Ocean Science
Ocean Science
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Articles | Volume 18, issue 1
Articles | Volume 18, issue 1
https://doi.org/10.5194/os-18-255-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-18-255-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 1
Research article
 | 
24 Feb 2022
Research article |  | 24 Feb 2022

Global distribution and variability of subsurface chlorophyll a concentrations

Sayaka Yasunaka, Tsuneo Ono, Kosei Sasaoka, and Kanako Sato

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Short summary
Chlorophyll a (Chl a), which is the primary pigment used in photosynthesis, often retains its maximum value in the subsurface layer rather that at the surface. In this study, we integrate Chl a concentration data from recent biogeochemical floats, as well as from historical ship-based and other observations, and present global maps of subsurface Chl a concentration and seasonal and interannual variations with related variables, i.e., light intensity, nitrate concentration, and oxygen production.
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