DOI: 10.1002/jgrd.50710
论文题名: Exploring a geophysical process-based attribution technique for the determination of the atmospheric boundary layer depth using aerosol lidar and near-surface meteorological measurements
作者: Pal S. ; Haeffelin M. ; Batchvarova E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9277
结束页码: 9295
语种: 英语
Scopus关键词: Aerosols
; Atmospheric boundary layer
; Backscattering
; Boundary layer flow
; Geophysics
; Atmospheric boundary layer depths
; Backscatter signals
; Correlation coefficient
; Lidar observation
; Meteorological condition
; Meteorological measurements
; Micrometeorological measurements
; Radiosonde measurements
; Optical radar
; aerosol
; backscatter
; boundary layer
; climatology
; ground-based measurement
; lidar
; micrometeorology
; observatory
; radiosonde
; suburban area
; turbulent mixing
; vertical profile
; France
; Ile de France
; Paris
; Ville de Paris
英文摘要: A new objective method for the determination of the atmospheric boundary layer (ABL) depth using routine vertically pointing aerosol lidar measurements is presented. A geophysical process-based analysis is introduced to improve the attribution of the lidar-derived aerosol gradients, which is so far the most challenging part in any gradient-based technique. Using micrometeorological measurements of Obukhov length scale, both early morning and evening transition periods are determined which help separate the turbulence regimes during well-mixed convective ABL and nocturnal/stable ABL. The lidar-derived aerosol backscatter signal intensity is used to determine the hourly-averaged vertical profiles of variance of the fluctuations of particle backscatter signal providing the location of maximum turbulent mixing within the ABL; thus, obtained mean ABL depth guides the attribution by searching for the appropriate minimum of the gradients. An empirical classification of the ABL stratification patterns into three different types is proposed by determining the changes in the near-surface stability scenarios. First results using the lidar observations obtained between March and July in 2011 at SIRTA atmospheric observatory near Palaiseau (Paris suburb) in France demonstrate that the new attribution technique makes the lidar estimations of ABL depth more physically reliable under a wide spectrum of meteorological conditions. While comparing lidar and nearby radiosonde measurements of ABL depths, an excellent concordance was found with a correlation coefficient of 0.968 and 0.927 for daytime and nighttime measurements, respectively. A brief climatology of the characteristics of the ABL depth, its diurnal cycle, a detailed discussion of the morning and evening transitions are presented. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63377
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Laboratoire de Météorologie Dynamique, CNRS-Ecole Polytechnique, FR-91128 Palaiseau CEDEX, France; Department of Environmental Sciences, University of Virginia, Charlottesville, VA, United States; Institut Pierre-Simon Laplace, CNRS-Ecole Polytechnique, Paris, France; National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences, Sofia, Bulgaria
Recommended Citation:
Pal S.,Haeffelin M.,Batchvarova E.. Exploring a geophysical process-based attribution technique for the determination of the atmospheric boundary layer depth using aerosol lidar and near-surface meteorological measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)