The changing ocean carbon cycle-a midterm synthesis of the Joint Global Ocean Flux Study

2000 ◽  
Vol 45 (6) ◽  
pp. 1446-1447
Author(s):  
Alan Longhurst
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Ocean Carbon

Coccolith chemistry reveals secular variations in the global ocean carbon cycle?

2007 ◽  
Vol 253 (1-2) ◽  
pp. 83-95 ◽  
Author(s):  
R.E.M. Rickaby ◽  
E. Bard ◽  
C. Sonzogni ◽  
F. Rostek ◽  
L. Beaufort ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Secular Variations ◽  
Ocean Carbon

scholarly journals Marine Group II Archaea, potentially important players in the global ocean carbon cycle

2015 ◽  
Vol 6 ◽  
Author(s):  
Chuanlun L. Zhang ◽  
Wei Xie ◽  
Ana-Belen Martin-Cuadrado ◽  
Francisco Rodriguez-Valera
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Group Ii ◽  
Ocean Carbon

Simulation of the Natural Distribution of Carbon and Nutrients in the Ocean Based on the Global Ocean Carbon Cycle Model MOM4_L40

2015 ◽  
Vol 58 (1) ◽  
pp. 1-19 ◽  
Author(s):  
LI Qing-Quan ◽  
TAN Juan ◽  
WANG Lan-Ning ◽  
WEI Min ◽  
ZHAO Qi-Geng
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Cycle Model ◽  
Ocean Carbon Cycle ◽  
Natural Distribution ◽  
Carbon Cycle Model ◽  
Ocean Carbon

The POM-DOM piezophilic microorganism continuum (PDPMC)—The role of piezophilic microorganisms in the global ocean carbon cycle

2014 ◽  
Vol 58 (1) ◽  
pp. 106-115 ◽  
Author(s):  
JiaSong Fang ◽  
Li Zhang ◽  
JiangTao Li ◽  
Chiaki Kato ◽  
Christian Tamburini ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Ocean Carbon

Global Ocean Carbon Cycle Modeling

2003 ◽  
pp. 217-238 ◽  
Author(s):  
Scott C. Doney ◽  
Keith Lindsay ◽  
J. Keith Moore
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Ocean Carbon

Testing global ocean carbon cycle models using measurements of atmospheric O2and CO2concentration

1998 ◽  
Vol 12 (2) ◽  
pp. 213-230 ◽  
Author(s):  
Britton B. Stephens ◽  
Ralph F. Keeling ◽  
Martin Heimann ◽  
Katharina D. Six ◽  
Richard Murnane ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Global Ocean ◽  
Ocean Carbon Cycle ◽  
Ocean Carbon

scholarly journals Adjoint sensitivity of the air-sea CO<sub>2</sub> flux to ecosystem parameterization in a three-dimensional global ocean carbon cycle model

2007 ◽  
Vol 4 (2) ◽  
pp. 1377-1404 ◽  
Author(s):  
J. F. Tjiputra ◽  
A. M. E. Winguth
Keyword(s):  
Carbon Cycle ◽  
Marine Ecosystem ◽  
Three Dimensional ◽  
Co2 Flux ◽  
Global Ocean ◽  
Ecosystem Structure ◽  
Cycle Model ◽  
Ocean Carbon Cycle ◽  
Carbon Cycle Model ◽  
Ocean Carbon

Abstract. The regional sensitivity of air-sea CO2 flux to ecosystem components and parameters in a three-dimensional ocean carbon cycle model is estimated using an adjoint model. Adjoint sensitivities to the global air-sea CO2 flux reveal that the biological component of the model is significant in the high latitudes of both hemispheres and in the Equatorial Pacific. More detailed analysis indicates that zooplankton grazing activity plays a major role in the carbon exchange in the above regions. The herbivores' ingestion parameter in the model regulates the flux of remineralized (i.e. regenerated) biogenic nutrients; thus, substantially controls the biological production and the concentration of dissolved inorganic carbon (DIC) in the euphotic zone. Over a 10-year period, reducing the herbivores' ingestion parameter in the model by 25% could increase the global uptake of atmospheric carbon by 6 Pg C. Thus, climate induced changes in the marine ecosystem structure are of importance for the future uptake of atmospheric CO2.

Past century increases of terrestrial nutrient inputs impact both the coastal and open ocean carbon cycle

2021 ◽  
Author(s):  
Fabrice Lacroix ◽  
Tatiana Ilyina ◽  
Moritz Mathis ◽  
Goulven Gildas Laruelle ◽  
Pierre Regnier
Keyword(s):  
Carbon Cycle ◽  
Coastal Ocean ◽  
Open Ocean ◽  
Time Span ◽  
Ocean Dynamics ◽  
Global Ocean ◽  
Past Century ◽  
Nutrient Inputs ◽  
Ocean Carbon Cycle ◽  
Ocean Carbon

&lt;p&gt;Past century increases in terrigenous N and P inputs to the ocean due to industrialization, agricultural practices and wastewater have been reported to have dramatic consequences for ecosystems in various coastal regions. Yet, the impacts of increased nutrient inputs through river transports and atmospheric deposition on the coastal and open ocean carbon cycle have yet to be quantitatively investigated at the global scale. To address this gap of knowledge, we enhanced the ocean biogeochemical model HAMOCC at a horizontal resolution of around 0.4&amp;#176; in order to improve the representation of temporal changes of riverine fluxes and of coastal ocean dynamics in the model. Through a series of simulations with differing model forcings, we isolated individual effects arising from (1) increasing atmospheric CO&lt;sub&gt;2&lt;/sub&gt; levels, (2) a changing physical climate and (3) alterations in oceanic inputs of terrigenous P and N inputs, all over the 1905 to 2010 period. Our results indicate a strong response of the coastal ocean ecosystem to increased terrestrial nutrient inputs, which induce the global coastal Net Primary Production (NPP) to increase by 14% over the simulation time span. This eutrophication signal is, furthermore, partly exported to the open ocean, which undergoes an increase in NPP of 1.75 Pg C yr&lt;sup&gt;-1&lt;/sup&gt;, or 4 % in relative terms, in the simulations, owing to the cross-shelf export of 33-46% of the anthropogenic P and N inputs to the coastal ocean. As a whole, increased P and N inputs lead to an overall global ocean NPP rise of around 2.15 Pg C yr&lt;sup&gt;-1&lt;/sup&gt;, or 5% (combined coastal and open ocean). This net increase attributed to land-ocean couplings exceeds the simulated global oceanic NPP decrease of 4 % associated with stronger upper ocean thermal stratification over the time span, a feedback that been under stronger scrutiny in published literature. Our results suggest that increased riverine nutrient concentrations due to anthropogenic activities may also have substantial impacts for ecosystems in the open ocean, in contrary to what was assumed until now, although this is dependent on the rate of transfer of the nutrients from the coastal to the open ocean.&lt;/p&gt;

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