DOI: 10.1007/s00382-013-1964-9
Scopus记录号: 2-s2.0-84903394459
论文题名: Mixed-phase clouds cause climate model biases in Arctic wintertime temperature inversions
作者: Pithan F. ; Medeiros B. ; Mauritsen T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-01-02 起始页码: 289
结束页码: 303
语种: 英语
英文关键词: Arctic
; Boundary layer
; Temperature inversion
; Turbulence
英文摘要: Temperature inversions are a common feature of the Arctic wintertime boundary layer. They have important impacts on both radiative and turbulent heat fluxes and partly determine local climate-change feedbacks. Understanding the spread in inversion strength modelled by current global climate models is therefore an important step in better understanding Arctic climate and its present and future changes. Here, we show how the formation of Arctic air masses leads to the emergence of a cloudy and a clear state of the Arctic winter boundary layer. In the cloudy state, cloud liquid water is present, little to no surface radiative cooling occurs and inversions are elevated and relatively weak, whereas surface radiative cooling leads to strong surface-based temperature inversions in the clear state. Comparing model output to observations, we find that most climate models lack a realistic representation of the cloudy state. An idealised single-column model experiment of the formation of Arctic air reveals that this bias is linked to inadequate mixed-phase cloud microphysics, whereas turbulent and conductive heat fluxes control the strength of inversions within the clear state. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: DOE, U.S. Department of Energy
; NCAR, U.S. Department of Energy
; NSF, U.S. Department of Energy
; SC, U.S. Department of Energy
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54580
Appears in Collections: 过去全球变化的重建
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作者单位: Max-Planck-Institute for Meteorology, Bundesstrasse 53, 20146 Hamburg, Germany; International Max Planck Research School on Earth System Modelling, Hamburg, Germany; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Pithan F.,Medeiros B.,Mauritsen T.. Mixed-phase clouds cause climate model biases in Arctic wintertime temperature inversions[J]. Climate Dynamics,2014-01-01,43(2017-01-02)