Squall line in the Amazon region and the transport of gas near the surface during the occurrence of downdraft

Authors

DOI:

https://doi.org/10.5902/2179460X81657

Keywords:

Downdraft, Gases, Amazon

Abstract

The squall lines (LI) are one of the most frequent atmospheric systems in the Amazon and in the north of Northeast Brazil. Can be interpreted as planned according to the planned regions and modified as the planned configuration terms for the corresponding regions. Its cause is related to the circulation of the sea breeze and the diurnal oscillation, and they are important for the transport of heat to the upper troposphere. Its maximum activity can be observed at night. In tropical regions, especially in the Amazon, deep convection events are closely related to the occurrence of updrafts and downdrafts of air. As offspring, known as downdrafts, originate at higher levels, and are composed of layer of dense air that spreads out into the ground as a “cold pool compound” shifted to changes in wind direction near the ground. Downdraft is the link between deep convection and the sources and sinks of trace gases such as (O3) and (CO2).

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Author Biographies

Gilmar Henrique Santana da Silva, Federal University of Para

Graduated in Degree in Physics - Qualification: Degree in Physics by the Federal Institute of Education, Science and Technology of Pará (IFPA), Campus Belém. Researching convective activities in the Amazon region, with emphasis on thermodynamic indicators, wind shear and gas transport from the middle troposphere to the surface, during deep convection/downdraft events.

Cléo Quaresma Dias Junior, Federal Institute of Pará

Graduated in PHYSICS from the Federal University of Pará (2005), MSc in Environmental Sciences from the Federal University of Pará (2008) and PhD in Climate and Environment from the National Institute for Research in the Amazon (2015). During his doctorate he did an internship at the Karlsruhe Institute of Technology (KIT - Germany). He is currently a professor at the Federal Institute of Education, Science and Technology of Pará. He has experience in Geosciences, with emphasis on Micrometeorology, working mainly on the following topics: Turbulent exchange processes at the forest-atmosphere interface; Large Eddy Simulation - LES; Transport of Energy and Matter during episodes of downdrafts, Estimates of the height of the Amazonian atmospheric boundary layer, mass and energy fluxes at the forest-atmosphere interface via turbulent eddies covariance. Since 2021 He is coordinator of the micrometeorology of the Observatório da Torre Alta da Amazônia (ATTO) project. He is a professor of the graduate programs in Climate and Environment (INPA) and Environmental Sciences (UFPA)

Júlia Clarinda Paiva Cohen, Federal University of Para

Graduated in Meteorology from the Federal University of Pará (1983), Master in Meteorology from the National Institute for Space Research (1988) and Ph.D. in Atmospheric Sciences from the University of São Paulo (1996), Post-Doc at the University of Albany - State University of New York (2008). She is a Professor at the Federal University of Pará, where she carries out her activities in the Meteorology Graduation course and in the Interinstitutional Post-Graduation Program (UFPA-MPEG-EMBRAPA) with an interdisciplinary focus. He develops research on mesoscale convective systems, as well as being interested in studies that analyze the role of deforestation on local circulations and convective systems.

Stefan Aiko Wolff, Max Planck Institute for Chemistry

Master in meteorology - Leibniz Universitat Hannover (2007). He is currently a doctoral candidate in the Climate and Environment program (CLIAMB) at the National Institute for Research in the Amazon (INPA)

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Published

2023-11-22

How to Cite

Silva, G. H. S. da, Dias Junior, C. Q., Cohen, J. C. P., & Wolff, S. A. (2023). Squall line in the Amazon region and the transport of gas near the surface during the occurrence of downdraft. Ciência E Natura, 45(esp. 2), e81657. https://doi.org/10.5902/2179460X81657

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