DOI: 10.1002/2017MS001074
Scopus记录号: 2-s2.0-85042361370
论文题名: On the Utility (or Futility) of Using Stable Water Isotopes to Constrain the Bulk Properties of Tropical Convection
作者: Duan S ; Q ; , Wright J ; S ; , Romps D ; M
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2018
卷: 10, 期: 2 起始页码: 516
结束页码: 529
语种: 英语
英文关键词: Air entrainment
; Analytical models
; Atmospheric humidity
; Earth (planet)
; Efficiency
; Heat convection
; Isotopes
; Uncertainty analysis
; Atmospheric water vapor
; Measurement uncertainty
; Precipitation efficiency
; Single-column model
; Stable water isotopes
; Structural uncertainty
; Tropical convection
; Water isotope
; Tropics
英文摘要: Atmospheric water-vapor isotopes have been proposed as a potentially powerful constraint on convection, which plays a critical role in Earth's present and future climate. It is shown here, however, that the mean tropical profile of HDO in the free troposphere does not usefully constrain the mean convective entrainment rate or precipitation efficiency. This is demonstrated using a single-column analytical model of atmospheric water isotopes. The model has three parameters: the entrainment rate, the precipitation efficiency, and the distance that evaporating condensates fall. At a given relative humidity, the possible range of HDO is small: its range is comparable to both the measurement uncertainty in the mean tropical profile and the structural uncertainty of a single-column model. Therefore, the mean tropical HDO profile is unlikely to add information about convective processes in a bulk-plume framework that cannot already be learned from relative humidity alone. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75657
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: Department of Earth System Science, Tsinghua University, Beijing, China; Department of Earth and Planetary Science, University of California, Berkeley, CA, United States; Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Recommended Citation:
Duan S,Q,, Wright J,et al. On the Utility (or Futility) of Using Stable Water Isotopes to Constrain the Bulk Properties of Tropical Convection[J]. Journal of Advances in Modeling Earth Systems,2018-01-01,10(2)