| DOI: | 10.1002/2014GL060246
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| 论文题名: | Geostationary satellite observations of dynamic phytoplankton photophysiology |
| 作者: | O'Malley R.T.; Behrenfeld M.J.; Westberry T.K.; Milligan A.J.; Shang S.; Yan J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9926
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| EISSN: | 1944-9657
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| 出版年: | 2014
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| 卷: | 41, 期:14 | | 起始页码: | 5052
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| 结束页码: | 5059
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| 语种: | 英语
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| 英文关键词: | GOCI fluorescence
; NPQ effects
; phytoplankton
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| Scopus关键词: | Fluorescence
; Geostationary satellites
; Population statistics
; Satellite imagery
; Field observations
; Fluorescence emission
; Laboratory studies
; Moderate resolution imaging spectroradiometer
; Non-photochemical quenching
; NPQ effects
; Phytoplankton chlorophyll
; Strong correlation
; Phytoplankton
; Aqua (satellite)
; chlorophyll
; concentration (composition)
; conceptual framework
; correlation
; diurnal variation
; geostationary satellite
; light effect
; marine environment
; mixed layer
; ocean color
; phytoplankton
; seasonal variation
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| 英文摘要: | Since June 2010, the Geostationary Ocean Color Imager (GOCI) has been collecting the first diurnally resolved satellite ocean measurements. Here GOCI retrievals of phytoplankton chlorophyll concentration and fluorescence are used to evaluate daily to seasonal changes in photophysiological properties. We focus on nonphotochemical quenching (NPQ) processes that protect phytoplankton from high light damage and cause strong diurnal cycles in fluorescence emission. This NPQ signal varies seasonally, with maxima in winter and minima in summer. Contrary to expectations from laboratory studies under constant light conditions, this pattern is highly consistent with an earlier conceptual model and recent field observations. The same seasonal cycle is registered in fluorescence data from the polar-orbiting Moderate Resolution Imaging Spectroradiometer Aqua satellite sensor. GOCI data reveal a strong correlation between mixed layer growth irradiance and fluorescence-derived phytoplankton photoacclimation state that can provide a path for mechanistically accounting for NPQ variability and, subsequently, retrieving information on iron stress in global phytoplankton populations. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906311306&doi=10.1002%2f2014GL060246&partnerID=40&md5=bef1ddaa156d2997ec1aef562a302a01
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7190
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States
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| Recommended Citation: | |
O'Malley R.T.,Behrenfeld M.J.,Westberry T.K.,et al. Geostationary satellite observations of dynamic phytoplankton photophysiology[J]. Geophysical Research Letters,2014-01-01,41(14).
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