Atmósfera is a quarterly journal published by the Universidad Nacional Autónoma de México via the Centro de Ciencias de la Atmósfera, Circuito de la Investigación Científica s/n, Ciudad Universitaria, Delegación Coyoacán, 04510, Mexico City, Mexico. Phone number (+52 55) 5622-4240, ext. 81888, https://www.revistascca.unam.mx/atm, ISSN 2395-8812. Editor in Chief: Graciela B. Raga, editora@atmosfera.unam.mx. Person in charge of the last update corresponding to volume 34, issue 2, April 2021, Graciela Raga, Editorial Office of the Centro de Ciencias de la Atmósfera, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510, Mexico City, Mexico. Last modification: April 1, 2020. The views expressed by the authors do not necessarily reflect the viewpoint of the Editor or the publisher. Reproduction of this work (or sections thereof) for non-commercial purposes is permitted, as long as the source is provided and acknowledged.