scholarly journals Carbonate system properties and anthropogenic carbon inventory in the Algerian Basin during SOMBA cruise (2014): Acidification estimate

2020 ◽  
Vol 221 ◽  
pp. 103783 ◽  
Author(s):  
Mehdia Asma Keraghel ◽  
Ferial Louanchi ◽  
Mohamed Zerrouki ◽  
Malik Aït Kaci ◽  
Nadira Aït-Ameur ◽  
...  
Keyword(s):  
Carbonate System ◽  
Anthropogenic Carbon ◽  
System Properties ◽  
Carbon Inventory

Evaluating the carbon inventory, carbon fluxes and carbon cycles for a long-term sustainable world

2019 ◽  
Vol 21 (15) ◽  
pp. 3994-4013 ◽  
Author(s):  
P. Tomkins ◽  
T. E. Müller
Keyword(s):  
Carbon Fluxes ◽  
Valuable Resource ◽  
Systematic Analysis ◽  
Carbon Cycles ◽  
Anthropogenic Carbon ◽  
Environmental Compartments ◽  
Carbon Inventory

Propositioning carbon to be seen a valuable resource, pathways towards establishing anthropogenic carbon cycles are outlined based on systematic analysis of the carbon inventory and fluxes throughout the different environmental compartments on earth.

scholarly journals Ocean acidification studies and the uncertainties relevance on measurements of marine carbonate system properties

2018 ◽  
Vol 66 (2) ◽  
pp. 234-242 ◽  
Author(s):  
Adriana Rodrigues Perretti ◽  
Ana Cecília Rizzatti de Albergaria-Barbosa ◽  
Rodrigo Kerr ◽  
Leticia Cotrim da Cunha
Keyword(s):  
Ocean Acidification ◽  
Carbonate System ◽  
Marine Carbonate ◽  
System Properties

scholarly journals Distributions of the carbonate system properties, anthropogenic CO<sub>2</sub>, and acidification during the 2008 BOUM cruise (Mediterranean Sea)

2012 ◽  
Vol 9 (3) ◽  
pp. 2709-2753 ◽  
Author(s):  
F. Touratier ◽  
V. Guglielmi ◽  
C. Goyet ◽  
L. Prieur ◽  
M. Pujo-Pay ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Dissolved Inorganic Carbon ◽  
Marine Ecosystem ◽  
Total Alkalinity ◽  
Carbonate System ◽  
Simple Method ◽  
Deep Waters ◽  
History Of ◽  
The Mediterranean ◽  
System Properties

Abstract. We relate here the distributions of two carbonate system key properties (total alkalinity, AT; and total dissolved inorganic carbon, CT) measured along a section in the Mediterranean Sea, going from Marseille (France) to the south of the Cyprus Island, during the 2008 BOUM cruise. The three main objectives of the present study are (1) to draw and comment on the distributions of AT and CT in the light of others properties like salinity, temperature, and dissolved oxygen, (2) to estimate the distribution of the anthropogenic CO2 (CANT) in the intermediate and the deep waters, and (3) to calculate the resulting variation of pH (acidification) since the beginning of the industrial era. Since the calculation of CANT is always an intense subject of debate, we apply two radically different approaches to estimate CANT: the very simple method TrOCA and the MIX approach, the latter being more precise but also more difficult to apply. A clear picture for the AT and the CT distributions is obtained: the mean concentration of AT is higher in the oriental basin while that of CT is higher in the occidental basin of the Mediterranean Sea, fully coherent with the previous published works. Despite of the two very different approaches we use here (TrOCA and MIX), the estimated distributions of CANT are very similar. These distributions show that the minimum of CANT encountered during the BOUM cruise is higher than 46.3 μmol kg−1 (TrOCA) or 48.8 μmol kg−1(MIX). All Mediterranean water masses (even the deepest) appear to be highly contaminated by CANT, as a result of the very intense advective processes that characterize the recent history of the Mediterranean circulation. As a consequence, unprecedented levels of acidification are reached with an estimated decrease of pH since the pre-industrial era of −0.148 to −0.061 pH unit, which places the Mediterranean Sea as one of the most acidified world marine ecosystem.

