Extending the SeaWiFS chlorophyll data set back 50 years in the northeast Atlantic
Extending the SeaWiFS chlorophyll data set back 50 years in the northeast Atlantic
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DOI：
10.1029/2005gl022484
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发表时间：
2005-03
影响因子：
5.2
通讯作者：
D. Raitsos;P. C. Reid;S. Lavender;M. Edwards;A. Richardson
中科院分区：
文献类型：
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作者：
D. Raitsos;P. C. Reid;S. Lavender;M. Edwards;A. Richardson
浮游植物在生物地球化学循环和气候过程中发挥着关键作用。叶绿素-a (Chl-a) 是浮游植物生物量的一种测量方法，自 1997 年以来，全球范围内只能通过海景宽视场传感器 (SeaWiFS) 进行精确定量测量。在北大西洋，连续浮游生物记录仪已经收集了超过 50 年的叶绿素（浮游植物颜色指数，PCI）半定量测量结果。在这里，我们证明了 1997 年至 2002 年 PCI 和 SeaWiFS Chl-a 之间的显着相关性。结合这两个时间序列可以量化 20 世纪 80 年代中期生物量的逐步增加；这种状态转变相当于叶绿素-a 增加了 60%。这是由于冬季叶绿素 a 增加了 80%，而夏季增加幅度较小。这个关于自 1948 年以来北大西洋叶绿素 a 每月变化的新高分辨率数据集现在可用于气候模型的开发和验证，以及与气候相关的生态变化的解释。
Phytoplankton play a key role in biogeochemical cycling and climate processes. Precise quantitative measurements of chlorophyll‐a (Chl‐a), a measure of phytoplankton biomass, have only been available globally since 1997 from the Sea‐viewing Wide Field‐of‐view Sensor (SeaWiFS). In the North Atlantic, semi‐quantitative measurements of chlorophyll (Phytoplankton Color Index, PCI) for >50 years have been collected by the Continuous Plankton Recorder. Here we demonstrate a significant correlation between PCI and SeaWiFS Chl‐a from 1997–2002. Combining both time series allows quantification of the stepwise increase in biomass in the mid‐1980s; this regime shift corresponded to a 60% increase in Chl‐a. This was a result of an 80% increase in Chl‐a during winter, alongside a smaller summer increase. This new high‐resolution data set on the monthly variation of Chl‐a in the North Atlantic since 1948 is now available for the development and validation of climate models, and for interpretation of ecological changes related to climate.