DOI: 10.1175/JCLI-D-12-00033.1
Scopus记录号: 2-s2.0-84871751273
论文题名: Variations in tropical cyclone genesis factors in simulations of the Holocene epoch
作者: Korty R.L. ; Camargo S.J. ; Galewsky J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 23 起始页码: 8196
结束页码: 8211
语种: 英语
Scopus关键词: Climate variability
; Earth's orbit
; Holocenes
; Incubation periods
; Northern Hemispheres
; Orbital variations
; Paleoclimates
; Pre-industrial
; Seasonal cycle
; Seasonal distributions
; Southern Hemisphere
; Substantial variations
; Surface temperatures
; Temperature response
; Thermodynamic factors
; Transient simulation
; Transient temperature response
; Tropical cyclone
; Tropical variability
; Volcanic eruptions
; Atmospheric temperature
; Climate models
; Climatology
; Solar radiation
; Sun
; Thermodynamic properties
; Troposphere
; Hurricanes
; boundary layer
; climate modeling
; climate variation
; cyclogenesis
; entropy
; Holocene
; Northern Hemisphere
; paleoclimate
; solar radiation
; Southern Hemisphere
; spatial variation
; thermodynamics
; top of atmosphere
; tropical cyclone
; tropopause
; troposphere
; volcanism
英文摘要: The thermodynamic factors related to tropical cyclone genesis are examined in several simulations of the middle part of the Holocene epoch when the precession of Earth's orbit altered the seasonal distribution of solar radiation and inone transient simulation of the millennium preceding the industrial era. The thermodynamic properties most crucial for genesis display a broad stability across both periods, although both orbital variations during the mid-Holocene (MH) 6000years ago (6ka) and volcanic eruptions in the transient simulation have detectable effects. It is shown that the distribution of top-of-the-atmosphere radiation 6ka altered the Northern Hemisphere seasonal cycle of the potential intensity of tropical cyclones in addition to slightly increasing the difference between middle tropospheric and boundary layer entropy, a parameter thathas been related to the incubation period required for genesis. The Southern Hemisphere, which receivesmore solar radiation during its storm season today than it did 6ka, displays slightly more favorable thermodynamic properties during theMHthan in the preindustrial era control. Surface temperatures over the ocean in both hemispheres respond to radiation anomalies more slowly than those in upper levels, altering the thermal stability. Volcanism produces a sharp but transient temperature response in the last-millennium simulation that strongly reduces potential intensity during the seasons immediately following a major eruption. Here, too, the differentialvertical temperature response is key: temperatures in the lower and middle troposphere cool, while those nearthe tropopause rise. Aside from these deviations, there is no substantial variation in thermodynamic properties over the 1000-yr simulation. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52121
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, Texas A and M University, College Station, TX, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Earth Sciences, University of New Mexico, Albuquerque, NM, Mexico
Recommended Citation:
Korty R.L.,Camargo S.J.,Galewsky J.. Variations in tropical cyclone genesis factors in simulations of the Holocene epoch[J]. Journal of Climate,2012-01-01,25(23)