Browsing by Autor "Eduardo Landulfo"

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ALINE/LALINET Network Status
(EDP Sciences, 2016) Eduardo Landulfo; Fábio Lopes; Gregori de Arruda Moreira; Márcia Talita Amorim Marques; Marcelo Osneide; Juan Carlos Antuña; René Estevan; Juan Luís Guerrero-Rascado; Lucas Alados‐Arboledas; Álvaro Bastidas
The Latin American Lidar Network, ALINE a.k.a LALINET is a federation lidar network established in 2008 which became a member of GALION/GAW program in 2013. Currently the network consists of 9 operational stations with the perspective of two more stations to be included. The network today covers more than 18 million Km2 and spans in latitude from -52° to 21° and in longitude from -78° to -47°. It should cover a larger area in the future as planned with the inclusion of more active stations.
Lalinet Network Status
(EDP Sciences, 2020) Eduardo Landulfo; Albeth Rodríguez Vega; Alexandre Calzavara Yoshida; Álvaro Bastidas; Amanda Vieira dos Santos; Antonieta Silva; Antonio Arleques Gomes; Boris Barja González; Carlos A. Melo-Luna; Carlos D. Hoyos
LALINET (Latin American Lidar Network) follows its goal to consolidation as a federative lidar network to provide regional coverage over Latin America in providing aerosol and greenhouse gas profiles following QA/QC protocols and promoting the development of researchers and students in atmopheric science field. We show recent results on different approaches for studying the optical properties of the atmosphere regarding aerosols at tropospheric and stratospheric level and greenhouse gas mixing ratio profiles followed by our recent support and validation efforts towards present and future satellite missions.
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.
Latin American Lidar Network (LALINET) for aerosol research: Diagnosis on network instrumentation
(Elsevier BV, 2016) Juan Luís Guerrero-Rascado; Eduardo Landulfo; Juan Carlos Antuña; Henrique M. J. Barbosa; Boris Barja; Álvaro Bastidas; Andrés Esteban Bedoya-Velásquez; R. Costa; René Estevan; Ricardo Forno
Lidar Observations in South America. Part I - Mesosphere and Stratosphere
(IntechOpen, 2021) Eduardo Landulfo; Alexandre Cacheffo; Alexandre Calzavara Yoshida; Antonio Arleques Gomes; Fábio Lopes; Gregori de Arruda Moreira; Jonatan João da Silva; V. F. Andrioli; A. A. Pimenta; Chi Wang
South America covers a large area of the globe and plays a fundamental function in its climate change, geographical features, and natural resources. However, it still is a developing area, and natural resource management and energy production are far from a sustainable framework, impacting the air quality of the area and needs much improvement in monitoring. There are significant activities regarding laser remote sensing of the atmosphere at different levels for different purposes. Among these activities, we can mention the mesospheric probing of sodium measurements and stratospheric monitoring of ozone, and the study of wind and gravity waves. Some of these activities are long-lasting and count on the support from the Latin American Lidar Network (LALINET). We intend to pinpoint the most significant scientific achievements and show the potential of carrying out remote sensing activities in the continent and show its correlations with other earth science connections and synergies. In Part I of this chapter, we will present an overview and significant results of lidar observations in the mesosphere and stratosphere. Part II will be dedicated to tropospheric observations.
Lidar Observations in South America. Part II - Troposphere
(IntechOpen, 2021) Eduardo Landulfo; Alexandre Cacheffo; Alexandre Calzavara Yoshida; Antonio Arleques Gomes; Fábio Lopes; Gregori de Arruda Moreira; Jonatan João da Silva; V. F. Andrioli; A. A. Pimenta; Chi Wang
In Part II of this chapter, we intend to show the significant advances and results concerning aerosols’ tropospheric monitoring in South America. The tropospheric lidar monitoring is also supported by the Latin American Lidar Network (LALINET). It is concerned about aerosols originating from urban pollution, biomass burning, desert dust, sea spray, and other primary sources. Cloud studies and their impact on radiative transfer using tropospheric lidar measurements are also presented.
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.
Towards an instrumental harmonization in the framework of LALINET: dataset of technical specifications
(SPIE, 2014) Juan Luís Guerrero-Rascado; Eduardo Landulfo; Juan Carlos Antuña; Henrique M. J. Barbosa; Boris Barja; Álvaro Bastidas; Andrés Esteban Bedoya-Velásquez; R. Costa; René Estevan; Ricardo Forno
The Latin American Lidar Network (LALINET) is the aerosol lidar network operating over South America. LALINET is now an operative network performing a schedule of routine measurements and, currently, is composed by 9 stations distributed over South America. The main objective of LALINET is to generate a consistent and statistically relevant database to enhance the understanding of the particle distribution over the continent and its direct and indirect influence on climate. The creation of an un-biased spatiotemporal database requires a throughout review of the network on two pillars: instrumentation and data processing. Because most of the LALINET systems are not series-produced instruments and, therefore, present large differences in configuration and capabilities, attempts for network harmonization and, consequently, optimization are mandatory. In this study a review of the current instrumental status of all LALINET systems is done and analyzed in detail in order to assess the potential performance of the network and to detect networking weaknesses.