Lidar-Radiometer Inversion Code (LIRIC) for the retrieval of vertical aerosol properties from combined lidar/radiometer data: development and distribution in EARLINET
Metadatos
Afficher la notice complèteEditorial
Copernicus Publications; European Geosciences Union
Date
2016-03-21Referencia bibliográfica
Chaikovsky, A., Dubovik, O., Holben, B., Bril, A., Goloub, P., Tanré, D., ... & Grudo, J. (2016). Lidar-Radiometer Inversion Code (LIRIC) for the retrieval of vertical aerosol properties from combined lidar/radiometer data: development and distribution in EARLINET. Atmospheric Measurement Techniques, (3), 1181-1205. [doi:10.5194/amt-9-1181-2016]
Patrocinador
European Union (EU) 654109; ACTRIS Research Infrastructure project within the European Union 262254; European Union (EU) 289923 - ITARSRésumé
This paper presents a detailed description of
LIRIC (LIdar-Radiometer Inversion Code) algorithm for simultaneous processing of coincident lidar and radiometric
(sun photometric) observations for the retrieval of the aerosol
concentration vertical profiles. As the lidar/radiometric input data we use measurements from European Aerosol Research Lidar Network (EARLINET) lidars and collocated
sun-photometers of Aerosol Robotic Network (AERONET).
The LIRIC data processing provides sequential inversion of
the combined lidar and radiometric data. The algorithm starts
with the estimations of column-integrated aerosol parameters
from radiometric measurements followed by the retrieval of
height dependent concentrations of fine and coarse aerosols
from lidar signals using integrated column characteristics of aerosol layer as a priori constraints. The use of polarized lidar observations allows us to discriminate between spherical
and non-spherical particles of the coarse aerosol mode.
The LIRIC software package was implemented and tested
at a number of EARLINET stations. Intercomparison of the
LIRIC-based aerosol retrievals was performed for the observations by seven EARLINET lidars in Leipzig, Germany on
25 May 2009. We found close agreement between the aerosol
parameters derived from different lidars that supports high
robustness of the LIRIC algorithm. The sensitivity of the retrieval results to the possible reduction of the available observation data is also discussed.