Observed Trends in Hurricane Power Dissipation

Figure 2.23

This figure appears in chapter 2 of the Climate Change Impacts in the United States: The Third National Climate Assessment report.

http://nca2014.globalchange.gov/report/our-changing-climate/changes-hurricanes/graphics/observed-trends-hurricane-power-dissipation

Recent variations of the Power Dissipation Index (PDI) in the North Atlantic and eastern North Pacific Oceans. PDI is an aggregate of storm intensity, frequency, and duration and provides a measure of total hurricane power over a hurricane season. There is a strong upward trend in Atlantic PDI, and a downward trend in the eastern North Pacific, both of which are well-supported by the reanalysis. Separate analyses (not shown) indicate a significant increase in the strength and in the number of the strongest hurricanes (Category 4 and 5) in the North Atlantic over this same time period. The PDI is calculated from historical data (IBTrACS73711f67-22e4-469a-af2a-6a426e41f472) and from reanalyses using satellite data (UW/NCDC & ADT-HURSAT6d2920f6-f06d-41fd-83e7-1fd61c40ae49 f748a8e5-7925-4fb4-a64c-57dd77279670). IBTrACS is the International Best Track Archive for Climate Stewardship, UW/NCDC is the University of Wisconsin/NOAA National Climatic Data Center satellite-derived hurricane intensity dataset, and ADT-HURSAT is the Advanced Dvorak Technique–Hurricane Satellite dataset (Figure source: adapted from Kossin et al. 20076d2920f6-f06d-41fd-83e7-1fd61c40ae49).

When citing this figure, please reference adapted from Kossin et al. 20076d2920f6-f06d-41fd-83e7-1fd61c40ae49.

Free to use with credit to the original figure source.

This figure was created on November 07, 2012.

This figure was derived from A globally consistent reanalysis of hurricane variability and trends .

References :

• A globally consistent reanalysis of hurricane variability and trends (6d2920f6)
• The International Best Track Archive for Climate Stewardship (IBTrACS) (73711f67)
• Trend Analysis with a New Global Record of Tropical Cyclone Intensity (f748a8e5)

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