Characteristics of the surface water DMS and pCO(2) distributions and their relationships in the Southern Ocean, southeast Indian Ocean, and northwest Pacific Ocean

Type Article
Date 2017-08
Language English
Author(s) Zhang Miming1, Marandino C. A.2, Chen Liqi1, Sun Heng1, Gao Zhongyong1, Park Keyhong3, Kim Intae4, Yang Bo5, Zhu Tingting6, Yan Jinpei1, Wang Jianjun1
Affiliation(s) 1 : State Ocean Adm, Inst Oceanog 3, Key Lab Global Change & Marine Atmospher Chem, Xiamen, Peoples R China.
2 : GEOMAR Helmholtz Zentrum Ozeanforsch, Forsch Berech Marine Biogeochem, Kiel, Germany.
3 : Korea Polar Res Inst, Div Polar Ocean Sci, Incheon, South Korea.
4 : Korea Inst Ocean Sci & Technol, Marine Radionuclide Res Ctr, Ansan, South Korea.
5 : Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
6 : Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan, Hubei, Peoples R China.
Source Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2017-08 , Vol. 31 , N. 8 , P. 1318-1331
DOI 10.1002/2017GB005637
WOS© Times Cited 5
Abstract

Oceanic dimethyl sulfide (DMS) is of interest due to its critical influence on atmospheric sulfur compounds in the marine atmosphere and its hypothesized significant role in global climate. High-resolution shipboard underway measurements of surface seawater DMS and the partial pressure of carbon dioxide (pCO(2)) were conducted in the Atlantic Ocean and Indian Ocean sectors of the Southern Ocean (SO), the southeast Indian Ocean, and the northwest Pacific Ocean from February to April 2014 during the 30th Chinese Antarctic Research Expedition. The SO, particularly in the region south of 58 degrees S, had the highest mean surface seawater DMS concentration of 4.1 +/- 8.3 nM (ranged from 0.1 to 73.2 nM) and lowest mean seawater pCO(2) level of 337 +/- 50 mu atm (ranged from 221 to 411 mu atm) over the entire cruise. Significant variations of surface seawater DMS and pCO(2) in the seasonal ice zone (SIZ) of SO were observed, which are mainly controlled by biological process and sea ice activity. We found a significant negative relationship between DMS and pCO(2) in the SO SIZ using 0.1 degrees resolution, [DMS](seawater) = -0.160 [pCO(2)](seawater) + 61.3 (r(2) = 0.594, n = 924, p < 0.001). We anticipate that the relationship may possibly be utilized to reconstruct the surface seawater DMS climatology in the SO SIZ. Further studies are necessary to improve the universality of this approach.

Full Text
File Pages Size Access
Publisher's official version 14 1 MB Open access
Supporting Information S1 275 KB Open access
Data Set S1 684 KB Open access
Data Set S2 1 MB Open access
Top of the page

How to cite 

Zhang Miming, Marandino C. A., Chen Liqi, Sun Heng, Gao Zhongyong, Park Keyhong, Kim Intae, Yang Bo, Zhu Tingting, Yan Jinpei, Wang Jianjun (2017). Characteristics of the surface water DMS and pCO(2) distributions and their relationships in the Southern Ocean, southeast Indian Ocean, and northwest Pacific Ocean. Global Biogeochemical Cycles, 31(8), 1318-1331. Publisher's official version : https://doi.org/10.1002/2017GB005637 , Open Access version : https://archimer.ifremer.fr/doc/00661/77323/