Green rim

From Glossary of Meteorology

green rim

(Also called green segment.) The upper rim of the low sun usually displays a green rim.

The transient sighting of this rim, between its obscuration by the rest of the sun and its obstruction by the horizon, is sometimes credited with being the origin of the green flash. But, while the color of the flash is provided by the green rim, the size and transient nature has more to do with multiple-image mirages.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.