DOI: 10.1175/JCLI-D-12-00510.1
Scopus记录号: 2-s2.0-84881236135
论文题名: The development and assessment of a model-, grid-, and basin-independent tropical cyclone detection scheme
作者: Tory K.J. ; Chand S.S. ; Dare R.A. ; McBride J.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 15 起始页码: 5493
结束页码: 5507
语种: 英语
Scopus关键词: Detection scheme
; Detector performance
; Lower troposphere
; Midtroposphere
; Shear environments
; Specific humidity
; Tropical cyclone
; Vertical wind shear
; Climate models
; Hurricanes
; Detectors
; climate modeling
; detection method
; hurricane
; numerical model
; tropical cyclone
; troposphere
; vorticity
英文摘要: A novel approach to tropical cyclone (TC) detection in coarse-resolution numerical model data is in-troduced and assessed. This approach differs from traditional detectors in two main ways. First, it was de-veloped and tuned using 20yr of ECMWF Interim Re-Analysis (ERA-Interim) data, rather than using climate model data. This ensures that the detector is independent of any climate models to which it will later be applied. Second, only relatively large-scale parameters resolvable in climate models are included, in order to minimize any grid-resolution dependence on parameter thresholds. This approach is taken in an attempt to construct a unified TC detection procedure applicable to all climate models without the need for any further tuning or adjustment. Unlike traditional detectors that seek to identify TCs directly, the authors' method seeks to identify con-ditions favorable for TC formation. Favorable TC formation regions at the center of closed circulations in the lower troposphere to the midtroposphere are identified using a low-deformation vorticity parameter. Additional relative and specific humidity thresholds are applied to ensure the thermodynamic environment is favorable, and a vertical wind shear threshold is applied to eliminate storms in a destructive shear environment. A further requirement is that thresholds for all parameters must be satisfied for at least 48h before a TC is deemed to have developed. A thorough assessment of the detector performance is provided. It is demonstrated that the method re-produces realistic TC genesis frequency and spatial distributions in the ERA-Interim data. Application of the detector to four climate models is presented in a companion paper. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51725
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Australian Weather and Climate Research, Bureau of Meteorology, Melbourne, VIC, Australia
Recommended Citation:
Tory K.J.,Chand S.S.,Dare R.A.,et al. The development and assessment of a model-, grid-, and basin-independent tropical cyclone detection scheme[J]. Journal of Climate,2013-01-01,26(15)