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Marine heatwaves can strengthen hurricanes

Date:
September 30, 2020
Source:
Texas A&M University
Summary:
Oceanographers have found that a hurricane can be considerably strengthened in the Gulf of Mexico through the compounding effects of two extreme weather events. This process could continue in the future as ocean temperatures continue to rise around the world.
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Oceanographers have found that a hurricane can be considerably strengthened in the Gulf of Mexico through the compounding effects of two extreme weather events. This process could continue in the future as ocean temperatures continue to rise around the world, according to a study co-authored by a Texas A&M University at Galveston professor.

Kyeong Park, professor and head of the Department of Marine and Coastal Environmental Science at Texas A&M-Galveston, and colleagues have had their work published inNature Communications.

The team examined Hurricane Michael, the first Category 5 hurricane on record to impact the Florida Panhandle, in October 2018. Prior to Hurricane Michael, Tropical Storm Gordon in early September mixed cold bottom water with warm surface water, lowering the surface water temperature and increasing the capacity of absorbing more heat.

During the subsequent atmospheric heatwave, the water column could absorb more heat energy resulting in a marine heatwave, which later was used to strengthen Hurricane Michael to a Category 5 storm. Hurricane Michael became much stronger than was forecasted because it did not take into account this compound effect.

"During summer in the ocean, solar energy increases air temperature and surface water temperature so much that the entire water column -- from surface to bottom -- cannot absorb heat from the atmosphere," Park said.

水在墨西哥湾的夏季s especially prone to these conditions, the study concluded. The compound effect of Tropical Storm Gordon followed by an atmospheric heatwave provided an optimal condition for Hurricane Michael to become stronger than expected."It does appear that a storm or hurricane can get stronger if the marine conditions are right," Park said. "Hurricanes Sally and Laura in the past few weeks are good examples of stronger hurricanes because of the compound effect we described in our paper. This pattern could also exacerbate other environmental problems in sensitive ecosystems such as bleaching of coral reefs, hypoxia (low oxygen in the water) and other problem that are predicted as global warming continues."

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Story Source:

Materialsprovided byTexas A&M University. Original written by Keith Randall.Note: Content may be edited for style and length.


Journal Reference:

  1. B. Dzwonkowski, J. Coogan, S. Fournier, G. Lockridge, K. Park, T. Lee.Compounding impact of severe weather events fuels marine heatwave in the coastal ocean.Nature Communications, 2020; 11 (1) DOI:10.1038/s41467-020-18339-2

Cite This Page:

Texas A&M University. "Marine heatwaves can strengthen hurricanes." ScienceDaily. ScienceDaily, 30 September 2020. .
Texas A&M University. (2020, September 30). Marine heatwaves can strengthen hurricanes.ScienceDaily. Retrieved July 14, 2023 from www.koonmotors.com/releases/2020/09/200930194848.htm
Texas A&M University. "Marine heatwaves can strengthen hurricanes." ScienceDaily. www.koonmotors.com/releases/2020/09/200930194848.htm (accessed July 14, 2023).

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