A
Ali Omar
Researcher at Langley Research Center
Publications - 110
Citations - 7958
Ali Omar is an academic researcher from Langley Research Center. The author has contributed to research in topics: Lidar & Aerosol. The author has an hindex of 34, co-authored 100 publications receiving 6448 citations. Previous affiliations of Ali Omar include University of Benghazi & Hampton University.
Papers
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Journal ArticleDOI
Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms
David M. Winker,Mark A. Vaughan,Ali Omar,Yongxiang Hu,Kathleen A. Powell,Zhaoyan Liu,William H. Hunt,Stuart A. Young +7 more
TL;DR: Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) is a two-wavelength polarization lidar that performs global profiling of aerosols and clouds in the troposphere and lower stratosphere as discussed by the authors.
Journal ArticleDOI
The CALIPSO Automated Aerosol Classification and Lidar Ratio Selection Algorithm
Ali Omar,David M. Winker,Mark A. Vaughan,Yongxiang Hu,Charles R. Trepte,Richard Ferrare,Kam-Pui Lee,Chris A. Hostetler,Chieko Kittaka,Raymond R. Rogers,Ralph Kuehn,Zhaoyan Liu +11 more
TL;DR: In this paper, the extinction-to-backscatter ratio (lidar ratio) selection scheme for the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) aerosol products is described.
Journal ArticleDOI
The CALIPSO Lidar Cloud and Aerosol Discrimination: Version 2 Algorithm and Initial Assessment of Performance
Zhaoyan Liu,Mark A. Vaughan,David M. Winker,Chieko Kittaka,Brian Getzewich,Ralph Kuehn,Ali Omar,Kathleen A. Powell,Charles R. Trepte,Chris A. Hostetler +9 more
TL;DR: In this paper, the theoretical basis of the CALIPSO lidar cloud and aerosol discrimination (CAD) algorithm is reviewed and enhancements made to the version 2 algorithm that is used in the current data release (release 2).
Proceedings ArticleDOI
Fully automated analysis of space-based lidar data: an overview of the CALIPSO retrieval algorithms and data products
Mark A. Vaughan,Stuart A. Young,David M. Winker,Kathleen A. Powell,Ali Omar,Zhaoyan Liu,Zhaoyan Liu,Yongxiang Hu,Chris A. Hostetler +8 more
TL;DR: An integrated analysis scheme that employs a nested, multi-grid averaging technique designed to optimize tradeoffs between spatial resolution and signal-to-noise ratio is described.
Journal ArticleDOI
Development of global aerosol models using cluster analysis of Aerosol Robotic Network (AERONET) measurements
TL;DR: In this article, the authors used radiance measurements and inversions of the Aerosol Robotic Network (AERONET) to classify global atmospheric aerosols using the complete archive of the AERONet data set as of December 2002 and dating back to 1993 for some sites.