Publication Date:
2022-05-25
Description:
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 44 (2017): 5627–5636, doi:10.1002/2017GL073814.
Description:
Variability and change in the ocean sink of anthropogenic carbon dioxide (CO2) have implications for future climate and ocean acidification. Measurements of surface seawater CO2 partial pressure (pCO2) and wind speed from moored platforms are used to calculate high-resolution CO2 flux time series. Here we use the moored CO2 fluxes to examine variability and its drivers over a range of time scales at four locations in the Pacific Ocean. There are significant surface seawater pCO2, salinity, and wind speed trends in the North Pacific subtropical gyre, especially during winter and spring, which reduce CO2 uptake over the 10 year record of this study. Starting in late 2013, elevated seawater pCO2 values driven by warm anomalies cause this region to be a net annual CO2 source for the first time in the observational record, demonstrating how climate forcing can influence the timing of an ocean region shift from CO2 sink to source.
Description:
NOAA, OAR, CPO, OOMD Grant Number: 100007298;
NOAA, OAR, CPO, OOMD Grant Number: NA09OAR4320129;
Ocean Observation and Monitoring Division (OOMD) Grant Number: NA09OAR4320129;
National Oceanic and Atmospheric Administration (NOAA) Grant Number: 100007298
Description:
2017-12-12
Keywords:
Sea-air CO2 flux
;
Surface ocean pCO2
;
Ocean carbon
;
Anthropogenic change
Repository Name:
Woods Hole Open Access Server
Type:
Article
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