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学科主题: Marine & Freshwater Biology ; Oceanography
题名: Temporal variability of temperature-nitrate relationship in a coastal region
作者: Yin, JP ; Lin, L ; Wang, YS ; Du, JW
通讯作者: yjp@scsio.ac.cn
关键词: sea surface temperature ; sea surface nitrate ; nitrate and temperature (N-T relationship) model ; Halifax ; Canada
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2014
卷: 32, 期:4, 页:879-885
收录类别: sci
部门归属: [Yin Jianping ; Lin Li ; Wang Youshao] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China ; [Yin Jianping ; Lin Li] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Du Jianwei] Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China
项目归属: LTO
资助者: Knowledge Innovation Program of Chinese Academy of Sciences [KZCX2-YW-Q07-02, KSCX2-SW-132]; Project of Knowledge Innovation Program of South China Sea Institute of Oceanology [LYQ200701]; Special Grant for Postgraduate Research, Innovation and Practice, Chinese Academy of Sciences [52920-104]
摘要: The inverse relationship between nitrate and temperature (N-T relationship) has been used to estimate new production from remotely sensed sea surface temperature at the regional or global scale of oceans. This study aimed to develop a time-series model of the N-T relationship from automated, continuous hourly observations over two years on the coast of Halifax, Canada. The model demonstrated time-series variability of the N-T relationship at a coastal station on the Nova Scotia Shelf, with adjusted R-2=0.999 4 and RMSE=0.025 7. The maximum residual value was 0.077. The annual temperature variations described a sine curve, and daily, weekly, and monthly variations fluctuated within the normal ranges, controlled by the local climate. The annual variation of nitrate concentration formed nearly a sine curve. Heavy or long-lasting rainfall increased nitrate concentration by 4 to 30-fold in 24 h, and then the increased nitrogen was quickly depleted by phytoplankton growth in 10 to 48 h. In general, biological activity was a key factor in causing nitrate concentration change, dependent mainly on seawater temperature. The power function of the N-T relationship observed in our study area could be used to quickly estimate sea surface nitrate concentration, in combination with temperature data obtained by remote sensing.
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WOS记录号: WOS:000339046200015
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10534
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Yin, JP; Lin, L; Wang, YS; Du, JW.Temporal variability of temperature-nitrate relationship in a coastal region,CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2014,32(4):879-885
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