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Gonzalez Davila, Melchor; Santana-Casiano, Juana Magdalena; Llinás, Octavio; González-Dávila, Enrique-Francisco (2008): Surface carbon dioxide measurements between 1994 and 2004 at site Estoc [dataset]. Faculty of Marine Sciences, University of Las Palmas, Gran Canaria, PANGAEA, https://doi.org/10.1594/PANGAEA.690705, Supplement to: Gonzalez Davila, M et al. (2003): Seasonal and interanual variability of sea-surface carbon dioxide species at the European Station for Time Series in the Ocean at the Canary Island (ESTOC) between 1996-2000. Global Biogeochemical Cycles, 17(3), 1076, https://doi.org/10.1029/2002GB001993

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Abstract:
Seasonal patterns in hydrography, partial pressure of CO2, fCO2, pHt, total alkalinity, AT, total dissolved inorganic carbon, CT, nutrients, and chlorophyll a were measured in surface waters on monthly cruises at the European Station for Time Series in the Ocean at the Canary Islands (ESTOC) located in the northeast Atlantic subtropical gyre. With over 5 years of oceanographic data starting in 1996, seasonal and interannual trends of CO2 species and air-sea exchange of CO2 were determined. Net CO2 fluxes show this area acts as a minor source of CO2, with an average outgassing value of 179 mmol CO2/m**2 yr controlled by the dominant trade winds blowing from May to August. The effect of short-term wind variability on the CO2 flux has been addressed by increasing air-sea fluxes by 63% for 6-hourly sampling frequency. The processes governing the monthly variations of CT have been determined. From March to October, when CT decreases, mixing at the base of the mixed layer (11.5 ± 1.5 mmol/m**3) is compensated by air-sea exchange, and a net organic production of 25.5 ± 5.7 mmol/m**3 is estimated. On an annual scale, biological drawdown accounts for the decrease in inorganic carbon from March to October, while mixing processes control the CT increase from October to the end of autumn. After removing seasonality variability, fCO2sw increases at a rate of 0.71 ± 5.1 µatm/yr, and as a response to the atmospheric trend, inorganic carbon increases at a rate of 0.39 ± 1.6 µmol/kg yr.
Project(s):
European Station for Time-Series in the Ocean Canary Islands (ESTOC)
Coverage:
Latitude: 29.166700 * Longitude: -15.500000
Date/Time Start: 1995-10-02T18:00:00 * Date/Time End: 2004-01-25T01:34:00
Minimum DEPTH, water: 5 m * Maximum DEPTH, water: 5 m
Event(s):
ESTOC_TTrap_001 * Latitude: 29.166700 * Longitude: -15.500000 * Date/Time: 1995-01-01T00:00:00 * Elevation: -3600.0 m * Location: Canary Islands * Method/Device: Mooring (MOOR) * Comment: time series station from 1996-1998
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeGeocode
2 DEPTH, waterDepth watermGeocode
3 Temperature, waterTemp°CGonzalez Davila, Melchor
4 SalinitySalGonzalez Davila, Melchor
5 Alkalinity, totalATmmol(eq)/lGonzalez Davila, MelchorAlkalinity, potentiometric
6 Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmGonzalez Davila, MelchorInfrared CO2/H2O gas analyzer, non-dispersive, LI-COR type LI-6262
7 pHpHGonzalez Davila, Melchor
8 Density, mass densityDensitykg/m3Gonzalez Davila, MelchorCalculated
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
504 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Date/Time		2 
Depth water [m]		3 
Temp [°C]		4 
Sal		5 
AT [mmol(eq)/l]		6 
fCO2water_SST_wet [µatm]		7 
pH		8 
Density [kg/m3]
1995-10-02T18:00523.02336.9162.477375.2188.081025.383
1995-10-04T18:08523.31936.9482.479379.8018.071025.320
1995-10-07T18:20523.28136.9382.477381.5268.071025.324
1995-11-26T21:37522.27836.9112.476369.7838.081025.593
1996-01-25T01:34519.19636.7382.466342.5858.111026.301
1996-02-05T02:17519.02636.7162.469341.2368.111026.328
1996-02-08T02:29519.02936.7322.469338.7248.111026.339
1996-03-16T04:55518.37036.5902.462329.8578.131026.399
1996-04-25T07:32519.07236.8492.473346.8928.111026.418
1996-05-16T08:55520.05836.8742.477352.0748.101026.178
