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Biological Carbon Pump

Javier Arístegui
Mar 29, 2025
1 min read

The OceanICU expedition aims to enhance our understanding of the key processes of the biological carbon pump as well as the impact of climate stressors on surface plankton communities in the tropical and sub-tropical Atlantic Ocean, contributing to WP3 & WP4.


The expedition will take us across different regions of the Atlantic Ocean varying in nutrients, oxygen levels, organic matter content and temperature, with the aim of helping constrain biogeochemical and ecological models, and to help refine model parameterisations.

We will achieve this through:

  • Investigating regional differences in the contributions of various carbon pump processes, including gravitational (organic and carbonate), migrant, and mixing fluxes;

  • Assessing how vertical carbon fluxes (sources) and respiration (sinks) vary across different regions in the water column;

  • Assessing the impact of aerosol deposition (terrestrial dust) on microbial communities—including viruses, bacteria, and phytoplankton—with a focus on its influence on iron availability.


As the expedition goes on, we will give some insights from the scientists and students themselves on what they will being doing on the expedition, and how each of their experiments contribute to the goal of OceanICU.


José Luis from IIM-CSIC sampling for particulate organic carbon and nitrogen.
José Luis from IIM-CSIC sampling for particulate organic carbon and nitrogen.

 
 
 

5 Comments


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6 days ago

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Oct 06

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Sep 25

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Hirofumi Onde
Aug 22

This OceanICU expedition sounds incredibly important for understanding our oceans better! It's awesome to see scientists tackling such complex issues like the biological carbon pump and climate stressors. I'm really looking forward to their updates from the Atlantic and learning about what the team discovers. Such vital work to protect our planet! Gemini Omni

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Aug 16

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