Please use this identifier to cite or link to this item:
|Title:||An adaptive base point algorithm for the retrieval of aerosol microphysical properties||Authors:||Osterloh, Lukas
Papayannis, Alexandros D.
|Major Field of Science:||Social Sciences||Field Category:||Other Social Sciences||Keywords:||Aerosol particles;Inverse problem;Lidar;Microphysical parameters||Issue Date:||2011||Source:||Open Atmospheric Science Journal, 2011, vol. 5, no. 1, pp. 61-73||Volume:||5||Issue:||1||Start page:||61||End page:||73||Journal:||Open Atmospheric Science Journal||Abstract:||We propose a new iterative algorithm for the retrieval of the microphysical properties of stratospheric and tropospheric aerosols from multiwavelength lidar data. We consider the basic equation as an ill-posed problem and solve the system derived from spline collocation via a Padé iteration. The algorithm takes special care of the fact that the reconstruction of the distribution via spline collocation is very sensitive to the choice of base points of the chosen spline basis. The algorithm makes use of this fact by changing the base points used for the spline collocation at certain iteration steps. In addition, the effects of projection to ensure a nonnegative solution are examined. We tested how well this and other algorithms are suitable for retrieving the complex refractive index of the particles as well. We also examine whether the algorithm is capable of distinguishing between different, very small imaginary parts of the refractive index, which is often a main problem in practice. Finally, the algorithm is applied to real multiwavelength Raman lidar data and our results are partially validated by the thermodynamic chemical model Isorropia II.||ISSN:||1874-2823||DOI:||10.2174/1874282301105010061||Rights:||© Osterloh et al. Licensee Bentham Open. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.||Type:||Article||Affiliation:||National Technical University Of Athens||Affiliation :||University of Potsdam
National Technical University of Athens
|Appears in Collections:||Άρθρα/Articles|
Files in This Item:
checked on Jun 15, 2021
Page view(s) 50207
checked on Jun 16, 2021
checked on Jun 16, 2021
Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.