Anthropogenic CO2 in the Azores region
The AZORES-I cruise was conducted in August 1998, spanning the length of three latitudinal large-scale sections at 22, 28 and 32ºW. The oceanic carbon system was oversampled by measuring total alkalinity, total inorganic carbon and pH. It is thus possible to estimate anthropogenic CO2 (CANT) and to...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2010-12-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1214 |
| _version_ | 1830136427605655552 |
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| author | Fiz F. Pérez Javier Arístegui Marcos Vázquez-Rodríguez Aida F. Ríos |
| author_facet | Fiz F. Pérez Javier Arístegui Marcos Vázquez-Rodríguez Aida F. Ríos |
| author_sort | Fiz F. Pérez |
| collection | DOAJ |
| description | The AZORES-I cruise was conducted in August 1998, spanning the length of three latitudinal large-scale sections at 22, 28 and 32ºW. The oceanic carbon system was oversampled by measuring total alkalinity, total inorganic carbon and pH. It is thus possible to estimate anthropogenic CO2 (CANT) and to investigate its relationship with the main water masses that are present. C CANT is calculated using the latest back-calculation techniques: φCTº and TrOCA methods. Although the two approaches produce similar vertical distributions, the results of the TrOCA method show higher CANT variability and produce higher inventories than those of the φCTº method. The large proportion of Mediterranean Water found in the northern part of the study area is the main cause of the observed increase northwards of C CANT inventories. Changes in C CANT inventories between 1981 and 2004 are evaluated using data from the TTO-NAS, OACES-93 and METEOR-60/5 cruises. According to the φCTº and TrOCA approaches, the average long-term rates of C CANT inventory change are 1.32±0.11 mol C m-2 y-1 (P=0.008) and 1.18±0.16 mol C m-2 y-1 (P=0.018), respectively. During the 1993-1998 a significant increase in the C CANT storage rate was detected by the φCTº method. It is thought that this stems directly from the enhanced Labrador Seawater formation after the increased advection observed at the time. |
| first_indexed | 2024-12-17T07:51:33Z |
| format | Article |
| id | doaj.art-6a96c1712a7549bb8bfb5106abad04a0 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-17T07:51:33Z |
| publishDate | 2010-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-6a96c1712a7549bb8bfb5106abad04a02022-12-21T21:57:50ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342010-12-0174S1111910.3989/scimar.2010.74s10111203Anthropogenic CO2 in the Azores regionFiz F. Pérez0Javier Arístegui1Marcos Vázquez-Rodríguez2Aida F. Ríos3Instituto de Investigacións Mariñas (CSIC)Facultad de Ciencias del Mar, Campus Universitario de TafiraInstituto de Investigacións Mariñas (CSIC)Instituto de Investigacións Mariñas (CSIC)The AZORES-I cruise was conducted in August 1998, spanning the length of three latitudinal large-scale sections at 22, 28 and 32ºW. The oceanic carbon system was oversampled by measuring total alkalinity, total inorganic carbon and pH. It is thus possible to estimate anthropogenic CO2 (CANT) and to investigate its relationship with the main water masses that are present. C CANT is calculated using the latest back-calculation techniques: φCTº and TrOCA methods. Although the two approaches produce similar vertical distributions, the results of the TrOCA method show higher CANT variability and produce higher inventories than those of the φCTº method. The large proportion of Mediterranean Water found in the northern part of the study area is the main cause of the observed increase northwards of C CANT inventories. Changes in C CANT inventories between 1981 and 2004 are evaluated using data from the TTO-NAS, OACES-93 and METEOR-60/5 cruises. According to the φCTº and TrOCA approaches, the average long-term rates of C CANT inventory change are 1.32±0.11 mol C m-2 y-1 (P=0.008) and 1.18±0.16 mol C m-2 y-1 (P=0.018), respectively. During the 1993-1998 a significant increase in the C CANT storage rate was detected by the φCTº method. It is thought that this stems directly from the enhanced Labrador Seawater formation after the increased advection observed at the time.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1214anthropogenic co2co2 uptakewater massesmediterranean waterlabrador seawater |
| spellingShingle | Fiz F. Pérez Javier Arístegui Marcos Vázquez-Rodríguez Aida F. Ríos Anthropogenic CO2 in the Azores region Scientia Marina anthropogenic co2 co2 uptake water masses mediterranean water labrador seawater |
| title | Anthropogenic CO2 in the Azores region |
| title_full | Anthropogenic CO2 in the Azores region |
| title_fullStr | Anthropogenic CO2 in the Azores region |
| title_full_unstemmed | Anthropogenic CO2 in the Azores region |
| title_short | Anthropogenic CO2 in the Azores region |
| title_sort | anthropogenic co2 in the azores region |
| topic | anthropogenic co2 co2 uptake water masses mediterranean water labrador seawater |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1214 |
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