scholarly journals Along-Path Evolution of Biogeochemical and Carbonate System Properties in the Intermediate Water of the Western Mediterranean

2020 ◽  
Vol 7 ◽  
Author(s):  
Katrin Schroeder ◽  
Stefano Cozzi ◽  
Malek Belgacem ◽  
Mireno Borghini ◽  
Carolina Cantoni ◽  
...  
Keyword(s):  
Western Mediterranean ◽  
Intermediate Water ◽  
Carbonate System ◽  
System Properties

Heat and carbon changes in the ocean as a transient response and tool for decomposing heat uptake

2020 ◽  
Author(s):  
Charles Turner ◽  
Kevin Oliver ◽  
Peter Brown ◽  
Elaine McDonagh
Keyword(s):  
Transient Response ◽  
Anthropogenic Activities ◽  
Global Scale ◽  
Carbon Pools ◽  
Response Relationship ◽  
Transient Climate Response ◽  
Response Set ◽  
Heat Uptake ◽  
Anthropogenic Carbon ◽  
Carbon Inventory

&lt;p&gt;&lt;span&gt;Whilst anthropogenic activities are significantly altering the climate, both warming the atmosphere and increasing CO2, the ocean is&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;significantly ameliorating both effects. This effect is so important that the transient climate response to carbon emissions (TCRE), can be&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;formulated primarily in terms of the ocean. We show that in direct analogy to the TCRE, Anthropogenic Carbon (Canth) and temperature increases in the ocean are&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;linearly related, both globally and integrated over a range of scales. These ocean responses are typically of order 0.02K/mumol/kg,&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;(equivalently ~80MJ/mol). This linear relation allows for direct translation between temperature and carbon inventory increases. Furthermore,&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;we are far better able to decompose DIC changes into Canth increases and that of other carbon pools, than we are decomposing heat&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;inventory changes into added and redistributed heat. By separating total DIC change into Canth and that of other carbon pools, we can therefore remove the effect&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;of the transient response relationship between heat and carbon. This allows the production of estimates of added and redistributed heat in the&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;ocean from remaining DIC changes. Our results suggest that the variability of the transient response is predominately set by heat uptake, not carbon, and that this&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;variability may be traced to individual water masses. Therefore, it may be necessary to separate this transient response regionally in order&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;to obtain accurate estimates of added and redistributed heat at a global scale using this technique. The Eulerian transient response is set&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;predominantly by isotherm heave. The part of the transient response set by climate sensitivity, analogous to a semi-Lagrangian approach, is&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;set largely by patterns of regional heat uptake.&lt;/span&gt;&lt;/p&gt;

scholarly journals Analysis of Physical and Biogeochemical Control Mechanisms on Summertime Surface Carbonate System Variability in the Western Ross Sea (Antarctica) Using In Situ and Satellite Data

2019 ◽  
Vol 11 (3) ◽  
pp. 238 ◽  
Author(s):  
Paola Rivaro ◽  
Carmela Ianni ◽  
Lorenza Raimondi ◽  
Clara Manno ◽  
Silvia Sandrini ◽  
...  
Keyword(s):  
Sea Ice ◽  
Satellite Data ◽  
Surface Waters ◽  
Ross Sea ◽  
Chlorophyll Concentration ◽  
Control Mechanisms ◽  
Carbonate System ◽  
Basin Scale ◽  
System Properties ◽  
Western Ross Sea