1996-05-18T09:02520.06736.8252.476351.1698.101026.138
1996-05-23T09:22519.84336.7982.474351.0188.101026.177
1996-06-13T10:45520.46036.8342.477357.1458.101026.039
1996-07-10T12:31521.03436.8312.477355.4538.101025.881
1996-09-28T17:46523.39436.9202.481373.1358.081025.277
1996-10-31T19:56522.84236.8512.477374.5478.081025.386
1996-12-18T23:04520.54136.8892.479346.5418.111026.059
1997-01-12T00:43519.46736.8032.475338.4338.121026.280
1997-03-16T04:51519.11036.7622.466353.5878.101026.341
1997-04-15T06:50519.96336.8712.478351.1568.101026.201
1997-05-15T08:48520.67636.9962.483356.2108.101026.105
1997-06-12T10:39522.31936.9912.483379.4948.081025.642
1997-06-14T10:47522.31836.9852.485375.2138.081025.638
1997-07-05T12:09522.51536.8482.474380.0558.071025.478
1997-11-06T20:19523.36836.7372.469377.3188.071025.146
1997-12-04T22:09522.17136.8962.479369.2388.081025.612
1998-01-22T01:22520.44036.9192.480352.7458.101026.110
1998-02-19T03:13519.61536.8512.478343.1588.111026.278
1998-03-26T05:31519.78936.8122.473353.9158.101026.202
1998-04-08T06:22519.72936.8502.475351.1218.101026.247
1998-04-26T07:33519.60536.8602.477346.2748.111026.287
1998-05-21T09:12519.78436.9162.477356.5498.101026.283
1998-06-26T11:34521.00336.7792.470364.9158.091025.850
1998-07-03T12:01521.31536.7942.472369.8828.081025.775
1998-09-29T17:49523.43736.7412.471387.1608.071025.129
1998-10-08T18:24523.61636.8682.473387.9078.061025.172
1998-11-19T21:10522.00536.7012.469361.9618.091025.511
1998-12-16T23:00520.14536.7212.471344.7118.111026.038
1999-02-03T02:10518.58936.7212.470332.9258.121026.444
1999-02-06T02:22517.92236.6642.467323.8048.131026.568
1999-02-18T03:09517.88136.6452.466321.4328.131026.563
1999-03-21T05:11517.99736.6632.463331.8008.121026.548
1999-10-24T19:27523.41536.8032.472384.6748.071025.182
1999-11-04T20:11522.63536.6362.461373.9368.081025.282
2000-01-25T01:34518.34236.5922.460326.4248.131026.407
2000-02-01T02:01518.65936.6782.469335.5418.121026.393
2000-03-13T04:43518.79036.7832.475342.2738.111026.440
2000-04-04T06:09518.82236.8482.474349.6378.111026.481
2000-07-16T12:55521.60236.7392.471372.4208.081025.653
2000-08-27T15:40522.93036.8442.475377.0118.071025.355
2000-09-18T17:06523.04436.8122.475380.3608.071025.297
2000-11-20T21:14521.09436.9722.482357.8818.101025.972
2000-11-30T21:54520.98336.9502.480365.0468.091025.985
2001-01-26T01:38518.99736.8292.470354.4598.101026.422
2001-02-20T03:17518.99736.8292.470356.0868.101026.422
2001-02-22T03:25518.91936.7972.469352.9138.101026.417
2001-03-24T05:23518.99536.7972.470352.8718.101026.398
2001-03-29T05:43518.99536.7972.470348.8518.101026.398
2001-04-24T07:25519.10236.7922.470349.4188.101026.366
2001-05-18T09:00519.74436.7922.469352.1368.101026.199
2001-06-29T11:46521.33536.7332.464371.3838.081025.723
2001-09-01T15:58524.14636.8252.473397.2098.061024.982
2001-09-28T17:45524.60436.9332.480401.6858.051024.926
2001-10-11T18:36524.12636.7362.466391.5588.061024.920
2002-02-28T03:48518.90136.6552.465345.7768.111026.313
2002-03-04T04:12518.87036.7562.473345.5148.111026.399
2002-04-14T06:54518.87036.7562.473344.7488.111026.399
2002-05-15T08:56519.03236.6742.467339.3678.111026.294
2002-06-29T11:54520.52236.7842.469366.0468.091025.984
2002-09-13T16:53522.59936.6242.460383.2628.071025.283
2002-10-16T19:04523.51336.9512.481392.1738.061025.266
2002-11-23T21:34522.11136.8062.472380.3378.071025.561
2003-02-01T02:02519.60536.7732.469361.5108.091026.221
2003-02-21T03:21518.78736.7372.468354.7308.101026.405
2003-02-24T03:33518.65136.7142.467349.3838.101026.423
2003-03-19T05:03518.79236.6852.465347.1298.111026.364
2003-04-08T06:22519.51836.7622.471348.1358.101026.235
2003-05-16T08:52519.25236.7502.469346.7608.111026.295
2003-06-15T10:50521.07736.8652.476369.8838.081025.895
2003-07-18T13:01522.90036.8702.479384.7158.071025.383
2003-09-13T16:46523.79636.7942.469397.2778.061025.063
2003-10-31T19:55523.40136.8332.470401.5918.051025.209
2003-11-05T20:15522.75336.6872.460399.2008.051025.287
2004-01-25T01:34519.37036.7702.469362.2908.091026.280