Resumen
I have the pleasure to introduce this new issue of Atmósfera which this year, its 33rd since being founded by Dr. Julian Adem, has once again started publishing systematically 8 papers per number. In particular, in this issue we have the great fortune to share editing responsibilities with Dr. Luisa Molina, a well renowned and much celebrated scientist and editor. The papers edited by her relate to issues associated with emissions of greenhouse gases and to methodologies to estimate them in Latin America. These papers provide methods that are very relevant to accurately measure emissions that aid in the estimates of national inventories and provide better tools for designing mitigation strategies. We are very grateful to Dr. Molina for her time and expertise in editing the manuscripts received on the topic.