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Ocean colour signature of climate change

Journal Article · · Nature Communications
 [1];  [2];  [3];  [4];  [5];  [3]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); DOE/OSTI
  2. Univ. of Southampton (United Kingdom)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. National Oceanography Centre Southampton (United kingdom)
  5. National Oceanography Centre Southampton (United kingdom); Univ. of California, Santa Cruz, CA (United States)
Monitoring changes in marine phytoplankton is important as they form the foundation of the marine food web and are crucial in the carbon cycle. Often Chlorophyll-a (Chl-a) is used to track changes in phytoplankton, since there are global, regular satellite-derived estimates. However, satellite sensors do not measure Chl-a directly. Instead, Chl-a is estimated from remote sensing reflectance (RRS): the ratio of upwelling radiance to the downwelling irradiance at the ocean’s surface. Using a model, we show that RRS in the blue-green spectrum is likely to have a stronger and earlier climate-change-driven signal than Chl-a. This is because RRS has lower natural variability and integrates not only changes to in-water Chl-a, but also alterations in other optically important constituents. Phytoplankton community structure, which strongly affects ocean optics, is likely to show one of the clearest and most rapid signatures of changes to the base of the marine ecosystem.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-94ER61937
OSTI ID:
1610276
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (12)

Intrinsic timescales of variability in a marine plankton model journal March 2021
Complex interactions between local adaptation, phenotypic plasticity and sex affect vulnerability to warming in a widespread marine copepod journal March 2019
Projected Effects of Climate-Induced Changes in Hydrodynamics on the Biogeochemistry of the Mediterranean Sea Under the RCP 8.5 Regional Climate Scenario journal November 2020
The Influence of Temperature and Community Structure on Light Absorption by Phytoplankton in the North Atlantic journal September 2019
An Ocean-Colour Time Series for Use in Climate Studies: The Experience of the Ocean-Colour Climate Change Initiative (OC-CCI) journal October 2019
Changes in water color shift competition between phytoplankton species with contrasting light‐harvesting strategies journal February 2020
Small Phytoplankton Shapes Colored Dissolved Organic Matter Dynamics in the North Atlantic Subtropical Gyre journal November 2019
An Assessment and Improvement of Satellite Ocean Color Algorithms for the Tropical Pacific Ocean journal December 2019
Ocean warming compresses the three-dimensional habitat of marine life journal December 2019
An introduction to the ‘Oceans and Society: Blue Planet’ initiative journal July 2019
Integrating patterns of thermal tolerance and phenotypic plasticity with population genetics to improve understanding of vulnerability to warming in a widespread copepod journal September 2019
A global compilation of in situ aquatic high spectral resolution inherent and apparent optical property data for remote sensing applications journal January 2020

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