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The recent increase in Atlantic hurricane activity: causes and implications.
S B Goldenberg1, C W Landsea, A M Mestas-Nunez
1National Oceanic and Atmospheric Administration/Atlantic Oceanographic and Meteorological Laboratory/Hurricane Research Division, Miami, FL 33149, USA. Stanley.Goldenberg@noaa.gov
Science (New York, N.Y.)
|July 21, 2001
Summary
North Atlantic hurricane activity significantly increased from 1995-2000, with more major hurricanes and Caribbean impacts. This trend, driven by warmer sea temperatures, is expected to continue for decades, necessitating updated preparedness strategies.
Area of Science:
- Climatology
- Meteorology
- Oceanography
Background:
- The period 1971-1994 exhibited low North Atlantic hurricane activity.
- Recent years (1995-2000) show a marked increase in tropical cyclone events.
Purpose of the Study:
- To analyze the surge in North Atlantic hurricane activity observed since 1995.
- To identify the climatic drivers behind this increased hurricane season intensity.
- To project the future duration of this high-activity period.
Main Methods:
- Comparative analysis of hurricane activity data from 1971-2000.
- Correlation of hurricane frequency with sea-surface temperatures and vertical wind shear.
- Multidecadal climate trend assessment.
Main Results:
- A doubling of overall North Atlantic hurricane activity.
- A 2.5-fold increase in major hurricanes (Category 3 and above).
- A fivefold increase in hurricanes impacting the Caribbean region.
- Attribution of increased activity to rising sea surface temperatures and reduced vertical wind shear.
Conclusions:
- The current high level of North Atlantic hurricane activity is linked to multidecadal climate shifts.
- This heightened activity is projected to persist for another 10 to 40 years.
- A reassessment of climate adaptation and mitigation strategies is crucial.
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