Cold-core rings

From Glossary of Meteorology

cold-core rings

Large (roughly 300-km diameter) cyclonically rotating eddies found in the Sargasso Sea, containing cold Slope Water in their cores.

They persist for several months, occasionally interacting with the Gulf Stream and getting destroyed in the process. A cold-core ring is formed from a large-amplitude Gulf Stream meander that pinches off to the south, trapping relatively cold Slope Water from north of the Gulf Stream within its circumferential current.
See also warm-core rings, Gulf Stream rings.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact [email protected]. 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.