Banca de QUALIFICAÇÃO: MARCOS PAULO ARAÚJO DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARCOS PAULO ARAÚJO DA SILVA
DATA : 11/08/2017
HORA: 09:00
LOCAL: Auditório do CCET
TÍTULO:

A Tropospheric LIDAR System Quality Assurance & Comparison of Aerosol Backscattering Profiles Within the Frame of EARLINET and LALINET Networks

 

 

PALAVRAS-CHAVES:

Klett-Fernald Inversion, Extinction Profiles, Backscattering Profiles, Atmospheric Aerosols, Data Quality Control.

PÁGINAS: 45
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

Observational data acquisition related to atmospheric aerosols is relevant for progress

in research on their influence on weather and climate. Due to their optical properties, they can interfere in the radiative balance and in the clouds microphysics changing their dimensions and lifetimes. The active remote sensing system Duster Light Detection and Ranging (Duster LIDAR), located in Natal, capital of Rio Grande do Norte, Brazil sends laser pulses to the atmosphere and detects aerosols optical characteristics through the interaction of the particles with light. This research will have two main foci: the first one is to compare light backscatter profiles due to the tropospheric aerosols calculated by two tools: the Single Calculus Chain (SCC), developed by the European Aerosol Research LIDAR Network (EARLINET) and the Inversion Algorithm of the Latin American LIDAR Network (LALINET). The same data set is going to be processed with both tools. Data was acquired through the Duster LIDAR during the afternoons of January 2017, at wavelengths 355 nm and 1064 nm, totaling 20 measurements with a mean duration of 2.5 hours. The comparison will be performed by means of the relative errors at each height of the backscatter profiles calculated by each of the tools. The second focus of this work is going to be the Duster LIDAR measurements quality control during the year of 2017. Dark Current, Zero Bin, Telecover and Rayleight Fit instrument tests will be performed according to LALINET standards. By means of these tests it is possible to verify errors in the system’s alignment, as well as to detect the noises and data registration delays to apply the necessary corrections. It is hoped that by the end of this research a solid methodology has been developed to adapt the data of the LIDAR Duster for processing with the EARLINET SCC and with the LALINET Inversion Algorithm. In addition, the results are going to show the possible systematic differences between the backscatter profiles calculated by both tools. A post-processing routine capable of generating graphs is going to be developed, assisting the instrumental tests results analysis, which is going to be able to organize the output data according to the LALINET or EARLINET standards for possible cooperation between these two networks.

MEMBROS DA BANCA:
Externo à Instituição - EDUARDO LANDULFO - IPEN
Externo à Instituição - FÁBIO JULIANO DA SILVA LOPES - IPEN
Presidente - 1879213 - JUDITH JOHANNA HOELZEMANN
Interno - 157.613.028-29 - MARIA PAULETE PEREIRA MARTINS - INPE