NDLI: Model simulations of carbon sequestration in the northwest Pacific by patch fertilization

Content Provider	Springer Nature Link
Author	Matsumoto, Katsumi
Copyright Year	2006
Abstract	Iron fertilization of nutrient-rich surface waters of the ocean is one possible way to help slow the rising levels of atmospheric CO$_{2}$ by sequestering it in the oceans via biological carbon export. Here, I use an ocean general circulation model to simulate a patch of nutrient depletion in the subpolar northwest Pacific under various scenarios. Model results confirm that surface fertilization is an inefficient way to sequester carbon from the atmosphere (Gnanadesikan et al., 2003), since only about 20% of the exported carbon comes initially from the atmosphere. Fertilization reduces future production and thus CO$_{2}$ uptake by utilizing nutrients that would otherwise be available later. Effectively, this can be considered as leakage when compared to a control run. This “effective” leakage and the actual leakage of sequestered CO$_{2}$ cause a significant, rapid decrease in carbon retention (only 30–45% retained after 10 years and less than 20% after 50 years). This contrasts markedly with the almost 100% retention efficiency for the same duration using the same model, when carbon is disposed directly into the northwest Pacific (Matsumoto and Mignone, 2005). As a consequence, the economic effectiveness of patch fertilization is poor in two limiting cases of the future price path of carbon. Sequestered carbon in patch fertilization is lost to the atmosphere at increasingly remote places as time passes, which would make monitoring exceedingly difficult. If all organic carbon from one-time fertilization reached the ocean bottom and remineralized there, acidification would be about −0.05 pH unit with O$_{2}$ depletion about −20 µmol kg$^{−1}$. These anomalies are probably too small to seriously threaten deep sea biota, but they are underestimated in the model because of its large grid size. The results from this study offer little to advocate purposeful surface fertilization as a serious means to address the anthropogenic carbon problem.
Starting Page	887
Ending Page	902
Page Count	16
File Format	PDF
ISSN	09168370
Journal	Journal of Oceanography
Volume Number	62
Issue Number	6
e-ISSN	1573868X
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2006-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ocean carbon cycle anthropogenic carbon sequestration numerical model biogeochemistry Oceanography Hydrobiology
Content Type	Text
Resource Type	Article
Subject	Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Model Simulations of Carbon Sequestration in the Northwest Pacific by Direct Injection

Overview of NOPACCS (Northwest Pacific Carbon Cycle Study)

Estimation of Anthropogenic CO2 Inventories in the Ocean

Natural Variability and Anthropogenic Trends in the Ocean Carbon Sink

A global ocean biogeochemistry general circulation model and its simulations

Introduction: What is the Ocean Sequestration of Carbon Dioxide?

Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

ENSO related variations in biogeochemistry of AA and HA in settling particles along the equatorial Pacific Ocean

Re-Estimation of Annual Anthropogenic Carbon Input from Oyashio into North Pacific Intermediate Water

Model simulations of carbon sequestration in the northwest Pacific by patch fertilization

Similar Documents

Model Simulations of Carbon Sequestration in the Northwest Pacific by Direct Injection

Overview of NOPACCS (Northwest Pacific Carbon Cycle Study)

Estimation of Anthropogenic CO2 Inventories in the Ocean

Natural Variability and Anthropogenic Trends in the Ocean Carbon Sink

A global ocean biogeochemistry general circulation model and its simulations

Introduction: What is the Ocean Sequestration of Carbon Dioxide?

Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

ENSO related variations in biogeochemistry of AA and HA in settling particles along the equatorial Pacific Ocean

Re-Estimation of Annual Anthropogenic Carbon Input from Oyashio into North Pacific Intermediate Water

Model simulations of carbon sequestration in the northwest Pacific by patch fertilization