Conceitos e métodos da transferência de gases na interface água-ar (Concepts and methods of gas transfer in air-water interface)
DOI:
https://doi.org/10.5935/1984-2295.20150064Keywords:
fluxo de gases, velocidade de transferência, interface água-ar.Abstract
Estudos relacionados com fluxo de gases na interface água-ar tem recebido a atenção da comunidade científica nas últimas décadas. Os primeiros estudos foram iniciados em túneis de vento e logo depois levados para o campo. Os oceanos foram o primeiro alvo de estudo, devido seu papel fundamental no ciclo global do carbono. No entanto, estudos realizados em águas interiores revelaram que estes ambientes desempenham, também, um papel importante no ciclo regional e global do carbono. O avanço nos estudos levou a um melhor entendimento dos processos que controlam a transferência de gás e das estimativas de fluxo na interface água-ar. Este trabalho reúne, dentro de um contexto histórico, os principais e mais relevantes estudos relacionados à transferência de gases na interface água-ar. Esta revisão aborda princípios fundamentais de transferência gasosa na interface água-ar e avanços na teoria de transferência de gases, modelos e técnicas de medição. Com base nesses estudos, apresentamos os conceitos e processos envolvidos no cálculo da velocidade de transferência gasosa e dos fluxos de gases.
Palavras-chave: fluxo de gases, velocidade de transferência e interface água-ar.
A B S T R A C T
Studies related to gas fluxes at the water-air interface have been examined by the scientific community during the last decades. Firstly, studies were initiated in wind tunnels and, then, were carried out in the field. The oceans were the first place of study, due to its fundamental role on the global carbon cycle. However, investigations carried out in the continental waters have shown that these environments also have an important role on regional and global carbon cycles. Advances in this topic of research led to a better understanding of the processes that control the gas transfer, which improved the estimates of fluxes at the interface water-air. In a historic context, this study brings together the main and the most important studies related to gas transfer in the interface water-air. Based on these studies, we attempt to show, clearly, the concepts and processes involved in the calculation of the transfer velocity and gas fluxes. This review discusses the fundamental principles of gas transfer at the interface water-air and the advances in the theory of gas transfer, models and techniques of measurements.
Keywords: gas fluxes, transfer velocity and air-water interface.
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Copyright (c) 2016 Roseilson Souza Vale, Eliane Gomes Alves, Raoni Aquino Santana, Julio Totta, Rodrigo Souza, Scott Miller
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