DOI: 10.1002/2017MS000977
Scopus记录号: 2-s2.0-85034774113
论文题名: Axisymmetric Initialization of the Atmosphere and Ocean for Idealized Coupled Hurricane Simulations
作者: Aksoy A ; , Zhang J ; A ; , Klotz B ; W ; , Uhlhorn E ; W ; , Cione J ; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 7 起始页码: 2672
结束页码: 2695
语种: 英语
英文关键词: Fighter aircraft
; Oceanography
; Reconnaissance aircraft
; Regression analysis
; Storms
; Surface waters
; Vortex flow
; Weather forecasting
; Atmospheric vortices
; Composite data sets
; Coupled simulation
; Idealized simulations
; Initialization
; Ocean atmosphere
; Sea surface temperature (SST)
; Weather research and forecasting
; Hurricanes
; air-sea interaction
; data set
; forecasting method
; hurricane
; perturbation
; regression analysis
; sea surface temperature
; steady-state equilibrium
; thermodynamics
; upper ocean
; vortex
; Atlantic Ocean
; Caribbean Sea
英文摘要: A new vortex-scale initialization scheme is presented for idealized coupled hurricane simulations. The atmospheric scheme involves construction of azimuthally averaged kinematic and thermodynamic initial fields based on historical composite data sets from hurricane reconnaissance aircraft. For ocean initialization, a statistical scheme is proposed to construct regression models among atmospheric and ocean fields in the hurricane inner core. For the numerical model, the Hurricane Weather Research and Forecasting (HWRF) model coupled with a one-dimensional, diffusive ocean model is used with modifications to initialize with the observation-based vortex and to ensure that the storm environment remains approximately steady. The primary goal in these simulations is to obtain steady state hurricanes of category-1 intensity with characteristics typically observed during the hurricane season of the western Atlantic and Caribbean Sea regions. It is demonstrated that this is successfully achieved in the simulations. In an azimuthally averaged sense, regression models are found to capture about 70% of total variance for sea-surface temperature cooling and up to 55% of total variance for mixed-layer depth perturbation in the hurricane inner core. Furthermore, within the inner core of a hurricane vortex, it is found that storm speed contributes most to upper ocean perturbations, whereas characteristics of the atmospheric vortex contribute very little. The importance of storm speed in controlling upper ocean perturbations is strongest near the storm center, diminishing gradually toward no measurable impact beyond the immediate inner core. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75698
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: Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States; Hurricane Research Division, NOAA/AOML, Miami, FL, United States; AIR Worldwide, Boston, MA, United States; Physical Sciences Division, NOAA/ESRL, Boulder, CO, United States
Recommended Citation:
Aksoy A,, Zhang J,A,et al. Axisymmetric Initialization of the Atmosphere and Ocean for Idealized Coupled Hurricane Simulations[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(7)