evidence: The formation and composition of the Mount Everest plume in winter [...] To our knowledge there is no systematic imaging of the Everest massif from either Nepal or Tibet (China). (Note: Anonymous reviewer, personal communication, 2022, informed us of a live-stream of the massif from the HEV (https://www.youtube.com/watch?v=O7ozpVbakZg, last access: 13 June 2022). The stream was not useful for this study because it began in January 2022). Therefore, daily we observed in real time, every 10 min, images of the Everest region during winter 2020–2021 (1 November through 31 March). Observed were Band 3 (visible) and Band 13 (infrared) from the Himawari-8 (H-8) Japanese geosynchronous meteorological satellite (https://www.data.jma.go.jp/mscweb/data/himawari/sat_img.php?area=ha2, last access: 3 June 2022).