DOI: 10.1002/2014MS000352
Scopus记录号: 2-s2.0-84922816054
论文题名: A multidecadal simulation of Atlantic tropical cyclones using a variable-resolution global atmospheric general circulation model
作者: Zarzycki C ; M ; , Jablonowski C
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 6, 期: 3 起始页码: 805
结束页码: 828
语种: 英语
英文关键词: Atmospheric pressure
; Climatology
; Earth atmosphere
; Hurricanes
; Tropics
; Atmospheric general circulation models
; Community atmosphere model
; General circulation model
; Horizontal resolution
; Multidecadal simulations
; National center for atmospheric researches
; Tropical cyclone
; Variable resolution
; Storms
; algorithm
; atmospheric modeling
; circulation modeling
; El Nino-Southern Oscillation
; general circulation model
; spatial distribution
; spatial resolution
; synoptic meteorology
; tropical cyclone
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Using a variable-resolution option within the National Center for Atmospheric Research/Department of Energy Community Atmosphere Model (CAM) Spectral Element (SE) global model, a refined nest at 0.25° (28 km) horizontal resolution located over the North Atlantic is embedded within a global 1° (111 km) grid. The grid is designed such that fine grid cells are located where tropical cyclones (TCs) are observed to occur during the Atlantic TC season (June-November). Two simulations are compared, one with refinement and one control case with no refinement (globally uniform 1° grid). Both simulations are integrated for 23 years using Atmospheric Model Intercomparison Protocols. TCs are tracked using an objective detection algorithm. The variable-resolution simulation produces significantly more TCs than the unrefined simulation. Storms that do form in the refined nest are much more intense, with multiple storms strengthening to Saffir-Simpson category 3 intensity or higher. Both count and spatial distribution of TC genesis and tracks in the variable-resolution simulation are well matched to observations and represent significant improvements over the unrefined simulation. Some degree of interannual skill is noted, with the variable-resolution grid able to reproduce the observed connection between Atlantic TCs and the El Niño-Southern Oscillation (ENSO). It is shown that Genesis Potential Index (GPI) is well matched between the refined and unrefined simulations, implying that the introduction of variable-resolution does not affect the synoptic environment. Potential "upscale" effects are noted in the variable-resolution simulation, suggesting stronger TCs in refined nests may play a role in meridional transport of momentum, heat, and moisture. © 2014. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76017
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI, United States
Recommended Citation:
Zarzycki C,M,, Jablonowski C. A multidecadal simulation of Atlantic tropical cyclones using a variable-resolution global atmospheric general circulation model[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,6(3)