Lidar aerosol ratio: Measurements and models

J. A. Reagan, K. J. Thome, D. M. Powell

Research output: Contribution to conferencePaperpeer-review

11 Scopus citations


Lidar offers an effective means for monitoring and characterizing global aerosol properties. While relative backscatter maps provided by spaceborne lidar measurements such as those obtained with LITE are valuable for delineating global aerosol structural features, obtaining more quantitative information needed for assessing aerosol radiative effects, namely, retrieval of aerosol extinction and backscatter, requires more information/constraints than what is provided by simple, single-direction lidar soundings. The aerosol extinction-to-backscatter ratio, or lidar aerosol ratio, Sa, is a key parameter which, if known, permits retrieval of aerosol backscatter and extinction profiles from the lidar measurements. This paper assesses Sa determinations obtained from a number of lidar, nephelometer and solar radiometer/sky radiance observations. Results of modeling studies to relate different aerosol models to various ranges of Sa values are also considered. The goal is to establish an Sa climatology that can be used to aid aerosol retrievals from satellite lidar observations such as those to be provided by GLAS and PICASO-CENA.

Original languageEnglish (US)
Number of pages4
StatePublished - 2001
Event2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001) - Sydney, NSW, Australia
Duration: Jul 9 2001Jul 13 2001


Other2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001)
CitySydney, NSW

ASJC Scopus subject areas

  • Computer Science Applications
  • General Earth and Planetary Sciences


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