Abstract
Através da erosão eólica, toneladas de poeiras minerais são carreadas para a atmosfera, interferindo no balanço radiativo terrestre, ciclos biogeoquímicos, padrões de precipitação, saúde humana e a poluição do ar. Face às mudanças climáticas que podem alterar estes mecanismos e padrões, é necessário a ampliação deste conhecimento e, portanto, apresentamos as principais ferramentas utilizadas no estudo de poeira mineral, seja por coleta in situ ou através de fotômetros solares, como o Microtops II. Apresentamos ainda a determinação da proveniência através da assinatura isotópica de estrôncio e neodímio, bem como a modelagem atmosférica, pelo sistema HYSPLIT, mostrando as procedências dos aerossóis. Exemplos de transporte intercontinental são reportados no presente e no passado, pois a conjunção dos dados pretéritos e atuais podem preencher lacunas quanto ao clima. Pretendemos que este estado da arte contribua para a divulgação do conhecimento e, principalmente, oferecer potencialidades para o desenvolvimento de projetos de pesquisa sobre aerossóis.
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