An assessment of Multiangle Imaging Spectroradiometer (MISR) stereo‐derived cloud top heights and cloud top winds using ground‐based radar, lidar, and microwave radiometers

[1] In this article stereoscopically derived cloud top heights and cloud winds estimated from the Multiangle Imaging Spectroradiometer (MISR) are assessed. MISR is one of five instruments on board the NASA Terra satellite. The cloud top height assessment is based on a comparison of more than 4 years of MISR retrievals with that derived from ground-based radar and lidar systems operated by the U.S. Department of Energy Atmospheric Radiation Measurement program. The assessment includes a comparison of the MISR cloud top heights and ground-based data sets as a function of cloud optical depth and a simple cloud classification. Overall, we find that the MISR retrieval is working well with little bias for most cloud types, when the cloud is sufficiently optically thick to be detected. The detection limit is found to be around optical depth 0.3 to 0.5, except over snow and ice surfaces where it is larger. The standard deviation across all clouds is less than about 1000 m for the MISR best winds retrievals at all ARM sites, and the standard deviation for the MISR without winds retrieval varied between about 1000 to 1300 m, depending on the site. The performance for various cloud types is explored.

[1]  S. Matrosov,et al.  Profiling cloud ice mass and particle characteristic size from Doppler radar measurements , 2002 .

[2]  J. Muller,et al.  Assessment of the Performance of the Chilbolton 3-GHz Advanced Meteorological Radar for Cloud-Top-Height Retrieval , 2005 .

[3]  Jan-Peter Muller,et al.  Intercomparison of multiple years of MODIS, MISR and radar cloud-top heights , 2005 .

[4]  Susan Paradise,et al.  MISR stereoscopic image matchers: techniques and results , 2002, IEEE Trans. Geosci. Remote. Sens..

[5]  R. Davies,et al.  Simultaneous retrieval of cloud motion and height from polar‐orbiter multiangle measurements , 2001 .

[6]  Graham Feingold,et al.  The Retrieval of Stratus Cloud Droplet Effective Radius with Cloud Radars , 2002 .

[7]  Kenneth Sassen,et al.  Estimation of Cloud Content by W-Band Radar , 1996 .

[8]  J. Muller,et al.  The value of multiangle measurements for retrieving structurally and radiatively consistent properties of clouds, aerosols, and surfaces , 2005 .

[9]  Stephen A. Cohn,et al.  Radar Wind Profiler Radial Velocity: A Comparison with Doppler Lidar , 2002 .

[10]  Shepard A. Clough,et al.  An assessment of microwave absorption models and retrievals of cloud liquid water using clear‐sky data , 2003 .

[11]  Jan-Peter Muller,et al.  Comparison of cloud top heights derived from MISR stereo and MODIS CO2‐slicing , 2002 .

[12]  Jan-Peter Muller,et al.  Assessment of MISR and MODIS cloud top heights through inter‐comparison with a back‐scattering lidar at SIRTA , 2004 .

[13]  David J. Diner,et al.  Performance of the MISR instrument during its first 20 months in Earth orbit , 2002, IEEE Trans. Geosci. Remote. Sens..

[14]  Gerald G. Mace,et al.  On retrieving the microphysical properties of cirrus clouds using the moments of the millimeter-wavelength Doppler spectrum , 2002 .

[15]  R. Davies,et al.  Feasibility and Error Analysis of Cloud Motion Wind Extraction from Near-Simultaneous Multiangle MISR Measurements , 2001 .

[16]  D. W. van de Kamp,et al.  Data processing algorithms used by NOAA’s wind profiler demonstration network , 1994 .

[17]  E. Clothiaux,et al.  Cloud Droplet Size Distributions in Low-Level Stratiform Clouds , 2000 .

[18]  D. Starr,et al.  Dynamical Structure and Turbulence in Cirrus Clouds: Aircraft Observations during FIRE , 1995 .

[19]  Warner L. Ecklund,et al.  An Evaluation of Wind Profiler, RASS, and Microwave Radiometer Performance , 1993 .

[20]  Jennifer M. Comstock,et al.  Retrieval of Cirrus Cloud Radiative and Backscattering Properties Using Combined Lidar and Infrared Radiometer (LIRAD) Measurements , 2001 .

[21]  K. Davis,et al.  Wind Profiler and RASS Measurements Compared with Measurements from a 450-m-Tall Tower , 1998 .

[22]  J. Muller,et al.  Multiangle observations of Arctic clouds from FIRE ACE: June 3, 1998, case study , 2001 .

[23]  Jan-Peter Muller,et al.  Operational retrieval of cloud-top heights using MISR data , 2002, IEEE Trans. Geosci. Remote. Sens..

[24]  Shepard A. Clough,et al.  Thin Liquid Water Clouds: Their Importance and Our Challenge , 2007 .

[25]  A. Grün,et al.  Stereo cloud‐top height retrieval with ASTER and MISR , 2006 .

[26]  R. Davies,et al.  Cloud motion vectors from MISR using sub-pixel enhancements , 2007 .

[27]  E. Clothiaux,et al.  Objective Determination of Cloud Heights and Radar Reflectivities Using a Combination of Active Remote Sensors at the ARM CART Sites , 2000 .