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The moisture budget of tropical cyclones in HighResMIP models: large-scale environmental balance and sensitivity to horizontal resolution
dc.contributor.author | Vannière, Benoît |
dc.contributor.author | Roberts, Malcolm |
dc.contributor.author | Vidale, Pier Luigi |
dc.contributor.author | Hodges, Kevin |
dc.contributor.author | Demory, Marie-Estelle |
dc.contributor.author | Caron, Louis-Philippe |
dc.contributor.author | Scoccimarro, Enrico |
dc.contributor.author | Terray, Laurent |
dc.contributor.author | Senan, Retish |
dc.contributor.other | Barcelona Supercomputing Center |
dc.date.accessioned | 2020-09-16T10:40:09Z |
dc.date.available | 2020-09-16T10:40:09Z |
dc.date.issued | 2020-10-01 |
dc.identifier.citation | Vannière, B. [et al.]. The moisture budget of tropical cyclones in HighResMIP models: large-scale environmental balance and sensitivity to horizontal resolution. "Journal Of Climate", 1 Octubre 2020, vol. 33, núm. 19, p. 8457-8474. |
dc.identifier.issn | 0894-8755 |
dc.identifier.issn | 1520-0442 |
dc.identifier.uri | http://hdl.handle.net/2117/328791 |
dc.description.abstract | Previous studies have shown that the number, intensity, and structure of simulated tropical cyclones (TCs) in climate models get closer to the observations as the horizontal resolution is increased. However, the sensitivity of tropical cyclone precipitation and moisture budget to changes in resolution has received less attention. In this study, we use the five-model ensemble from project PRIMAVERA/HighResMIP to investigate the systematic changes of the water budget of tropical cyclones in a range of horizontal resolutions from 1° to 0.25°. Our results show that, despite a large change in the distribution of TC intensity with resolution, the distribution of precipitation per TC (i.e., averaged in a 5° radial cap) does not change significantly. This result is explained by the fact that low- and high-resolution models represent equally well the large-scale balance that characterizes the moisture budget of TCs, with the radius of the moisture source extending to ~15° from the center of the TC (i.e. well beyond the TC edge). The wind profile is found to converge in the low and high resolutions for radii > 5°, resulting in a moisture flux convergence into the TC of similar magnitude at low and high resolutions. In contrast to precipitation per TC, TC intensity does increase at higher resolution and this is explained by the larger surface latent heat flux near the center of the storm, which leads to an increase in equivalent potential temperature and warmer core anomalies, although this extra latent heat represents a negligible contribution to the overall moisture budget. We discuss the complication arising from the choice of the tracking algorithm when assessing the impact of model resolution. |
dc.description.sponsorship | This work has been funded by the European Union’s Horizon 2020 programme under Grant Agreement 641727. We thank three anonymous reviewers for their constructive remarks and suggestions. We thank Kevin Reed, Helen Dacre, Chris Holloway, Nick Klingaman, Jianfeng Gu, and Ralf Toumi for fruitful discussions and suggestions. |
dc.format.extent | 18 p. |
dc.language.iso | eng |
dc.publisher | American Meteorological Society |
dc.relation.uri | https://doi.org/10.1175/JCLI-D-19-0999.s1. |
dc.subject | Àrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida::Climatologia i meteorologia |
dc.subject.lcsh | Moisture |
dc.subject.lcsh | Cyclones--Tropics |
dc.subject.lcsh | Data sets |
dc.subject.lcsh | Computer simulation |
dc.subject.lcsh | Rain and rainfall--Mathematical models |
dc.subject.other | Tropical cyclones |
dc.subject.other | Moisture/moisture budget |
dc.subject.other | General circulation models |
dc.subject.other | Model evaluation/performance |
dc.title | The moisture budget of tropical cyclones in HighResMIP models: large-scale environmental balance and sensitivity to horizontal resolution |
dc.type | Article |
dc.subject.lemac | Ciclons |
dc.subject.lemac | Simulació per ordinador |
dc.identifier.doi | 10.1175/JCLI-D-19-0999.1. |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://journals.ametsoc.org/jcli/article/33/19/8457/354274/The-Moisture-Budget-of-Tropical-Cyclones-in |
dc.rights.access | Open Access |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/H2020/641727/EU/PRocess-based climate sIMulation: AdVances in high resolution modelling and European climate Risk Assessment/PRIMAVERA |
local.citation.publicationName | Journal Of Climate |
local.citation.volume | 33 |
local.citation.number | 19 |
local.citation.startingPage | 8457 |
local.citation.endingPage | 8474 |
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