The Fate of Ocean Alkalinity: Carbonate Formation and Reverse Weathering Reactions Journal Article uri icon

Overview

abstract

  • T he ocean’s buffering capacity, or alkalinity, regulates the amount of atmospheric CO2 the ocean can sequester. Typically, it is assumed that the formation of carbonate minerals is the only sink for ocean alkalinity. However, in recent years, the formation of alumino-silicate phases in the seabed via reactions that consume alkalinity and produce CO2 (reverse weathering) has been shown to be significant in the modern ocean and is thought to provide a control on the long-term C cycle. Evolutionary changes in the modes of carbonate production and the availability of certain seawater constituents are also important controls on CaCO3 formation beyond the flux of alkalinity into the ocean. Here we explore the links between biogeochemical cycles, seawater chemistry, and alkalinity sinks.

publication date

  • February 1, 2026

Date in CU Experts

  • February 17, 2026 2:28 AM

Full Author List

  • Rahman S; Trower EJ

author count

  • 2

Other Profiles

International Standard Serial Number (ISSN)

  • 1811-5209

Electronic International Standard Serial Number (EISSN)

  • 1811-5217

Additional Document Info

start page

  • 36

end page

  • 41

volume

  • 22

issue

  • 1