气候变化领域集成服务门户(CCPortal): Precipitation-Induced Reduction in Surface Ocean pCO2: Observations From the Eastern Tropical Pacific Ocean

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DOI	10.1029/2020GL088252
	Precipitation-Induced Reduction in Surface Ocean pCO2: Observations From the Eastern Tropical Pacific Ocean
	Ho D.T.; Schanze J.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Determining air-sea CO2 fluxes using pCO2 disequilibrium requires knowing the gas transfer velocity and air-sea pCO2 difference. Most pCO2 measurements are made from ships, whose uncontaminated seawater intakes are located at >5-m depth to prevent ingestion of air. However, there could be bias in determinations of CO2 fluxes if there is disagreement between pCO2 measurements at the surface and 5 m. Seawater measurements made at the near surface and 5 m in the eastern Equatorial Pacific Ocean show that precipitation can dilute surface seawater salinity and lower the pCO2 and dissolved inorganic carbon and raise pH of the same water, and that these changes in ocean chemistry are largely missed by measurements at 5 m. This finding implies that estimates of ocean CO2 uptake might be underestimated, since rain will lower surface ocean pCO2 in both source and sink regions and, hence, increase uptake in sink regions and decrease outgassing in source regions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Air; Air intakes; Carbon dioxide; Seawater; Tropics; Dissolved inorganic carbon; Eastern equatorial Pacific; Eastern tropical pacific; Ocean chemistry; Seawater intakes; Source and sink; Source region; Surface seawater; Oceanography; air-sea interaction; carbon dioxide; gas transport; inorganic carbon; precipitation (climatology); seawater; Pacific Ocean; Pacific Ocean (Tropical)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169968
作者单位	Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, HI, United States; Earth and Space Research, Seattle, WA, United States
推荐引用方式 GB/T 7714	Ho D.T.,Schanze J.J.. Precipitation-Induced Reduction in Surface Ocean pCO2: Observations From the Eastern Tropical Pacific Ocean[J],2020,47(15).
APA	Ho D.T.,&Schanze J.J..(2020).Precipitation-Induced Reduction in Surface Ocean pCO2: Observations From the Eastern Tropical Pacific Ocean.Geophysical Research Letters,47(15).
MLA	Ho D.T.,et al."Precipitation-Induced Reduction in Surface Ocean pCO2: Observations From the Eastern Tropical Pacific Ocean".Geophysical Research Letters 47.15(2020).