Development of the Convective Boundary Layer Capping with a Thick Neutral Layer in Badanjilin： Observations and Simulations

In this study, the development of a convective boundary layer （CBL） in the Badaujilin region was investigated by comparing the observation data of two cases. A deep neutral layer capped a CBL that occurred on 30 August 2009. This case was divided into five sublayers from the surface to higher atmosp...

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Bibliographic Details
Published inAdvances in atmospheric sciences Vol. 29; no. 1; pp. 177 - 192
Main Author 韩博 吕世华 奥银焕
Format Journal Article
LanguageEnglish
Published Heidelberg SP Science Press 2012
Springer Nature B.V
Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320, Donggang West Road, Lanzhou 730000
Subjects
Atmospheric boundary layer
Atmospheric circulation
Atmospheric research
Atmospheric Sciences
Atmospherics
Boundary layer
Boundary layers
Capping
Correlation
Earth and Environmental Science
Earth Sciences
Elevation
Geophysics/Geodesy
Large eddy simulation
Marine
Mesoscale convective complexes
Meteorology
Simulation
Surface layer
中性层
大涡模拟
天气背景
对流边界层
巴丹吉林
覆盖层
观测数据
边界带
USA
large-eddy simulation
large-scale circulation
convective boundary layer
neutral layer
Online AccessGet full text
ISSN0256-1530
1861-9533
DOI10.1007/s00376-011-0207-4

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Summary:In this study, the development of a convective boundary layer （CBL） in the Badaujilin region was investigated by comparing the observation data of two cases. A deep neutral layer capped a CBL that occurred on 30 August 2009. This case was divided into five sublayers from the surface to higher atmospheric elevations： surface layer, mixed layer, inversion layer, neutral layer, and sub-inversion layer. The development process of the CBL was divided into three stages： S1, S2, and S3. This case was quite different from the development of the three-layer CBL observed on 31 August 2009 because the mixed layer of the five-layer CBL （CBL5） eroded the neutral layer during S2. The specific initial structure of the CBL5 was correlated to the synoptic background of atmosphere during nighttime. The three-stage development process of the CBL5 was confirmed by six simulations using National Center for Atmospheric Research （USA） large-eddy simulation （NCAR-LES）, and some of its characteristics are presented in detail.
Bibliography:In this study, the development of a convective boundary layer （CBL） in the Badaujilin region was investigated by comparing the observation data of two cases. A deep neutral layer capped a CBL that occurred on 30 August 2009. This case was divided into five sublayers from the surface to higher atmospheric elevations： surface layer, mixed layer, inversion layer, neutral layer, and sub-inversion layer. The development process of the CBL was divided into three stages： S1, S2, and S3. This case was quite different from the development of the three-layer CBL observed on 31 August 2009 because the mixed layer of the five-layer CBL （CBL5） eroded the neutral layer during S2. The specific initial structure of the CBL5 was correlated to the synoptic background of atmosphere during nighttime. The three-stage development process of the CBL5 was confirmed by six simulations using National Center for Atmospheric Research （USA） large-eddy simulation （NCAR-LES）, and some of its characteristics are presented in detail.
HAN Bo, LU Shihua, AO Yinhuan Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320, Donggang West Road, Lanzhou 730000
convective boundary layer, neutral layer, large-scale circulation, large-eddy simulation
11-1925/O4
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ISSN:0256-1530
1861-9533
DOI:10.1007/s00376-011-0207-4