| DOI: | 10.1002/2015GL066878
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| 论文题名: | Higher surface Bowen ratios ineffective at increasing updraft intensity |
| 作者: | Hansen Z.R.; Back L.E.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8339
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| EISSN: | 1944-8070
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| 出版年: | 2015
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| 卷: | 42, 期:23 | | 起始页码: | 10503
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| 结束页码: | 10511
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| 语种: | 英语
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| 英文关键词: | cloud-resolving models
; deep convection
; lightning
; tropical meteorology
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| Scopus关键词: | Boundary layers
; Lightning
; Boundary layer depth
; Cloud resolving model
; Convective intensity
; Deep convection
; Entrainment rates
; Initial conditions
; Radiative-convective equilibrium
; Tropical meteorology
; Atmospheric boundary layer
; atmospheric convection
; atmospheric modeling
; boundary layer
; Bowen ratio
; cloud radiative forcing
; lightning
; tropical meteorology
; updraft
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| 英文摘要: | The sensitivity of various metrics of convective intensity to changes in boundary layer depth via changes in the surface Bowen ratio is explored with radiative-convective equilibrium (RCE) and initial condition simulations in the System for Atmospheric Modeling, a cloud-resolving model. In the RCE simulations, high-percentile updrafts showed little change in response to changes in the surface Bowen ratio. Initial condition simulations showed low surface Bowen ratios having stronger updrafts than high surface Bowen ratios. A parcel model was used to explore whether RCE results could be explained with an entrainment parameter independent of boundary layer depth. It was found that for every set of simulations in RCE, entrainment rates independent of boundary layer depth could explain the lack of change in updraft velocities with boundary layer depth. Given the indifference of high-percentile updraft velocities in our simulations to changes in the surface Bowen ratio, we conclude that convective intensity as measured by this quantity in the cloud-resolving model is not sensitive to this forcing. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953639236&doi=10.1002%2f2015GL066878&partnerID=40&md5=76279b609f84a043ebf70248fadc9f7e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7955
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States
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| Recommended Citation: | |
Hansen Z.R.,Back L.E.. Higher surface Bowen ratios ineffective at increasing updraft intensity[J]. Geophysical Research Letters,2015-01-01,42(23).
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