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Relationships between vertical attenuation and surface meteorological range.
Applied Optics
|January 23, 2010
Summary
This study defines the haze regime using meteorological range limits. It establishes relationships between surface haze and vertical atmospheric attenuation across various wavelengths.
Area of Science:
- Atmospheric Science
- Optical Remote Sensing
- Aerosol Physics
Background:
- Haze significantly impacts surface visibility and atmospheric optical properties.
- Understanding haze requires defining its limits and relating surface conditions to vertical atmospheric effects.
Purpose of the Study:
- To define the lower and upper limits of the haze regime based on meteorological range.
- To develop quantitative relationships between surface haze and vertical aerosol attenuation.
- To compute vertical attenuation parameters for aerosols across a spectrum of wavelengths.
Main Methods:
- Defined haze regime limits using meteorological ranges of 1.2 km and 15 km.
- Selected eight representative meteorological ranges within these limits.
- Calculated vertical aerosol attenuation parameters by deriving aerosol scale height for each range.
- Computed attenuation for twenty wavelengths in UV, visible, and IR spectrum.
Main Results:
- Established defined lower (1.2 km) and upper (15 km) bounds for the haze regime.
- Derived aerosol scale heights correlating with specific meteorological ranges.
- Computed vertical aerosol attenuation parameters for multiple wavelengths.
- Integrated results with existing data on molecular, ozone, and aerosol attenuation up to 50 km.
Conclusions:
- The study provides a framework for quantifying haze effects on atmospheric visibility and optical properties.
- The derived relationships are crucial for atmospheric modeling and remote sensing applications.
- This research contributes to a better understanding of aerosol impacts on radiative transfer in the atmosphere.
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