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 33, issue 4, October-December 2020, Claudio Mario Amescua García, 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.