Abstract
A transportable scanning multiwavelength lidar has been installed for the independent and simultaneous determination of the particle backscatter coefficient at 6 wavelengths between 355 and 1064 nm and of the particle extinction coefficient at 355 and 532 nm. The physical particle parameters including the complex refractive index are retrieved from the optical data by an inversion scheme based on the Tikhonov's regularization technique. The optical and physical parameter sets serve as input in radiative transfer calculations to estimate the radiative forcing of the particles at the top of the atmosphere and at the surface. Quite different particle properties could be observed during the Aerosol Characterization Experiment (Portugal, 1997), the Lindenberger Aerosol Experiment (Germany, 1998) and the Indian Ocean Experiment (Maldives, 1999-2000). We present measurement examples which demonstrates this approach of comprehensive aerosol characterization.
Original language | English |
---|---|
Pages (from-to) | 390-397 |
Number of pages | 8 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 4341 |
DOIs | |
Publication status | Published - 1 Jan 2001 |
Event | 7th International Symposium on Atmospheric and Ocean Optics - Tomsk, Russian Federation Duration: 19 Jul 2000 → 22 Jul 2000 |
Keywords
- Aerosol characterization
- Multiwavelength lidar
- Particle backscatter and extinction coefficient
- Radiative transfer calculation
- Regularization