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Huang, Huanping, Collins, William D. 
ORCID: https://orcid.org/0000-0002-4463-9848, Patricola, Christina M., Ruprich-Robert, Yohan, Ullrich, Paul A. and Baker, Alexander J.
(2023)
Contrasting Responses of Atlantic and Pacific Tropical Cyclone Activity to Atlantic Multidecadal Variability.
Geophysical Research Letters, 50 (10).
ISSN 0094-8276
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Abstract
This research assesses the influences of Atlantic Multidecadal Variability (AMV) on global tropical cyclones (TCs) using two large ensembles of idealized global climate model simulations with opposite signs of AMV forcings superimposed (i.e., AMV+ and AMV–). We first detect TCs and then compare TC activity by basin in the two AMV experiments. We find contrasting responses of Atlantic and Pacific TC frequency to the AMV anomalies. Compared to AMV–, AMV+ significantly increases TC frequency in the North Atlantic, including those making landfalls. The increase is explained by warmer sea surface temperature, higher relative humidity, increased relative vorticity, and weaker vertical wind shear under AMV+. By contrast, AMV+ decreases TC occurrence over the western North Pacific and South Pacific, which is tied to stronger vertical wind shear and lower relative humidity. The opposite responses of TC activity to AMV+ are attributed to strengthened Walker Circulation between the Atlantic and Pacific.
| Item Type: | Article |
|---|---|
| Additional Information: | Data Availability Statement: The DCPP climate model outputs at daily and monthly timescales can be accessed through the Earth System Grid Federation nodes (https://esgf-index1.ceda.ac.uk/search/cmip6-ceda). Subdaily outputs from the EC-Earth3P-HR, EC-Earth3P, and CNRM-CM6-1 simulations can be accessed at the UK Centre for Environmental Data Analysis's JASMIN platform (https://www.ceda.ac.uk/services/jasmin/). The tropical cyclone tracks derived from the EC-Earth3P-HR, EC-Earth3P, and CNRM-CM6-1 simulations are archived at the NERSC portal (https://portal.nersc.gov/archive/home/projects/cascade/www/TC_tracks_AMV). |
| Uncontrolled Keywords: | geophysics,general earth and planetary sciences,sdg 13 - climate action ,/dk/atira/pure/subjectarea/asjc/1900/1908 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 20 Jul 2026 15:09 |
| Last Modified: | 20 Jul 2026 15:20 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/103924 |
| DOI: | 10.1029/2023GL102959 |
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