From silk to satellite: half a century of ocean colour anomalies in the Northeast Atlantic

Raitsos, Dionysios E., Pradhan, Yaswant, Lavender, Samantha J., Hoteit, Ibrahim, Mcquatters-Gollop, Abigail, Reid, Phillip C. and Richardson, Anthony J. (2014) From silk to satellite: half a century of ocean colour anomalies in the Northeast Atlantic. Global Change Biology, 20 7: 2117-2123. doi:10.1111/gcb.12457

Author Raitsos, Dionysios E.
Pradhan, Yaswant
Lavender, Samantha J.
Hoteit, Ibrahim
Mcquatters-Gollop, Abigail
Reid, Phillip C.
Richardson, Anthony J.
Title From silk to satellite: half a century of ocean colour anomalies in the Northeast Atlantic
Journal name Global Change Biology   Check publisher's open access policy
ISSN 1365-2486
Publication date 2014-07-01
Year available 2014
Sub-type Article (original research)
DOI 10.1111/gcb.12457
Open Access Status Not Open Access
Volume 20
Issue 7
Start page 2117
End page 2123
Total pages 7
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Abstract Changes in phytoplankton dynamics influence marine biogeochemical cycles, climate processes, and food webs, with substantial social and economic consequences. Large-scale estimation of phytoplankton biomass was possible via ocean colour measurements from two remote sensing satellites - the Coastal Zone Colour Scanner (CZCS, 1979-1986) and the Sea-viewing Wide Field-of-view Sensor (SeaWiFS, 1998-2010). Due to the large gap between the two satellite eras and differences in sensor characteristics, comparison of the absolute values retrieved from the two instruments remains challenging. Using a unique in situ ocean colour dataset that spans more than half a century, the two satellite-derived chlorophyll-a (Chl-a) eras are linked to assess concurrent changes in phytoplankton variability and bloom timing over the Northeast Atlantic Ocean and North Sea. Results from this unique re-analysis reflect a clear increasing pattern of Chl-a, a merging of the two seasonal phytoplankton blooms producing a longer growing season and higher seasonal biomass, since the mid-1980s. The broader climate plays a key role in Chl-a variability as the ocean colour anomalies parallel the oscillations of the Northern Hemisphere Temperature (NHT) since 1948.
Keyword Chlorophyll
Northeast Atlantic
Northern hemisphere temperature
Ocean colour
Phytoplankton variability
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2015 Collection
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