EPJ Web of Conferences (Jan 2018)

Detection of saharan mineral dust aerosol transport over brazilian northeast through a depolarization lidar

  • Guedes Anderson G.,
  • Landulfo Eduardo,
  • Montilla-Rosero Elena,
  • Lopes Fábio J.S.,
  • Hoelzemann Judith J.,
  • Fernandez José Henrique,
  • Silva Marcos P. A.,
  • Santos Renata S. S.,
  • Guerrero-Rascado Juan L.,
  • Alados-Arboledas Lucas

DOI
https://doi.org/10.1051/epjconf/201817605036
Journal volume & issue
Vol. 176
p. 05036

Abstract

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In this study we present results of linear volume depolarization ratio profiles obtained by a depolarization lidar in operation in Natal, Brazil. The DUSTER system has 4 channels, namely: 1064, 532 s/p and 355 nm. This system is calibrated with a half-wave plate using the Δ90° methodology. The data obtained from this system is correlated with AERONET sunphotometer data, and, when available, CALIPSO satellite data. In addition a trajectory model (HYSPLIT) is used to calculate backward trajectories to assess the origin of the dust polluted air parcels. The objective is to create a transport database of Saharan dust.