DOI: 10.1175/JCLI-D-17-0269.1
Scopus记录号: 2-s2.0-85041965984
论文题名: Process-oriented diagnosis of tropical cyclones in high-resolution GCMs
作者: Kim D. ; Moon Y. ; Camargo S.J. ; Wing A.A. ; Sobel A.H. ; Murakami H. ; Vecchi G.A. ; Zhao M. ; Page E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 5 起始页码: 1685
结束页码: 1702
语种: 英语
英文关键词: Convective parameterization
; Diagnostics
; General circulation models
; Tropical cyclones
Scopus关键词: Atmospheric humidity
; Feedback
; Heat convection
; Hurricanes
; Latent heat
; Moisture
; Oceanography
; Plasma diagnostics
; Storms
; Surface waters
; Tropics
; Wind
; Convective parameterization
; Frequency distributions
; General circulation model
; Geophysical fluid dynamics laboratories
; High-resolution atmospheric models
; Sea surface temperature (SST)
; Surface latent heat fluxes
; Tropical cyclone
; Heat flux
; climate modeling
; computer simulation
; diabatic process
; general circulation model
; latent heat flux
; model test
; model validation
; numerical model
; parameterization
; relative humidity
; resolution
; sea surface temperature
; tropical cyclone
; weather forecasting
英文摘要: This study proposes a set of process-oriented diagnostics with the aim of understanding how model physics and numerics control the representation of tropical cyclones (TCs), especially their intensity distribution, in GCMs. Three simulations are made using two 50-km GCMs developed at NOAA's Geophysical Fluid Dynamics Laboratory. The two models are forced with the observed sea surface temperature [Atmospheric Model version 2.5 (AM2.5) and High Resolution Atmospheric Model (HiRAM)], and in the third simulation, the AM2.5 model is coupled to an ocean GCM [Forecast-Oriented Low Ocean Resolution (FLOR)]. The frequency distributions of maximum near-surface wind near TC centers show that HiRAM tends to develop stronger TCs than the other models do. Large-scale environmental parameters, such as potential intensity, do not explain the differences between HiRAM and the other models. It is found that HiRAM produces a greater amount of precipitation near the TC center, suggesting that associated greater diabatic heating enables TCs to become stronger in HiRAM. HiRAMalso shows a greater contrast in relative humidity and surface latent heat flux between the inner and outer regions of TCs. Various fields are composited on precipitation percentiles to reveal the essential character of the interaction among convection, moisture, and surface heat flux. Results show that the moisture sensitivity of convection is higher in HiRAM than in the other model simulations. HiRAM also exhibits a stronger feedback from surface latent heat flux to convection via near-surface wind speed in heavy rain-rate regimes. The results emphasize that the moisture-convection coupling and the surface heat flux feedback are critical processes that affect the intensity of TCs in GCMs. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111629
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; NOAA/Geophysical Fluid Dyanmics Laboratory, Princeton, NJ, United States; Princeton University, Princeton, NJ, United States
Recommended Citation:
Kim D.,Moon Y.,Camargo S.J.,et al. Process-oriented diagnosis of tropical cyclones in high-resolution GCMs[J]. Journal of Climate,2018-01-01,31(5)