DOI: 10.1175/JCLI-D-16-0093.1
Scopus记录号: 2-s2.0-85014045481
论文题名: Different climatological characteristics, inner-core structures, and intensification processes of simulated intense tropical cyclones between 20-km global and 5-km regional models
作者: Kanada S. ; Wada A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 5 起始页码: 1583
结束页码: 1603
语种: 英语
Scopus关键词: Earth atmosphere
; Hurricanes
; Precipitation (meteorology)
; Atmospheric general circulation models
; Maximum intensities
; Nonhydrostatic model
; Rapid intensification
; Regional model
; Similar numbers
; Tropical cyclone
; Western North Pacific
; Storms
; climate modeling
; climatology
; general circulation model
; precipitation (climatology)
; tropical cyclone
; warming
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Climatological characteristics of simulated intense tropical cyclones (TCs) in the western North Pacific were explored with a 20-km-mesh atmospheric general circulation model (AGCM20) and a 5-km-mesh regional atmospheric nonhydrostatic model (ANHM5). From the AGCM20 climate runs, 34 intense TCs with a minimum central pressure (MCP) less than or equal to 900 hPa were sampled. Downscaling experiments were conducted with the ANHM5 for each intense TC simulated by the AGCM20. Only 23 developed into TCs withMCP#900 hPa. Most of the best-track TCs with anMCP#900 hPa underwent rapid intensification (RI) and attained maximum intensities south of 258N. The AGCM20 simulated a similar number of intense TCs as the best-track datasets. However, the intense AGCM20 TCs tended to intensify longer and more gradually; only half of them underwent RI. The prolonged gradual intensification resulted in significant northward shifts of the location of maximum intensity compared with the location derived from two best-track datasets. The inner-core structure of AGCM20 TCs exhibited weak and shallow eyewall updrafts with maxima below an altitude of 6 km, while downscaling experiments revealed that most of the intenseANHM5TCs underwent RI with deep and intense eyewall updrafts and attained their maximumintensity at lower latitudes. The altitudes of updraft maxima simulated by the AGCM20 descended rapidly during the phase of greatest intensification as midlevel warming markedly developed. The change in major processes responsible for precipitation in AGCM20 TCs before and after maximum intensification suggests close relationships between the large-scale cloud scheme and midlevel warming and prolonged gradual intensification. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49895
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi, Japan; Meteorological Research Institute, Japan Metorological Agency, Tsukuba, Ibaraki, Japan
Recommended Citation:
Kanada S.,Wada A.. Different climatological characteristics, inner-core structures, and intensification processes of simulated intense tropical cyclones between 20-km global and 5-km regional models[J]. Journal of Climate,2017-01-01,30(5)