Aerosol Characterization

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Aerosol Characterization Using AO LIDAR data
Vazjier M. Rosario, Hamed Parsiani, Advisor
University of Puerto Rico, Mayaguez
Campus Electrical and Computer Engineering
Department
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• Conceptual Idea
• Data Review
• Power Profiles
• Results
• Standard Atmospheric Models
• Extinction Coefficient
• Backscatter Coefficient
• Optical Thickness
• LIDAR Ratio
• Future Work

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Aerosol Characterization
Conceptual Idea

• Our research goal is to be able to understand
  the planets radiation budget with the help of a 3
  wavelength (355, 532, 1064 nm) fixed LIDAR that
  will be established at the University of Puerto
  Rico Mayagüez Campus (UPRM). By means of studying
  the Aerosol spatial and temporal variations over
  Puerto Rico.
• For the time being, we have manipulate the
  available AO LIDAR data in order to improve the
  Aerosol analysis by calculating the extinction
  and backscattering coefficients, which will lead
  to the determination of aerosol parameters such
  as effective radius, single scattering Albedo,
  aerosol concentration, and eventually optical
  depth.

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Aerosol Characterization
Data Review

• Intensity profiles from previously analyzed AO
  have been used and manipulated to obtain the
  desired results.
• Since there is no available data of different
  wavelengths simultaneously in the same night of
  observation, the data of tow consecutive days, 23
  Jan 01 and 24 Jan 01 at tow different
  wavelengths, 532 and 589 nm respectively were
  used.
• In this approach we are assuming that variations
  between the power profiles of these consecutive
  days are very small.

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Aerosol Characterization
Power Profiles
Power profiles used in the analysis, where
trimmed form 20 to 35 km.
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Aerosol Characterization
Results
Standard Atmospheric Model
Temperature
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Aerosol Characterization
Results
Standard Atmospheric Model
Pressure
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Aerosol Characterization
Results
Standard Atmospheric Model
Number Density
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Aerosol Characterization
Results
Extinction Coefficient Calculation
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Aerosol Characterization
Results
Extinction Coefficient Calculation
Molecular Extinction Coefficient
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Aerosol Characterization
Results
Extinction Coefficient Calculation
Particle Extinction Coefficient
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Aerosol Characterization
Future Work

• Use the results for derivation of other aerosol
  parameters such as
• Backscatter coefficient
• Optical depth
• Effective radius
• Single scattering Albedo
• Aerosol concentration

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Aerosol Characterization
Thanks
QUESTIONS ?