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タイトル
  • en Reconstruction of sea surface dimethylsulfide in the North Pacific during 1970s to 2000s
作成者
    • en Yoshinari, H.
    • en Sakamoto, A.
    • en Nakano, Y.
    • en Kasamatsu, N.
    • en Midorikawa, T.
    • en Ono, T.
アクセス権 open access
主題
  • Other en Dimethylsulfide
  • Other en Algorithm
  • Other en Decadal change
  • Other en North Pacific
  • NDC 452
内容注記
  • Abstract en 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.
出版者 en Elsevier
日付
    Issued2007-01-16
言語
  • eng
資源タイプ journal article
出版タイプ AM
資源識別子 HDL http://hdl.handle.net/2115/20390
関連
  • URI http://www.sciencedirect.com/science/journal/03044203
  • isVersionOf DOI https://doi.org/10.1016/j.marchem.2006.10.004
収録誌情報
    • PISSN 0304-4203
      • en Marine Chemistry
      • 巻103 号3-4 開始ページ347 終了ページ358
ファイル
    • fulltext MC103-3-4.pdf
    • 574.75 KB (application/pdf)
      • Issued2007-01-16
コンテンツ更新日時 2023-07-26