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The Response of Tropical Cyclone Statistics to an Increase in CO2 with Fixed Sea Surface Temperatures

Journal Article · · Journal of Climate
 [1];  [2]
  1. National Oceanic and Atmospheric Administration (NOAA), Princeton, NJ (United States)
  2. National Oceanic and Atmospheric Administration (NOAA), Princeton, NJ (United States); University Corporation for Atmospheric Research, Boulder, CO (United States)
The effects on tropical cyclone statistics of doubling CO2, with fixed sea surface temperatures (SSTs), are compared to the effects of a 2-K increase in SST, with fixed CO2, using a 50-km resolution global atmospheric model. Confirming earlier results of Yoshimura and Sugi, a significant fraction of the reduction in globally averaged tropical storm frequency seen in simulations in which both SST and CO2 are increased can be thought of as the effect of the CO2 increase with fixed SSTs. Globally, the model produces a decrease in tropical cyclone frequency of about 10% due to doubling of CO2 and an additional 10% for a 2-K increase in SST, resulting in roughly a 20% reduction when both effects are present. The relative contribution of the CO2 effect to the total reduction is larger in the Northern than in the Southern Hemisphere. The average intensity of storms increases in the model with increasing SST, but intensity remains roughly unchanged, or decreases slightly, with the increase in CO2 alone. As a result, when considering the frequency of more intense cyclones, the intensity increase tends to compensate for the reduced total cyclone numbers for the SST increase in isolation, but not for the CO2 increase in isolation. Changes in genesis in these experiments roughly follow changes in mean vertical motion, reflecting changes in convective mass fluxes. Discussion of one possible perspective on how changes in the convective mass flux might alter genesis rates is provided.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); UT-Battelle LLC/ORNL, Oak Ridge, TN (Unted States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1564909
Journal Information:
Journal of Climate, Journal Name: Journal of Climate Journal Issue: 20 Vol. 24; ISSN 0894-8755
Publisher:
American Meteorological SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (26)

Characteristics of tropical cyclones in high‐resolution models in the present climate journal December 2014
Interplay of drought and tropical cyclone activity in SE U.S. gross primary productivity: Impacts of TC Activity on SE U.S. GPP journal June 2016
Western North Pacific Tropical Cyclone Model Tracks in Present and Future Climates: TC TRACKS IN PRESENT AND FUTURE CLIMATES journal September 2017
The sensitivity of hurricane frequency to ITCZ changes and radiatively forced warming in aquaplanet simulations: SENSITIVITY OF AQUAPLANET HURRICANES journal August 2013
Tropical cyclones and climate change: Tropical cyclones and climate change
  • Walsh, Kevin J. E.; McBride, John L.; Klotzbach, Philip J.
  • Wiley Interdisciplinary Reviews: Climate Change, Vol. 7, Issue 1 https://doi.org/10.1002/wcc.371
journal November 2015
Tropical cyclones in climate models: Tropical cyclones in climate models journal November 2015
Mechanism of the Indian Ocean Tropical Cyclone Frequency Changes due to Global Warming book January 2014
Future changes in tropical cyclone activity projected by multi-physics and multi-SST ensemble experiments using the 60-km-mesh MRI-AGCM journal October 2011
Fine resolution simulations of the effect of climate change on tropical cyclones in the South Pacific journal February 2015
Tropical cyclogenesis in warm climates simulated by a cloud-system resolving model journal March 2018
Tropical cyclone sensitivities to CO2 doubling: roles of atmospheric resolution, synoptic variability and background climate changes journal August 2019
Future changes in Atlantic hurricanes with the rotated-stretched ARPEGE-Climat at very high resolution journal November 2019
Projected changes in ENSO-driven regional tropical cyclone tracks journal January 2020
Rapid Adjustments of Cloud and Hydrological Cycle to Increasing CO2: a Review journal March 2015
The Climatological Effect of Saharan Dust on Global Tropical Cyclones in a Fully Coupled GCM journal May 2018
Improving AGCM Hurricane Structure With Two-Way Nesting journal January 2019
Orbitally Induced Variation of Tropical Cyclone Genesis Potential Over the Western North Pacific During the Mid‐Piacenzian Warm Period: A Modeling Perspective journal June 2019
Understand the Direct Effect of CO 2 Increase on Tropical Circulation and TC Activity: Land Surface Warming Versus Direct Radiative Forcing journal June 2019
The Response of Tropical Organized Convection to El Niño Warming journal August 2019
Tropical cyclone rainfall area controlled by relative sea surface temperature journal March 2015
Marine cloud brightening: regional applications
  • Latham, John; Gadian, Alan; Fournier, Jim
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 372, Issue 2031 https://doi.org/10.1098/rsta.2014.0053
journal December 2014
Tropical cyclones in the GISS ModelE2 journal July 2016
Tropical cyclones in the GISS ModelE2 text January 2016
Western North Pacific Tropical Cyclone Model Tracks in Present and Future Climates text January 2017
Tropical cyclones and climate change text January 2016
Tropical cyclones in climate models text January 2016

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