European Facility For Airborne Research

European Facility For Airborne Research Aug. 15, 2018, 11:41

Document

Description
Title Properties of dust aerosol particles transported to Portugal from the Sahara desert
Type Publication
Abstract:

Aerosol properties of mineral particles in the far field of an African desert dust outbreak were investigated that brought Saharan dust over the Mediterranean in different layers to Portugal. The measurements were performed inside the project Desert Aerosols over Portugal (DARPO) which was linked to the Saharan Mineral Dust Experiment (SAMUM). The maximum particle mass concentration was about 150 μg m−3 and the corresponding scattering coefficient was 130 M m−1 which results in a mass scattering efficiency of 0.87 m2 g−1. The aerosol optical depth reached values up to 0.53 and the lidar ratio was between 45 and 50 in the whole dust loaded column. A comparison between particle size distributions and refractive indices derived from different instruments and models showed a general good agreement but some minor differences could also be observed. Measurements as well as calculations with a particle transport model suggest that there is a relatively higher concentration of very large particles in the upper region of the dust layer than on the surface which is likely connected with meteorological conditions at the observational site (Évora, Portugal).

Available from http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2008.00393.x/abstract
Author
BORTOLI Daniele
COSTA Maria Joao
PEREIRA NEPOMUCENO Sergio
PETZOLD Andreas
SILVA Ana maria
TEGEN Ina
WAGNER Frank
WEINZIERL Bernadett
M. Esselborn, K. Rasp, B. Heinold
Reference
Journal Tellus B
Volume 61
Pages 297-306
Year 2009
Times cited 0
Institute country Portugal
Type of science
  • Aerosol chemistry and physics
Field of science
  • Troposphere
File details
Added Dec. 19, 2008, 00:00
Last update April 28, 2016, 12:50
Size 566.8 KB
File name None
Visibility Public
Links with specific subjects

Go to the document list

Back to top
EUFAR
EU

This project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 312609

Copyright © 2018 EUFAR All rights reserved.