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Large‑scale control on the frequency of tropical cyclones and seeds: a consistent relationship across a hierarchy of global atmospheric models

Author(s): Hsieh, Tsung-Lin; Vecchi, Gabriel A; Yang, Wenchang; Held, Isaac M; Garner, Stephen T

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dc.contributor.authorHsieh, Tsung-Lin-
dc.contributor.authorVecchi, Gabriel A-
dc.contributor.authorYang, Wenchang-
dc.contributor.authorHeld, Isaac M-
dc.contributor.authorGarner, Stephen T-
dc.date.accessioned2022-01-25T14:50:52Z-
dc.date.available2022-01-25T14:50:52Z-
dc.date.issued2020-09-12en_US
dc.identifier.citationHsieh, Tsung-Lin, Gabriel A. Vecchi, Wenchang Yang, Isaac M. Held, and Stephen T. Garner. "Large-scale control on the frequency of tropical cyclones and seeds: a consistent relationship across a hierarchy of global atmospheric models." Climate Dynamics 55 (2020): 3177-3196. doi:10.1007/s00382-020-05446-5.en_US
dc.identifier.issn0930-7575-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1db7vp6h-
dc.description.abstractA diagnostic framework is developed to explain the response of tropical cyclones (TCs) to climate in high-resolution global atmospheric models having different complexity of boundary conditions. The framework uses vortex dynamics to identify the large-scale control on the evolution of TC precursors—first non-rotating convective clusters and then weakly rotating seeds. In experiments with perturbed sea surface temperature (SST) and CO2 concentration from the historical values, the response of TCs follows the response of seeds. The distribution of seeds is explained by the distribution of the non-rotating convective clusters multiplied by a probability that they transition to seeds. The distribution of convective clusters is constrained by the large-scale vertical velocity and is verified in aquaplanet experiments with shifting Inter tropical Convergence Zones. The probability of transition to seeds is constrained by the large-scale vorticity via an analytical function, representing the relative importance between vortex stretching and vorticity advection, and is verified in aquaplanet experiments with uniform SST. The consistency between seed and TC responses breaks down substantially when the realistic SST is perturbed such that the spatial gradient is significantly enhanced or reduced. In such cases, the difference between the responses is explained by a change in the ventilation index, which influences the fraction of seeds that develop into TCs. The proposed TC-climate relationship serves as a framework to explain the diversity of TC projection across models and forcing scenarios.en_US
dc.format.extent3177 - 3196en_US
dc.language.isoen_USen_US
dc.relation.ispartofClimate Dynamicsen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleLarge‑scale control on the frequency of tropical cyclones and seeds: a consistent relationship across a hierarchy of global atmospheric modelsen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1007/s00382-020-05446-5-
dc.identifier.eissn1432-0894-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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