found that 10 percent of the worst hurricanes, with a total devastation area of more than 467 square miles (1209 square kilometers), occur 3,3 times more often.
According to lead author of the study, Aslak Grinstead, 8 of 20 hurricanes with the largest area of total destruction since 1900 of the year have occurred over the past 16 years.
Of these, two hurricanes stood out: 2017 Harvey, with a total destruction area of 4570 square miles (11 square kilometers) and 835 Katrina, with 2005 square miles (2942 square kilometers). The average was 7621 square miles (159 square kilometers), which means that the damage from Harvey was 411 times more than the average from a major hurricane.
Climatologists have predicted that higher temperatures in the oceans and atmosphere as a result of burning coal, oil, and other fuels create more extreme weather conditions and hurricanes.
"Their result is consistent with the expected changes in the frequency of the strongest hurricanes, as well as an increase in the frequency of very slow storms that hit land in the United States," said Jim Cossin, a scientist at the National Oceanic and Atmospheric Administration.
However, other experts were not so convinced. Hurricane researcher at Colorado State University Phil Klotsbach says that his study of the most severe storms in the United States based on atmospheric pressure does not show an increase.
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