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[Obtaining aerosol backscattering coefficient using pure rotational Raman-Mie scattering spectrum].
Wei Rong1, Si-Ying Chen, Yin-Chao Zhang
1School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China. rongwei01430603@163.com
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|February 8, 2013
Summary
A new method accurately measures atmospheric aerosol backscattering coefficient using pure rotational Raman scattering, overcoming limitations of traditional Klett and Fernald techniques. This approach enhances accuracy by avoiding assumptions and overlap correction errors.
Area of Science:
- Atmospheric physics
- Remote sensing
- Lidar technology
Context:
- Traditional methods for atmospheric aerosol backscattering coefficient measurement, such as Klett and Fernald, rely on assumptions linking extinction and backscattering coefficients.
- These assumptions introduce errors into the measurements.
Purpose:
- To present a novel method for inverting the aerosol backscattering coefficient.
- To eliminate errors associated with traditional methods and overlap correction.
Summary:
- The new method utilizes the intensity of elastic scattering and pure rotational Raman scattering, combined with atmospheric temperature and pressure data.
- Pure rotational Raman backscattering coefficient is theoretically dependent only on atmospheric temperature and pressure.
- This method was validated using data from a Raman-Mie scattering Lidar, with results compared against Klett and Fernald methods.
Impact:
- Provides a more accurate determination of the aerosol backscattering coefficient.
- Improves the reliability of atmospheric aerosol studies.
- Offers a potential advancement in Lidar-based atmospheric monitoring.
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