气候变化领域集成服务门户(CCPortal): The moisture budget of tropical cyclones in highresmip models: Large-scale environmental balance and sensitivity to horizontal resolution

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DOI	10.1175/JCLI-D-19-0999.1
	The moisture budget of tropical cyclones in highresmip models: Large-scale environmental balance and sensitivity to horizontal resolution
	Vannière B.; Roberts M.; Vidale P.L.; Hodges K.; Demory M.-E.; Caron L.-P.; Scoccimarro E.; Terray L.; Senan R.
发表日期	2020
ISSN	0894-8755
起始页码	8457
结束页码	8474
卷号	33 期号:19
英文摘要	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 18 to 0.258. 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 58 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;158 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 . 58, 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. Ó 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Budget control; Climate models; Heat flux; Latent heat; Moisture; Storms; Tropics; American meteorological societies; Copyright informations; Environmental balance; High-resolution models; Horizontal resolution; Moisture flux convergences; Potential temperature; Surface latent heat fluxes; Hurricanes; algorithm; atmospheric moisture; climate modeling; convergence; precipitation (climatology); resolution; sensitivity analysis; tropical cyclone; water budget; wind profile; Tabebuia donnell-smithii
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171084
作者单位	National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Met Office Hadley Center, Exeter, United Kingdom; Institute for Atmospheric and Climate Science, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland; Barcelona Supercomputing Center, Barcelona, Spain; Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy; Climat, Environnement, Couplages, Incertitudes, Université de Toulouse, CNRS, Cerfacs, Toulouse, France; European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
推荐引用方式 GB/T 7714	Vannière B.,Roberts M.,Vidale P.L.,et al. The moisture budget of tropical cyclones in highresmip models: Large-scale environmental balance and sensitivity to horizontal resolution[J],2020,33(19).
APA	Vannière B..,Roberts M..,Vidale P.L..,Hodges K..,Demory M.-E..,...&Senan R..(2020).The moisture budget of tropical cyclones in highresmip models: Large-scale environmental balance and sensitivity to horizontal resolution.Journal of Climate,33(19).
MLA	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 33.19(2020).