University of Hertfordshire

From the same journal

By the same authors

  • Alexei Kolgotin
  • Detlef Mueller
  • Eduard V. Chemyakin
  • A. Romanov
  • Valentin Alehnovich
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Original languageEnglish
JournalApplied Optics
Journal publication date8 Nov 2017
StateSubmitted - 8 Nov 2017


We conclude our series of presentations on the development of the
gradient correlation method (GCM) which can be used for an improved
stabilization of the solution space of particle microphysical parameters
derived from measurements with multiwavelength Raman and High-
Spectral-Resolution Lidar (3 backscatter + 2 extinction coefficients).
We show results of three cases studies. The data were taken with a
ground-based multiwavelength Raman lidar during the Saharan Mineral
Dust Experiment (SAMUM) in the Cape Verde Islands (North Atlantic).
These cases describe mixtures of dust with smoke. For this
analysis we separated the contribution of smoke to the optical data and
only used these optical profiles for the test of GCM. The results show a
significant stabilization of the solution space of the particle microphysical
parameter retrieval on the particle radius domain from 0.03 m to
10 m, the real part of the complex refractive index domain from 1.3 to
1.8 and the imaginary part from 0 to 0.1. This new method will be included
in TiARA (Tikhonov Advanced Regularization Algorithm)
which is a fully automated, unsupervised algorithm that used for the
analysis of the world-wide first airborne 3 backscatter + 2 extinction
high-spectral-resolution lidar developed by NASA Langley Research

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