Browsing by Autor "P. Ristori"

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Lalinet status - station expansion and lidar ratio systematic measurements
(EDP Sciences, 2018) Eduardo Landulfo; Fábio Lopes; Gregori de Arruda Moreira; Jonatan da Silva; P. Ristori; Eduardo Quel; Lidia Otero; J. Pallota; Milagros Herrera; Jacobo Salvador
LALINET is expanding regionally to guarantee spatial coverage over South and Central Americas. One of the network goals is to obtain a set of regional representative aerosol optical properties such as particle backscatter, extinction and lidar ratio. Given the North-South extension and influence of distinct airmass circulation patterns it is paramount to distinguish these optical parameters in order to gain better perfomance in radiation transfer models. A set of lidar ratio data is presented.
LALINET: The First Latin American–Born Regional Atmospheric Observational Network
(American Meteorological Society, 2016) Juan Carlos Antuña; Eduardo Landulfo; René Estevan; Boris Barja; Alan Robock; Elián Wolfram; P. Ristori; B. R. Clemesha; Francesco Zaratti; Ricardo Forno
Abstract Sustained and coordinated efforts of lidar teams in Latin America at the beginning of the twenty-first century have built the Latin American Lidar Network (LALINET), the only observational network in Latin America created by the agreement and commitment of Latin American scientists. They worked with limited funding but an abundance of enthusiasm and commitment toward their joint goal. Before LALINET, there were a few pioneering lidar stations operating in Latin America, described briefly here. Biannual Latin American lidar workshops, held from 2001 to the present, supported both the development of the regional lidar community and LALINET. At those meetings, lidar researchers from Latin America met to conduct regular scientific and technical exchanges among themselves and with experts from the rest of the world. Regional and international scientific cooperation has played an important role in the development of both the individual teams and the network. The current LALINET status and activities are described, emphasizing the processes of standardization of the measurements, methodologies, calibration protocols, and retrieval algorithms. Failures and successes achieved in the buildup of LALINET are presented. In addition, the first LALINET joint measurement campaign and a set of aerosol extinction profile measurements obtained from the aerosol plume produced by the Calbuco volcano eruption on 22 April 2015 are described and discussed.
South American Aerosol Tracking - LALINET
(EDP Sciences, 2018) Eduardo Landulfo; Fábio Lopes; P. Ristori; Eduardo Quel; Lidia Otero; Ricardo Forno; Maria Fernanda Sanchez Barrero; Henrique M. J. Barbosa; Diego Alvés Gouveia; Amanda Vieira dos Santos
LALINET lidar stations were used to track down aerosols generated over Amazon region and transported over the continent. These data were merged with collocated Aeronet stations in order to help in their identification together with HYSPLIT simulations. The results show potential indication of how aerosol can age in their long transport over regions South and Westward from the source areas by change of their optical properties.