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DOI | 10.1029/2019GL083149 |
Dissolved Organic Radiocarbon in the Central Pacific Ocean | |
Druffel, Ellen R. M.1; Griffin, Sheila1; Wang, Ning1,2; Garcia, Noreen G.1; McNichol, Ann P.3; Key, Robert M.4; Walker, Brett D.1,5 | |
2019-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:10页码:5396-5403 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Canada |
英文摘要 | We report marine dissolved organic carbon (DOC) concentrations, and DOC Delta C-14 and delta C-13 values in seawater collected from the central Pacific. Surface Delta C-14 values are low in equatorial and polar regions where upwelling occurs and high in subtropical regions dominated by downwelling. A core feature of these data is that 14 C aging of DOC (682 +/- 86 14 C years) and dissolved inorganic carbon (643 +/- 40 C-14 years) in Antarctic Bottom Water between 54.0 degrees S and 53.5 degrees N are similar. These estimates of aging are minimum values due to mixing with deep waters. We also observe minimum Delta C-14 values (-550%0 to - 570%0) between the depths of 2,000 and 3,500 m in the North Pacific, though the source of the low values cannot be determined at this time. Plain Language Summary Most of the organic carbon in ocean water is in the dissolved form, like the broth in chicken soup. Even though it is believed that dissolved organic carbon (DOC) is formed during photosynthesis in the surface ocean using modern carbon, its radiocarbon age is surprisingly thousands of years old. We present the first transect of radiocarbon in DOC for the Pacific Ocean. We find that the radiocarbon age of DOC in the bottom waters decreases similarly to that found in the more abundant dissolved inorganic carbon. We conclude that DOC ages in the bottom water as it flows northward toward Alaska. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471237500043 |
WOS关键词 | TEMPORAL VARIABILITY ; CARBON ; SAMPLES ; MATTER ; EXTRACTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183406 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Guangdong, Peoples R China; 3.Woods Hole Oceanog Inst, Natl Ocean Sci Accelerator Mass Spectrometry, Woods Hole, MA 02543 USA; 4.Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA; 5.Univ Ottawa, Dept Earth & Environm Sci, Ottawa, ON, Canada |
推荐引用方式 GB/T 7714 | Druffel, Ellen R. M.,Griffin, Sheila,Wang, Ning,et al. Dissolved Organic Radiocarbon in the Central Pacific Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(10):5396-5403. |
APA | Druffel, Ellen R. M..,Griffin, Sheila.,Wang, Ning.,Garcia, Noreen G..,McNichol, Ann P..,...&Walker, Brett D..(2019).Dissolved Organic Radiocarbon in the Central Pacific Ocean.GEOPHYSICAL RESEARCH LETTERS,46(10),5396-5403. |
MLA | Druffel, Ellen R. M.,et al."Dissolved Organic Radiocarbon in the Central Pacific Ocean".GEOPHYSICAL RESEARCH LETTERS 46.10(2019):5396-5403. |
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