DOI: 10.1175/JCLI-D-17-0231.1
Scopus记录号: 2-s2.0-85041668813
论文题名: On the summertime planetary boundary layer with different thermodynamic stability in China: A radiosonde perspective
作者: Zhang W. ; Guo J. ; Miao Y. ; Liu H. ; Song Y. ; Fang Z. ; He J. ; Lou M. ; Yan Y. ; Li Y. ; Zhai P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 4 起始页码: 1451
结束页码: 1465
语种: 英语
英文关键词: Atmospheric
; Boundary layer
; Climatology
; Cloud cover
; Profilers
Scopus关键词: Atmospheric humidity
; Atmospheric thermodynamics
; Atmospherics
; Boundary layer flow
; Boundary layers
; Climatology
; Radiosondes
; Thermodynamic stability
; Thermodynamics
; Cloud cover
; Cloudy conditions
; Convective boundary layers
; Near surface air temperature
; Neutral boundary layer
; Planetary boundary layers
; Profilers
; Stable boundary layer
; Atmospheric boundary layer
; boundary layer
; climatology
; cloud cover
; profiler
; radiosonde
; summer
; thermodynamics
; China
英文摘要: Strongly influenced by thermodynamic stability, the planetary boundary layer (PBL) is key to the exchange of heat, momentum, and moisture between the ground surface and free troposphere. The PBL with different thermodynamic stability across the whole of China, however, is not yet well understood. In this study, the occurrence frequency and spatial distribution of the convective boundary layer (CBL), neutral boundary layer (NBL), and stable boundary layer (SBL) were systematically investigated, based on intensive summertime soundings launched at 1400 Beijing time (BJT) throughout China's radiosonde network (CRN) for the period 2012 to 2016. Overall, the occurrences of CBL, NBL, and SBL account for 70%, 26%, and 4%, respectively, suggesting that CBL dominates in summer throughout China. In terms of the spatial pattern of PBL height, a prominent north-south gradient can be found with higher PBL height in northwest China. In addition, the PBL heights of CBL and NBL were found to be positively (negatively) associated with near-surface air temperature (humidity), whereas no apparent relationship was found for SBL. Furthermore, clouds tend to reduce the occurrence frequency, irrespective of PBL type. Roughly 70% of SBL cases occur under overcast conditions, much higher than those for NBL and CBL, indicating that clouds govern to some extent the occurrence of SBL. In contrast, except for the discernible changes in PBL height under overcast conditions relative to those under clear-sky conditions, the changes in PBL height under partly cloudy conditions are no more than 170 m for both NBL and CBL types. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111698
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; State Key Joint Laboratory of Environmental Simulation and Pollution Control, Department of Environmental Science, Peking University, Beijing, China; Public Meteorological Service Center, China Meteorological Administration, Beijing, China
Recommended Citation:
Zhang W.,Guo J.,Miao Y.,et al. On the summertime planetary boundary layer with different thermodynamic stability in China: A radiosonde perspective[J]. Journal of Climate,2018-01-01,31(4)