Long‐Term Slowdown of Ocean Carbon Uptake by Alkalinity Dynamics

Chikamoto, Megumi O.; DiNezio, Pedro; Lovenduski, Nicole

doi:10.1029/2022gl101954

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Long‐Term Slowdown of Ocean Carbon Uptake by Alkalinity Dynamics

2023
By Chikamoto, Megumi O. ; DiNezio, Pedro ; Lovenduski, Nicole
Source: Geophysical Research Letters, 50(4)

[PDF-1.18 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Chikamoto, Megumi O. ; DiNezio, Pedro ; Lovenduski, Nicole

Chikamoto, Megumi O. ; DiNezio, Pedro ; Lovenduski, Nicole Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

Oceanic absorption of atmospheric carbon dioxide (CO2) is expected to slow down under increasing anthropogenic emissions; however, the driving mechanisms and rates of change remain uncertain, limiting our ability to project long-term changes in climate. Using an Earth system simulation, we show that the uptake of anthropogenic carbon will slow in the next three centuries via reductions in surface alkalinity. Warming and associated changes in precipitation and evaporation intensify density stratification of the upper ocean, inhibiting the transport of alkaline water from the deep. The effect of these changes is amplified threefold by reduced carbonate buffering, making alkalinity a dominant control on CO2 uptake on multi-century
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(4)
DOI:

https://doi.org/10.1029/2022gl101954
ISSN:

0094-8276;1944-8007;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
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Main Document Checksum:

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urn:sha256:aa4be391a4df3606c9ef03b8d4175a74c795c5e0b09d43fd6d9dbf0cb16d82fd
Download URL:

https://repository.library.noaa.gov/view/noaa/52848/noaa_52848_DS1.pdf
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