High-Resolution Doppler Lidar for Boundary Layer and Cloud Research

Abstract The high-resolution Doppler lidar (HRDL) was developed to provide higher spatial, temporal, and velocity resolution and more reliable performance than was previously obtainable with CO2-laser-based technology. The improved performance is needed to support continued advancement of boundary layer simulation models and to facilitate high-resolution turbulent flux measurements. HRDL combines a unique, eye-safe, near-IR-wavelength, solid-state laser transmitter with advanced signal processing and a high-speed scanner to achieve 30-m range resolution and a velocity precision of ∼10 cm s−1 under a variety of marine and continental boundary layer conditions, depending on atmospheric and operating conditions. An attitude-compensating scanner has been developed to facilitate shipboard marine boundary layer observations. Vertical velocities, fine details of the wind profile near the surface, turbulence kinetic energy profiles, and momentum flux are measurable with HRDL. The system is also useful for cloud s...

[1]  Robert M. Banta,et al.  Two- and Three-Dimensional Simulations of the 9 January 1989 Severe Boulder Windstorm: Comparison with Observations , 1994 .

[2]  Sammy W. Henderson,et al.  Coherent laser radar at 2 μm using solid-state lasers , 1993, IEEE Trans. Geosci. Remote. Sens..

[3]  Volker Wulfmeyer,et al.  Measuring Second- through Fourth-Order Moments in Noisy Data , 2000 .

[4]  Robert M. Banta,et al.  Nocturnal cleansing flows in a tributary valley , 1997 .

[5]  R. Cupp,et al.  Optimizing a pulsed Doppler lidar. , 1990, Applied optics.

[6]  K. A. Browning,et al.  The Determination of Kinematic Properties of a Wind Field Using Doppler Radar , 1968 .

[7]  Alfred J. Bedard,et al.  Details of Colliding Thunderstorm Outflows as Observed by Doppler Lidar , 1990 .

[8]  Doppler Radar Observations of the Development of a Boundary-Layer Nocturnal Jet , 1992 .

[9]  B. J. Rye,et al.  Heterodyne lidar returns in the turbulent atmosphere: performance evaluation of simulated systems. , 2000, Applied optics.

[10]  P. H. Gudiksen,et al.  Implications of Small-Scale Flow Features to Modeling Dispersion over Complex Terrain. , 1996 .

[11]  A Goldman,et al.  The HITRAN database: 1986 edition. , 1987, Applied optics.

[12]  B. J. Rye,et al.  Discrete spectral peak estimation in incoherent backscatter heterodyne lidar. I. Spectral accumulation and the Cramer-Rao lower bound , 1993, IEEE Trans. Geosci. Remote. Sens..

[13]  Rod Frehlich.  Cramer-Rao bound for Gaussian random processes and applications to radar processing of atmospheric signals , 1993, IEEE Trans. Geosci. Remote. Sens..

[14]  Volker Wulfmeyer,et al.  Investigation of Turbulent Processes in the Lower Troposphere with Water Vapor DIAL and Radar–RASS , 1999 .

[15]  R. M. Hardesty,et al.  Doppler Lidar Observations of a Downslope Windstorm , 1988 .

[16]  Madison J. Post,et al.  Smoke-Column Observations from Two Forest Fires Using Doppler Lidar and Doppler Radar , 1992 .

[17]  D. Levinson,et al.  Influence of canyon-induced flows on flow and dispersion over adjacent plains , 1995 .

[18]  J. Bösenberg,et al.  Measurement of Water Vapor Flux Profiles in the Convective Boundary Layer with Lidar and Radar-RASS , 1994 .

[19]  R. E. Cupp,et al.  Doppler lidar measurement of profiles of turbulence and momentum flux , 1989 .

[20]  Robert M. Banta,et al.  Sea Breezes Shallow and Deep on the California Coast , 1995 .

[21]  J. E. James,et al.  Lidar observations of turbulent vortex shedding by an isolated topographic feature , 1996 .

[22]  B. J. Rye,et al.  Feasibility of tropospheric water vapor profiling using infrared heterodyne differential absorption lidar , 1995 .

[23]  D. Stensrud.  Importance of Low-Level Jets to Climate: A Review. , 1996 .

[24]  Measurement of the vertical flux of turbulent kinetic energy with a single Doppler radar , 1989 .

[25]  C. Grund,et al.  Laser performance of diode-pumped thulium-doped Y3Al5O12, (Y, Lu)3Al5O12, and Lu3Al5O12 crystals. , 1994, Optics letters.

[26]  R. L. Schwiesow,et al.  The NCAR Airborne Infrared Lidar System: Status and Applications , 1996 .

[27]  Yong Han,et al.  Multiwavelength Observations of a Developing Cloud System: The FIRE II 26 November 1991 Case Study , 1995 .

[28]  W. Cotton,et al.  Cloud resolving simulations of Arctic stratus: Part II: Transition-season clouds , 1999 .

[29]  S. Henderson,et al.  Coherent Doppler lidar measurements of winds in the weak signal regime. , 1997, Applied optics.

[30]  A. Blackadar.  Boundary Layer Wind Maxima and Their Significance for the Growth of Nocturnal Inversions , 1957 .

[31]  D. Levinson,et al.  Observations of a Terrain-Forced Mesoscale Vortex and Canyon Drainage Flows along the Front Range of Colorado , 1995 .

[32]  Benjamin Friedlander,et al.  Computation of the exact information matrix of Gaussian time series with stationary random components , 1985, 1985 24th IEEE Conference on Decision and Control.

[33]  David H. Levinson,et al.  Evolution of the Monterey Bay Sea-Breeze Layer As Observed by Pulsed Doppler Lidar , 1993 .