Chlorophyll Control of Surface Temperature in the Arabian Sea

Material type: 文書・図像類

Author: FROUIN, Robertほか

Publisher: Chiba University. Center for Environmental Remote Sensing

Publication date: 1999-12-13

Material Format: Digital

Capacity, size, etc.: -

NDC: 452

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Note (General)：: type:text[ABSTRACT] A general ocean circulation model is used to investigate the effect of solar radiation absorption by phytoplankton on surface temp...

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Material Type: 文書・図像類
Title: Chlorophyll Control of Surface Temperature in the Arabian Sea
Author/Editor: FROUIN, Robert
NAKAMOTO, S.
Author Heading: FROUIN, Robert
NAKAMOTO, S.
Publication, Distribution, etc.: Chiba University. Center for Environmental Remote Sensing
Publication Date: 1999-12-13
Publication Date (W3CDTF): 1999-12-13
Periodical title: Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
No. or year of volume/issue: 6
Volume: 6
Pages: 72-72
Text Language Code: eng
NDC: 452
468
Target Audience: 一般
Note (General): type:text
[ABSTRACT] A general ocean circulation model is used to investigate the effect of solar radiation absorption by phytoplankton on surface temperature. The model, an updated version of Oberhuber's (1993) OPYC model, solves primitive equations, uses isopycnals as Lagrangian vertical coordinates, and includes a fully coupled mixed layer. The vertical profile of heating rate is parameterized as a function of remotely-sensed chlorophyll concentration. The model is run for 50 years without chlorophyll (control run) and an additional 10 years with chlorophyll (experimental run). The difference between experimental and control runs gives the biological effect. In January, sea surface temperature anomalies are positive in the northern hemisphere and negative in the southern hemisphere. In July, the opposite result is obtained. This suggests that, on a global scale, phytoplankton acts at moderating meridional temperature gradients. In the Arabian Sea, along a zonal strip centered at 20N, positive anomalies reaching 0.6K appear twice a year, from March through June and from September through November, and are associated with the two maxima of solar radiation over the annual cycle. The anomalies are smaller by 0.2K during the fall inter-monsoon season despite a 5-fold increase in chlorophyll abundance, because of reduced solar radiation. Increased chlorophyll during the southwest monsoon causes surface warming and sub-surface cooling consistent with JGOFS observations during the 1994-1995 Arabian Sea experiment.
Format (IMT): application/pdf
Source: https://opac.ll.chiba-u.jp/da/curator/900022468/C-25_19.pdf
https://opac.ll.chiba-u.jp/da/curator/900022468/C-25_19.pdf
Access Restrictions: 限定公開
Related Material (NCID): BA56719268
https://ci.nii.ac.jp/ncid/BA56719268
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 千葉大学 : 千葉大学学術成果リポジトリ