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Research Article

Projected Atlantic hurricane surge threat from rising temperatures

Aslak Grinsted, John C. Moore, and Svetlana Jevrejeva
  1. aState Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China;
  2. bCentre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark;
  3. cArctic Centre, University of Lapland, FI-96101 Rovaniemi, Finland;
  4. dDepartment of Earth Sciences, Uppsala University, SE-75236 Uppsala, Sweden; and
  5. eNational Oceanography Centre, Liverpool L3 5DA, United Kingdom

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PNAS April 2, 2013 110 (14) 5369-5373; https://doi.org/10.1073/pnas.1209980110
Aslak Grinsted
aState Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China;
bCentre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark;
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  • For correspondence: ag@glaciology.net john.moore.bnu@gmail.com
John C. Moore
aState Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China;
cArctic Centre, University of Lapland, FI-96101 Rovaniemi, Finland;
dDepartment of Earth Sciences, Uppsala University, SE-75236 Uppsala, Sweden; and
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  • For correspondence: ag@glaciology.net john.moore.bnu@gmail.com
Svetlana Jevrejeva
aState Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China;
eNational Oceanography Centre, Liverpool L3 5DA, United Kingdom
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  1. Edited by Kerry A. Emanuel, Massachusetts Institute of Technology, Cambridge, MA, and approved February 11, 2013 (received for review June 12, 2012)

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Abstract

Detection and attribution of past changes in cyclone activity are hampered by biased cyclone records due to changes in observational capabilities. Here, we relate a homogeneous record of Atlantic tropical cyclone activity based on storm surge statistics from tide gauges to changes in global temperature patterns. We examine 10 competing hypotheses using nonstationary generalized extreme value analysis with different predictors (North Atlantic Oscillation, Southern Oscillation, Pacific Decadal Oscillation, Sahel rainfall, Quasi-Biennial Oscillation, radiative forcing, Main Development Region temperatures and its anomaly, global temperatures, and gridded temperatures). We find that gridded temperatures, Main Development Region, and global average temperature explain the observations best. The most extreme events are especially sensitive to temperature changes, and we estimate a doubling of Katrina magnitude events associated with the warming over the 20th century. The increased risk depends on the spatial distribution of the temperature rise with highest sensitivity from tropical Atlantic, Central America, and the Indian Ocean. Statistically downscaling 21st century warming patterns from six climate models results in a twofold to sevenfold increase in the frequency of Katrina magnitude events for a 1 °C rise in global temperature (using BNU-ESM, BCC-CSM-1.1, CanESM2, HadGEM2-ES, INM-CM4, and NorESM1-M).

  • climate change
  • hazard
  • flood

Footnotes

  • ↵1To whom correspondence may be addressed. E-mail: ag{at}glaciology.net or john.moore.bnu{at}gmail.com.
  • Author contributions: A.G. and J.C.M. designed research; A.G. performed research; A.G. analyzed data; and A.G., J.C.M., and S.J. wrote the paper.

  • The authors declare no conflict of interest.

  • This article is a PNAS Direct Submission.

  • This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1209980110/-/DCSupplemental.

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Projected Atlantic hurricane surge threat
Aslak Grinsted, John C. Moore, Svetlana Jevrejeva
Proceedings of the National Academy of Sciences Apr 2013, 110 (14) 5369-5373; DOI: 10.1073/pnas.1209980110

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Projected Atlantic hurricane surge threat
Aslak Grinsted, John C. Moore, Svetlana Jevrejeva
Proceedings of the National Academy of Sciences Apr 2013, 110 (14) 5369-5373; DOI: 10.1073/pnas.1209980110
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Proceedings of the National Academy of Sciences: 110 (14)
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