Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean
Liu, Na; Zeng, Lili; Li, Yizhen; Xiu, Peng; pxiu@scsio.ac.cn
2015
发表期刊GEO-MARINE LETTERS
卷号35期号:2页码:119-133
文章类型0276-0460
摘要The newly built CoSiNE-31 ecosystem model developed for the Pacific Ocean is employed here to evaluate carbon cycling in the equatorial Pacific upwelling region. This model explicitly includes 31 state variables capable of reproducing key biogeochemical features in this region, such as high-nutrient low-chlorophyll conditions. In the so-called Wyrtki Box (5A degrees S-5A degrees N, 90-180A degrees W), the modeled area-averaged carbon export data show the predominance of the particulate organic carbon flux. This is consistent with observations, and amounts to 7.88 mmol C m(-2) day(-1) at the bottom of the euphotic zone (120 m water depth). Nearly as important is the dissolved organic carbon export flux, at 6.62 mmol C m(-2) day(-1). The modeled particulate inorganic carbon (PIC) export flux of 2.07 mmol C m(-2) day(-1) is much higher than the global average, indicating a key role of PIC sedimentation in the study region. The modeled carbon-to-nitrogen export ratio for particulate organic matter (POM) is 7.8, which is consistent with the Redfield ratio. The export ratio increases to 13.8 for dissolved organic matter (DOM). By implication, carbon export is markedly more efficient via DOM than via POM. This is the case also under simulated iron enrichment conditions, although there are measurable increases in carbon export efficiency for both DOM and POM.
部门归属[Liu, Na; Zeng, Lili; Xiu, Peng] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Li, Yizhen] Woods Hole Oceanog Inst, Appl Ocean Phys & Engn, Woods Hole, MA 02543 USA ; LTO
学科领域Geology ; Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15108
专题热带海洋环境国家重点实验室(LTO)
通讯作者pxiu@scsio.ac.cn
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GB/T 7714
Liu, Na,Zeng, Lili,Li, Yizhen,et al. Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean[J]. GEO-MARINE LETTERS,2015,35(2):119-133.
APA Liu, Na,Zeng, Lili,Li, Yizhen,Xiu, Peng,&pxiu@scsio.ac.cn.(2015).Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean.GEO-MARINE LETTERS,35(2),119-133.
MLA Liu, Na,et al."Modeling dissolved organic carbon and carbon export in the equatorial Pacific Ocean".GEO-MARINE LETTERS 35.2(2015):119-133.
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