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Steven E. Mitchell and Jeffrey P. Thayer

1. Introduction The development of laser ranging has enabled a variety of remote sensing distance measurements, including observation of hard targets such as bare terrain and satellite reflectors ( Abshire et al. 2005 ; Degnan 2001 ; Degnan et al. 2002 ) and distributed targets such as vegetation canopies ( Blair et al. 1999 ; Harding and Carabajal 2005 ). Range-resolved observations through semitransparent targets are enabled by the lidar technique, which has been used to profile the

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Simone Lolli, Ellsworth J. Welton, and James R. Campbell

. , Hlavka D. L. , Welton E. J. , Flynn C. J. , Turner D. D. , Spinhirne J. D. , Scott V. S. , and Hwang I. H. , 2002 : Full-time, eye-safe cloud and aerosol lidar observation at Atmospheric Radiation Measurement Program sites: Instrument and data processing . J. Atmos. Oceanic Technol. , 19 , 431 – 442 . Campbell, J. R. , Welton E. J. , Spinhirne J. D. , Ji Q. , Tsay S.-C. , Piketh S. J. , Barenbrug M. , and Holben B. N. , 2003 : Micropulse lidar observations of

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William H. Hunt, David M. Winker, Mark A. Vaughan, Kathleen A. Powell, Patricia L. Lucker, and Carl Weimer

1. Introduction This paper describes the design and performance of the Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP), a three-channel elastic backscatter lidar that is the prime payload instrument on the Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observation ( CALIPSO ) satellite. It provides background material for a collection of CALIOP algorithm papers that are to be published in the Journal of Atmospheric and Oceanic Technology ( Winker et al. 2009 ). CALIPSO was

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C. M. R. Platt, David W. Reynolds, and N. L. Abshire

F-BRUAR-1980 C. M. R. PLATT, DAVID W. REYNOLDS AND N. L. ABSHIRE 195Satellite and Lidar Observations of the Albedo, Emittance and Optical Depth of Cirrus Compared to Model Calculations C. M. R. PLATTCS1RO Division of Atmospheric Physics, Aspendale, Victoria, Australia, 3195 DAVID W. REYNOLDSDepartment of Atmospheric Sciences, Colorado State University, Fort Collins 80,523 N. L

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Dominique Bouniol, Fleur Couvreux, Pierre-Honoré Kamsu-Tamo, Madeleine Leplay, Françoise Guichard, Florence Favot, and Ewan J. O’Connor

.g., Betts and Viterbo 2005 ; Betts 2007 ; Garratt 1993 ). Clouds and cloud feedbacks are thus a key component of the monsoon system that need to be better documented and understood. A major advance over poorly documented regions was achieved in 2006 with the launch of the CloudSat ( Stephens et al. 2002 ) and Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations ( CALIPSO ; Winker et al. 2007 ) satellites that provide a cloud radar and a lidar within the A-Train constellation. This

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Yali Luo, Renhe Zhang, Weimiao Qian, Zhengzhao Luo, and Xin Hu

precipitation radar (PR) data for the Himalayan and South Asian region. Their results indicate weaker convection over the plateau than the south slope of the plateau and the southern Asian monsoon region. As major components of the A-Train satellite constellation ( Stephens et al. 2002 ), the CloudSat and Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO; Winker et al. 2003 ) satellites were launched in April 2006 ( Stephens et al. 2008 ), probing nearly the same volumes of the

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Dylan W. Reif, Howard B. Bluestein, Tammy M. Weckwerth, Zachary B. Wienhoff, and Manda B. Chasteen

: RaXPol Radar Data, cfRadial format, version 1.0. UCAR/NCAR–Earth Observing Laboratory, accessed 29 August 2018, . 10.5065/D6VD6WV2 Bluestein , H. B. , J. B. Houser , M. M. French , J. C. Snyder , G. D. Emmitt , I. PopStefanija , C. Baldi , and R. T. Bluth , 2014 : Observations of the boundary layer near tornadoes and in supercells using a mobile, collocated, pulsed Doppler lidar and radar . J. Atmos. Oceanic Technol. , 31 , 302 – 325

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Andrew Heymsfield, Dave Winker, Melody Avery, Mark Vaughan, Glenn Diskin, Min Deng, Valentin Mitev, and Renaud Matthey

microphysical properties necessary to model accurately the radiative transfer in cloudy regions and to assess the role of clouds in climate. The National Aeronautics and Space Administration (NASA) A-Train constellation of satellites flying in formation includes two active cloud-profiling instruments. The Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) on the Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations ( CALIPSO ) satellite is a nadir-viewing, polarization

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R. K. Newsom, D. D. Turner, R. Lehtinen, C. Münkel, J. Kallio, and R. Roininen

observations for calibration, for example, from a radiosonde or microwave radiometer ( Whiteman et al. 1992 ; Turner and Goldsmith 1999 ). Additionally, some RLs exhibit some degree of residual overlap which can result in large biases in WVMR at low altitudes. Differential absorption lidars (DIAL) produce range-resolved measurements of trace gas concentrations from the difference in attenuation observed between two closely spaced (in the spectral sense) laser lines. Since two laser lines are needed, the

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Shannon Mason, Christian Jakob, Alain Protat, and Julien Delanoë

observations have presented a new opportunity to improve our understanding of Southern Ocean clouds; recent studies have used radar and lidar profiles to produce detailed climatologies and vertical profiles of Southern Ocean clouds in terms of cloud microphysics and macrophysics ( Mace 2010 ; Huang et al. 2012a , b ; Verlinden et al. 2011 ). A useful approach to identifying and distinguishing between cloud processes or properties is to group self-similar cloud scenes based on passive satellite

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