аЯрЁБс>ўџ 79ўџџџ6џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџьЅСM јПиbjbjт=т=""€W€Wиџџџџџџl&жжжжъ&ѕЖ(((((((tvvvvvv$Ћ Ыњš(((((šš ((Џš š š (2((tš (tš Оš XX( Pь8сјƒЦ&АжZ њXXХ0ѕXХT FХXš &&йDATA DESCRIPTION FOR FILE CONTRIBUTORS Toste Tanhua Leibniz Institute of Marine Sciences at Kiel University Marine Biogeochemistry Duesternbrooker Weg 20 D-24105 Kiel, Germany Email: ttanhua@ifm-geomar.de Douglas W.R. Wallace Leibniz Institute of Marine Sciences at Kiel University Marine Biogeochemistry Duesternbrooker Weg 20 D-24105 Kiel, Germany Email:  HYPERLINK "mailto:dwallace@ifm-geomar.de" dwallace@ifm-geomar.de SCOPE Hydrographical and chemical data made during the German Meteor 60/5 cruise in the mid-latitude North Atlantic in March/April 2004. DATA DESCRIPTION The methods, corrections and post-cruise calibration procedures are described below. TOTAL ALKALINITY Potentiometric titration [Mintrop et al., 2000]. CRM corrected from 4 separate batches (batch # 58, 60, 63 and 64). The mean difference between measurements and the Certified values was -1.19 ( 0.69 (mol kg-1 (95% confidence interval, n=69). Alkalinity values have been adjusted to the certified value by addition of this mean offset. Precision of the total alkalinity single measurement was 4.28 (mol kg-1 (95% confidence interval), determined from measurements of duplicate samples. The total alkalinity is corrected by adding 1.6 umol/kg from the original data based on cross over with contemporary CLIVAR cruises. The background and procedures of the correction is described in detail by Tanhua and Wallace (2005). DISSOLVED INORGANIC CARBON (DIC) Coulometric titration [Johnson et al., 1993]. CRM corrected from 4 separate batches (batch # 58, 60, 63 and 64). Mean offset between our measurements and the Certified Values was 1.02 ( 0.44 (mol kg-1 (95% confidence interval, n = 88). Measured DIC concentrations were therefore adjusted to the manometric Certified calibration scale by subtraction of this mean offset. Precision of the measurements was 1.49 (mol kg-1 (95% confidence interval), as determined from analyses of duplicate samples. The background and procedures of the correction is described in detail by Tanhua and Wallace [2005]. NUTRIENTS The nutrient data was compared with crossover stations for contemporary CLIVAR lines (A16, A22 and A20). M60 Silicate values too low in the high concentration range compared to CLIVAR data, therefore the following corrections were made; For Si<20 (mol/kg; Si(corr)=Si For 2030 (mol/kg; Si(corr)=Si+2 M60 nitrate values are low in the high concentration range, therefore the following corrections were made; NO3<10 (mol/kg; NO3(corr)=NO3 NO3>10 (mol/kg; NO3(corr)=NO3+(NO3-10)*0.05 The PO4 data from M60/5 was subject to some analytical difficulties and were of noticeably poorer quality than the other parameters. CFCs The CFC measurements performed during M60/5 were made on an analytical system similar to that described by Bullister and Weiss and are reported on the SIO98 scale. The analytical precision was determined to be 0.7 and 0.6 % for CFC-12, CFC-11, respectively, as calculated from duplicate samples, typically at two depths per station. We determined a sampling blank of 0.007, 0.010 and 0.045 pmol/kg for CFC-12, CFC-11 and CCl4, respectively, determined as the median value of 18 deep water samples in the eastern basin. The data has been corrected for this sampling blank. DATA FORMAT The data are supplied in comma separated format (.csv). The header records; Station#, Depth (m), Date (yyyy,mm,dd), Lat (АN), Lon (АE), Temperature, Salinity, CFC-12 (pmol/kg), CFC-11 (pmol/kg), CCl4 (pmol/kg), Oxygen (umol/kg), SiO4 (umol/kg), PO4 (umol/kg), NO3 (umol/kg), NO2 (umol/kg), DIC-calc (umol/kg), Total Alkalinity (umol/kg). Missing data are denoted with –999.9, the units for the revised data are identical with the original data. REFERENCES Bullister, J.L. and Weiss, R.F., 1988. Determination of CCl3F and CCl2F2 in seawater and air. Deep-Sea Research, 35(5): 839-853. Mintrop, L., F.F. Perez, M. Gonzalez-Davila, J.M. Santana-Casiano, and A. Kіrtzinger (2000), Alkalintiy determination by potentiometri: intercalibration using three different methods, Scienc. Mar., 26, 1, 23-37. Johnson, K., K.D. Willis, D.B. Butler, W.K. Johnson, and C.S. Wong (1993), Coulometric carbon dioxide analysis for marine studies: Maximizing the performance of an automated gas extraction system and coulometric detector, Mar. Chem., 44 (2-4), 167-188. Tanhua, T., and D.W.R. Wallace (2005), Consistency of TTO-NAS Inorganic Carbon Data with modern measurements, Geophys. Res. Lett., 32, L14618, doi:10.1029/2005GL032348. Ыс€ЋЌ­УФЬPQb‰Š‘—šVW]_3 ™ Л ъ t u { | ‚ „ U V \ ^    8 9 c d { ц э ю  3О иY,Єжћ№ћчћлчдчћћвћЪћРћКћРћКћћЕБЋЉЋЉћЄœЄœЄœЄћЄœЄœЄћ—ћћ—ЕmH sH  jm№mHsHmHsHH* jm№aJ jБ№mH sH  H*mH sH  jm№aJmH sH  jБ№mH sH >* 0JmH sH jUmH sH jUmH sH >*B*mH phџsH mH sH ;)*7DтјХЦЬPQbЗИЩњЎ3 ‰ ™ š Л ъ Ќ    §§§§§§§ї§ё§я§§§§§§ёё§§ёёёё§„^„„Ф^„Фиў  ‡ + Y z { ц 23ИЙО њћќ@AV\]КЪЫЬ秧§§§§§§§§§§§§§§§§§§§§§§§§§§§зиYZ./,-жзи§їёёёёёёёч „а„0§^„а`„0§„а^„а„`„ жићmH sH  1hА‚. 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