HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Environmental Science / Faculty of Environmental Earth Science >
Peer-reviewed Journal Articles, etc >

Reconstruction of sea surface dimethylsulfide in the North Pacific during 1970s to 2000s

Files in This Item:
MC103-3-4.pdf574.75 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/20390

Title: Reconstruction of sea surface dimethylsulfide in the North Pacific during 1970s to 2000s
Authors: Watanabe, Y.W. Browse this author →KAKEN DB
Yoshinari, H. Browse this author
Sakamoto, A. Browse this author
Nakano, Y. Browse this author
Kasamatsu, N. Browse this author
Midorikawa, T. Browse this author
Ono, T. Browse this author
Keywords: Dimethylsulfide
Algorithm
Decadal change
North Pacific
Issue Date: 16-Jan-2007
Publisher: Elsevier
Journal Title: Marine Chemistry
Volume: 103
Issue: 3-4
Start Page: 347
End Page: 358
Publisher DOI: 10.1016/j.marchem.2006.10.004
Abstract: We proposed an empirical equation of sea surface dimethylsulfide (DMS, nM) using sea surface temperature (SST, K), sea surface nitrate (SSN, μM) and latitude (L, °N) to reconstruct the sea surface flux of DMS over the North Pacific between 25°N and 55°N: ln DMS = 0.06346 · SST − 0.1210 · SSN − 14.11 · cos(L) − 6.278 (R2 = 0.63, p < 0.0001). Applying our algorithm to climatological hydrographic data in the North Pacific, we reconstructed the climatological distributions of DMS and its flux between 25 °N and 55 °N. DMS generally increased eastward and northward, and DMS in the northeastern region became to 2–5 times as large as that in the southwestern region. DMS in the later half of the year was 2–4 times as large as that in the first half of the year. Moreover, applying our algorithm to hydrographic time series datasets in the western North Pacific from 1971 to 2000, we found that DMS in the last three decades has shown linear increasing trends of 0.03 ± 0.01 nM year− 1 in the subpolar region, and 0.01 ± 0.001 nM year− 1 in the subtropical region, indicating that the annual flux of DMS from sea to air has increased by 1.9–4.8 μmol m− 2 year− 1. The linear increase was consistent with the annual rate of increase of 1% of the climatological averaged flux in the western North Pacific in the last three decades.
Relation: http://www.sciencedirect.com/science/journal/03044203
Type: article (author version)
URI: http://hdl.handle.net/2115/20390
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡辺 豊

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 

 - Hokkaido University