In this study, carbonate system properties were measured in the western Ross Sea (Antarctica) over the 2005–2006 and 2011–2012 austral summers with the aim of analysing their sensitivity to physical and biogeochemical drivers. Daily Advanced Microwave Scanning Radiometer 2 (AMSR2) sea ice concentration maps, obtained prior to and during the samplings, were used to analyse the sea ice evolution throughout the experiment periods. Monthly means and 8-day composite chlorophyll concentration maps from the Moderate-resolution Imaging Spectroradiometer (MODIS) Aqua satellite at 4-km resolution were used to investigate inter-annual and basin scale biological variability. Chlorophyll-a concentrations in surface waters estimated by MODIS satellite data contribute to descriptions of the variability of carbonate system properties in surface waters. Mean values of carbonate system properties were comparable across both investigated years; however, the 2012 data displayed larger variability. Sea ice melting also had a pivotal role in controlling the carbonate system chemistry of the mixed layer both directly through dilution processes and indirectly by favouring the development of phytoplankton blooms. This resulted in high pH and ΩAr, and in low CT, particularly in those areas where high chlorophyll concentration was shown by satellite maps.

scholarly journals Anthropogenic carbon inventory in the Gulf of Cádiz

2012 ◽  
Vol 92 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Susana Flecha ◽  
F.F. Pérez ◽  
Gabriel Navarro ◽  
Javier Ruiz ◽  
Irene Olivé ◽  
...  
Keyword(s):  
Gulf Of Cadiz ◽  
Gulf Of Cádiz ◽  
Anthropogenic Carbon ◽  
Carbon Inventory

scholarly journals Anthropogenic carbon distribution in the eastern South Pacific Ocean

2009 ◽  
Vol 6 (2) ◽  
pp. 149-156 ◽  
Author(s):  
C. Goyet ◽  
R. Ito Gonçalves ◽  
F. Touratier
Keyword(s):  
Pacific Ocean ◽  
South Pacific ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Carbon Distribution ◽  
Carbonate System ◽  
South Pacific Ocean ◽  
Anthropogenic Carbon ◽  
Minimum Zone ◽  
Oxygen Minimum

Abstract. We present results of the CO2/carbonate system from the BIOSOPE cruise in the Eastern South Pacific Ocean, in an area not sampled previously. In particular, we present estimates of the anthropogenic carbon (C>TrOCAant) distribution in the upper 1000 m of this region using the TrOCA method. The highest concentrations of CTrOCAant found around 13° S, 132° W and 32° S, 91° W, are higher than 80 μmol.kg−1 and 70 μmol.kg−1, respectively. The lowest concentrations are observed below 800 m depth (≤2 μmol.kg−1) and within the Oxygen Minimum Zone (OMZ), mainly around 140° W (<11 μmol.kg−1). As a result of the anthropogenic carbon penetration there has been decrease in pH by over 0.1 on an average in the upper 200 m. This work further improves our understanding on the penetration of anthropogenic carbon in the Eastern Pacific Ocean.

Carbonate system properties in the Gerlache Strait, Northern Antarctic Peninsula (February 2015): II. Anthropogenic CO2 and seawater acidification

2018 ◽  
Vol 149 ◽  
pp. 182-192 ◽  
Author(s):  
Rodrigo Kerr ◽  
Catherine Goyet ◽  
Leticia C. da Cunha ◽  
Iole B.M. Orselli ◽  
Jannine M. Lencina-Avila ◽  
...  
Keyword(s):  
Antarctic Peninsula ◽  
Carbonate System ◽  
Seawater Acidification ◽  
Anthropogenic Co2 ◽  
System Properties

scholarly journals Quantifying anthropogenic carbon inventory changes in the Pacific sector of the Southern Ocean

2015 ◽  
Vol 174 ◽  
pp. 147-160 ◽  
Author(s):  
Nancy L. Williams ◽  
Richard A. Feely ◽  
Christopher L. Sabine ◽  
Andrew G. Dickson ◽  
James H. Swift ◽  
...  
Keyword(s):  
Southern Ocean ◽  
The Pacific ◽  
Anthropogenic Carbon ◽  
Carbon Inventory
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