Comparison between Backscatter Lidar and Radiosonde Measurements of the Diurnal and Nocturnal Stratification in the Lower Troposphere

A collection of boundary layer heights has been derived from measurements performed by a groundbased backscatter lidar in Neuchâtel, Switzerland (47.000°N, 6.967°E, 485 m ASL). A dataset of 98 cases have been collected during 2 yr. From these data, 61 are noon and 37 are midnight cases. The following two different schemes were used to retrieve the mixed layer depth and the height of the residual layer from the measurements: the gradient and variance methods. The obtained values were compared with those derived from the potential temperature profiles as computed from radiosonde data. For nocturnal cases, the height of the first aerosol layer above the residual layer was also compared to the corresponding potential temperature value. Correlation coefficients between lidar and radiosonde in both convective and stable conditions are between 0.88 and 0.97.

[1]  Stephen A. Cohn,et al.  Boundary Layer Height and Entrainment Zone Thickness Measured by Lidars and Wind-Profiling Radars , 2000 .

[2]  S. H. Melfi,et al.  Lidar observations of vertically organized convection in the planetary boundary layer over the ocean , 1985 .

[3]  Murry L. Salby,et al.  Fundamentals of atmospheric physics , 1995 .

[4]  P. Russell,et al.  A comparison of atmospheric structure as observed with monostatic acoustic sounder and lidar techniques , 1974 .

[5]  D. Steyn,et al.  A Comparison Of Aerosol-Layer And Convective Boundary-Layer Structure Over A Mountain Range During Staaarte '97 , 2004 .

[6]  Edwin W. Eloranta,et al.  Convective boundary layer mean depths and cloud geometrical properties obtained from volume imaging lidar data , 1995 .

[7]  William P. Hooper,et al.  Lidar Measurements of Wind in the Planetary Boundary Layer: The Method, Accuracy and Results from Joint Measurements with Radiosonde and Kytoon. , 1986 .

[8]  P. Malguzzi,et al.  Sensitivity of quantitative precipitation forecasts to boundary layer parameterization: a flash flood case study in the Western Mediterranean , 2005 .

[9]  O. Cramer.  Potential Temperature Analysis for Mountainous Terrain , 1972 .

[10]  Ulla Wandinger,et al.  Introduction to Lidar , 2005 .

[11]  Raymond M. Hoff,et al.  The Detection of Mixed Layer Depth and Entrainment Zone Thickness from Lidar Backscatter Profiles , 1999 .

[12]  Albert A. M. Holtslag,et al.  A comparison of ABL heights inferred routinely from lidar and radiosondes at noontime , 1994 .

[13]  J. Bösenberg,et al.  EARLINET: A European Aerosol Research Lidar Network to Establish an Aerosol Climatology , 2003 .

[14]  J. Bösenberg,et al.  Laser remote sensing of the planetary boundary layer , 2002 .

[15]  D. Ruffieux,et al.  Influence of Radiation on the Temperature Sensor Mounted on the Swiss Radiosonde , 2003 .

[16]  D. Zardi,et al.  A Method to Determine the Capping Inversion of the Convective Boundary Layer , 2004 .

[17]  C. Flamant,et al.  Urban boundary-layer height determination from lidar measurements over the paris area. , 1999, Applied optics.

[18]  R. Carey.  Atmospheric Science: An Introductory Survey , 1978 .

[19]  V. Freudenthaler,et al.  Mixing layer height over Munich, Germany : Variability and comparisons of different methodologies , 2006 .

[20]  K. B. Strawbridge,et al.  Spatial And Temporal Variability Of Mixed-Layer Depth And Entrainment Zone Thickness , 2000 .

[21]  Variation of the aerosol stratification over the Rhine Valley during Foehn development: a backscatter lidar study , 2004 .

[22]  Alexandros Papayannis,et al.  Vertical aerosol distribution over Europe: Statistical analysis of Raman lidar data from 10 European Aerosol Research Lidar Network (EARLINET) stations , 2004 .

[23]  Petra Seibert,et al.  Review and intercomparison of operational methods for the determination of the mixing height , 2000 .

[24]  J. Streicher,et al.  Lidar: Range-Resolved Optical Remote Sensing of the Atmosphere , 2005 .

[25]  Valentin Mitev,et al.  Elevated aerosol stratification above the Rhine Valley under strong anticyclonic conditions , 2003 .

[26]  C. Flamant,et al.  LIDAR DETERMINATION OF THE ENTRAINMENT ZONE THICKNESS AT THE TOP OF THE UNSTABLE MARINE ATMOSPHERIC BOUNDARY LAYER , 1997 .

[27]  Donald H. Lenschow,et al.  An Objective Method for Deriving Atmospheric Structure from Airborne Lidar Observations , 2000 .

[28]  R. Banta,et al.  Atmospheric processes over complex terrain , 1990 .

[29]  Raymond M. Hoff,et al.  Use of airborne lidar to determine aerosol sources and movement in the Lower Fraser Valley (LFV), BC , 1997 .

[30]  J. F. R. McIlveen,et al.  Fundamentals of weather and climate , 1991 .

[31]  R. Stull.  An Introduction to Boundary Layer Meteorology , 1988 .

[32]  Raymond M. Hoff,et al.  The vertical chemical and meteorological structure of the boundary layer in the Lower Fraser Valley during Pacific '93 , 1997 .

[33]  J. M. Baldasano,et al.  Mixed-Layer Depth Determination in the Barcelona Coastal Area From Regular Lidar Measurements: Methods, Results and Limitations , 2006 .