MARCIA TALITA AMORIM MARQUES

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    Artigo IPEN-doc 22797
    Estimation of turbulence production by nocturnal low-level jets in Sao Paulo (Brazil)
    2016 - BEU, CASSIA M.L.; MARQUES, MARCIA T.A.; NAKAEMA, WALTER M.; SAKAGAMI, YOSHIAKI; SANTOS, PEDRO A.A.; MOREIRA, A.C. de C.A.; LANDULFO, EDUARDO
    Two Doppler lidars were recently used to collect data from the planetary boundary layer (PBL) in Sao Paulo city (23º32’S, 46 º38’W). The measurement campaign was carried out from December-2015 to February-2016, during the summer, which is the rainy season. Although Sao Paulo is the main city of a huge metropolitan region with more than 11 million of inhabitants and 7 millions of vehicles, according to the government agencies, the lack of PBL observational data is still a limitation for the atmospheric dispersion studies. Therefore, this work should contribute to the comprehension of PBL mechanisms and also for future atmospheric modeling studies. The data revealed that the nocturnal low-level jets (LLJs) frequently occurred along those 3 months, but its height is highly variable, from 100 m up to 650 m. It was also seen that the nocturnal LLJs can extend for several hours, right before the sunset until sunrise. This work aims to investigate the turbulence production by the nocturnal LLJs and its influence into the stable boundary layer (SBL).
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    Artigo IPEN-doc 20458
    The first brazilian field lab fully dedicated to CO2 MMV experiments
    2014 - MOREIRA, ANDREA C. de C.A.; LANDULFO, EDUARDO; NAKAEMA, WALTER M.; MARQUES, MARCIA T.A.; MEDEIROS, JOSE A.G.; MUSSE, ANA P.S.; ROSARIO, FATIMA do; SPANGLER, LEE H.; DOBECK, LAURA M.
    The first CO2 Field Lab built in Brazil was developed at the Ressacada Farm, in Florianopolis, SC with the goal of diminishing technical gaps in CO2 storage covering research in Measuring, Monitoring and Verification (MMV) techniques, a need identified in the PETROBRAS Strategic Plan. Through the Company R&D Center (CENPES), and the Climate Change Mitigation Technological Program (PROCLIMA), PETROBRAS is sponsoring a joint 4-year research Project, in which both company and local academia personnel are collaborating to deploy, test and assess multiple near-surface CO2 detection technologies. Longer term objectives include the validation of accurate and efficient detection, measurement and quantification tools to be deployed in large scale commercial CGS (Carbon Geological Storage) sites scheduled to be installed in the country to assist in validating storage efficiency and minimizing risk. In September 2013, the first CO2 injection campaign was carried out, in which small volumes of gaseous food-grade industrial CO2 (with a delta 13C signature of ca.-32 ppmil) were injected into the ground at shallow levels through a vertical 3 m depth well and then migrated into the atmosphere. The campaign was run over 12 days, for 24 hours a day, at injection rates low enough not to offer any risks to the formation integrity and enabled the simultaneous assessment of CO2 behavior in the soil, in the groundwater, at the surface and in the air. This paper presents an overview of the atmospheric measurements carried out at Ressacada, covering the background, injection and post-injection scenarios.