| DOI: | 10.1029/2012GB004413
|
| Scopus记录号: | 2-s2.0-84881058009
|
| 论文题名: | Decadal changes in dissolved inorganic carbon in the Pacific Ocean |
| 作者: | Kouketsu S; , Murata A; , Doi T
|
| 刊名: | Global Biogeochemical Cycles
|
| ISSN: | 8866236
|
| 出版年: | 2013
|
| 卷: | 27, 期:1 | | 起始页码: | 65
|
| 结束页码: | 76
|
| 语种: | 英语
|
| 英文关键词: | anthropogenic CO2
; carbon cycling
; ocean circulation
|
| Scopus关键词: | anthropogenic CO2
; Carbon cycling
; Dissolved inorganic carbon
; Distribution patterns
; Ocean circulation
; Oceanic uptake of anthropogenic co
; Redistribution process
; Subtropical regions
; Carbon
; Oceanography
; Tropics
; Carbon dioxide
; anthropogenic source
; carbon cycle
; carbon dioxide
; data set
; decadal variation
; dissolved inorganic carbon
; thermocline
; Pacific Ocean
|
| 英文摘要: | Using high-quality data sets obtained about a decade apart, we examined the changes of dissolved inorganic carbon in the Pacific Ocean, separating anthropogenic and natural CO2. Observations along three transoceanic sections along 47°N, 179°E, and 17°S showed both decadal increases (>20 μmol kg-1) and decreases (<-20 μmol kg-1) of anthropogenic CO2 in thermocline waters. As a result, the decadal-scale storage of anthropogenic CO2 north of 40°N in the North Pacific was close to ±0 mol m-2 a-1, except in the western subarctic Pacific. In contrast, in subtropical regions of both hemispheres, we found an increasing trend of >10 μmol kg-1 in oceanic uptake of anthropogenic CO2, reflecting accumulation in mode waters. Along 17°S, increases of anthropogenic CO2 were >20 μmol kg-1, larger than expected from increases of anthropogenic CO2 in the atmosphere. The annual water-column inventories of anthropogenic CO2 changes calculated in 20° longitudinal or 10° latitudinal bands throughout the Pacific Ocean revealed relatively high values (>0.7 mol m-2 a-1) in the subtropical regions of both hemispheres and low values in the tropical Pacific. This distribution pattern is similar to previous estimates for the Anthropocene, implying that the redistribution processes of anthropogenic CO2 have not changed on a basin scale over the last decade. We estimated the total anthropogenic and natural CO2 storage in the Pacific Ocean to be 8.4 ± 0.5 and 0.6 ± 0.4 Pg carbon decade-1, respectively. ©2012. American Geophysical Union. All Rights Reserved. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/77631
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan
|
| Recommended Citation: | |
Kouketsu S,, Murata A,, Doi T. Decadal changes in dissolved inorganic carbon in the Pacific Ocean[J]. Global Biogeochemical Cycles,2013-01-01,27(1)
|
|
|