AERONET, airborne HSRL, and CALIPSO aerosol retrievals compared and combined: A case study

[1] On 4 August 2007 a unique opportunity for the intercomparison of aerosol retrievals occurred as part of the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and Twilight Zone (CATZ) campaign in the Washington, D. C., urban complex. During the course of the experiment, several Aerosol Robotic Network (AERONET) Cimel Sun photometers were deployed along the CALIPSO track, together with NASA Langley Research Center's airborne High Spectral Resolution Lidar (HSRL) instrument flying overhead. A series of daytime coincident measurements was made by the various instruments, permitting a number of important opportunities for the intercomparison of the various instrumental measurements of aerosols as well as evaluation of the Constrained Ratio Aerosol Model-fit (CRAM) technique for aerosol retrievals from elastic backscatter lidar. The results from the intercomparison are discussed as an illustrative case study in sensor combination and aerosol retrieval methodology.

[1]  D. Winker,et al.  The CALIPSO Automated Aerosol Classification and Lidar Ratio Selection Algorithm , 2009 .

[2]  K. Powell,et al.  Revised Calibration Strategy for the CALIOP 532 nm Channel. Part II; Daytime , 2008 .

[3]  Jean-François Léon,et al.  Application of spheroid models to account for aerosol particle nonsphericity in remote sensing of desert dust , 2006 .

[4]  X. Wang,et al.  Spaceborne lidar aerosol retrieval approaches based on aerosol model constraints , 2004, IGARSS 2004. 2004 IEEE International Geoscience and Remote Sensing Symposium.

[5]  F. G. Fernald Analysis of atmospheric lidar observations: some comments. , 1984, Applied optics.

[6]  X. Wang,et al.  Spaceborne lidar calibration from cirrus and molecular backscatter returns , 2002, IEEE Trans. Geosci. Remote. Sens..

[7]  A. Smirnov,et al.  AERONET-a federated instrument network and data archive for aerosol Characterization , 1998 .

[8]  O. Dubovik,et al.  Variability of aerosol and spectral lidar and backscatter and extinction ratios of key aerosol types derived from selected Aerosol Robotic Network locations , 2005 .

[9]  Benjamin M. Herman,et al.  Determination of aerosol height distributions by lidar , 1972 .

[10]  R. Ferrare,et al.  NASA LaRC airborne high spectral resolution lidar aerosol measurements during MILAGRO: observations and validation , 2009 .

[11]  General formula for the errors in aerosol properties determined from lidar measurements at a single wavelength. , 1985, Applied optics.

[12]  Wayne C. Welch,et al.  Airborne high spectral resolution lidar for profiling aerosol optical properties. , 2008, Applied optics.

[13]  Y. Sasano,et al.  Error caused by using a constant extinction/backscattering ratio in the lidar solution. , 1985, Applied optics.

[14]  John A. Reagan,et al.  Analysis of Optical Properties of Saharan Dust Derived From Dual-Wavelength Aerosol Retrievals From CALIPSO Observations , 2010, IEEE Geoscience and Remote Sensing Letters.

[15]  Michael D. King,et al.  A flexible inversion algorithm for retrieval of aerosol optical properties from Sun and sky radiance measurements , 2000 .

[16]  D. Winker,et al.  Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms , 2009 .