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Atmospheric CO2 concentrations and δ13C values between New Zealand and Antarctica, 1998 to 2010: some puzzling results Cover

Atmospheric CO2 concentrations and δ13C values between New Zealand and Antarctica, 1998 to 2010: some puzzling results

Tellus B: Chemical and Physical Meteorology
Volume 64 (2012): Issue 1
By: ,  ,  ,  ,  ,   and    
Open Access
|Jan 2012
Figures & tables

Figures & Tables

Table 1. δ13C of atmospheric CO2 (New Zealand to Antarctica, 2004–2005)

Sample UTC UTC Latitude Longitude δ13C ‰ δ13C ‰a CO2b No. date hour (S) (E) (VPDB) (VPDB) ppmv 1 Dec. 31, 2004 09.39 44.00.31 173.19.30 −8.90 −8.72 374 2 Jan. 1, 2005 04.14 47.58.45 174.12.75 −9.19 −9.01 334 3 Jan. 1, 2005 09.20 49.02.30 174.29.59 −9.42 −9.24 351 4 Jan. 1, 2005 14.15 50.00.65 174.42.41 −8.94 −8.76 381 5 Jan. 1, 2005 19.35 51.02.33 174.56.50 −8.81 −8.63 382 6 Jan. 2, 2005 00.45 52.01.40 175.06.50 −9.00 −8.82 391 7 Jan. 2, 2005 05.50 52.58.61 175.01.16 −9.24 −9.06 363 8 Jan. 2, 2005 11.05 54.00.91 174.57.30 −8.96 −8.78 380 9 Jan. 2, 2005 16.58 54.58.03 174.50.19 −9.31 −9.13 362 10 Jan. 2, 2005 23.03 56.00.67 174.43.26 −9.08 −8.90 373 11 Jan. 3, 2005 04.29 57.01.55 174.38.31 −8.89 −8.71 393 12 Jan. 3, 2005 09.42 58.00.89 174.33.74 −9.29 −9.11 364 13 Jan. 3, 2005 14.56 59.00.19 174.26.53 −9.21 −9.03 368 14 Jan. 3, 2005 19.50 60.01.28 174.17.81 −8.85 −8.67 404 15 Jan. 4, 2005 00.25 61.01.05 174.33.10 −9.01 −8.83 378 16 Jan. 4, 2005 04.56 62.00.87 174.51.26 −9.40 −9.22 357 17 Jan. 4, 2005 21.20 63.02.60 175.08.13 −8.96 −8.78 380 18 Jan. 5, 2005 02.07 64.05.02 175.36.50 −9.44 −9.26 353 19 Jan. 5, 2005 06.08 65.00.34 175.48.15 −8.83 −8.65 381 20 Jan. 5, 2005 10.50 66.00.12 176.27.07 −9.19 −9.01 358 21 Jan. 5, 2005 16.00 66.59.91 177.32.16 −8.83 −8.65 399 22 Jan. 5, 2005 23.20 67.59.81 178.23.26 −9.24 −9.06 367 23 Jan. 6, 2005 07.55 68.57.58 178.02.44 −9.07 −8.89 375 24 Jan. 6, 2005 20.21 70.54.05 175.00.60 −9.05 −8.87 378

[i] aAfter correction for the N2O effect.

[ii] bThese values are only rough evaluations of the CO2 concentrations calculated from the CO2 pressure of each sample in the source of the mass spectrometer.

Fig. 1. 

δ13C values of the CO2 from discrete air samples collected between New Zealand and Antarctica during four cruises between 1998–1999 and 2003–2004. These results were already reported by Longinelli et al. (2007).

Fig. 2. 

Routes of the M/V Italica between New Zealand and Antarctica along which flask air samples were collected during eight cruises between 1997 and 2010. Atmospheric CO2 concentrations were measured during 1998–1999, 2003–2004, 2005–2006, 2009 and 2010 cruises.

Fig. 3. 

(a) δ13C of atmospheric CO2 from flask air samples collected between New Zealand and Antarctica during 2004–2005 cruise. CO2 concentrations could not be measured during this cruise. (b) δ13C of atmospheric CO2 from flask air samples (2004–2005 cruise). CO2 concentrations in each sample were roughly evaluated from CO2 gas pressure of each sample in the mass spectrometer source, after calibration with known CO2 volumes.

Table 2. δ13C of atmospheric CO2 (New Zealand to Antarctica, 2006)

Sample UTC UTC Latitude Longitude δ13C ‰ δ13C ‰a CO2 No. date hour (S) (E) (VPDB) (VPDB) ppmv 25 Jan. 1 02.58 47.58.20 174.35.00 −8.65 −8.48 377.1 26 Jan. 1 08.07 49.02.00 174.56.00 −8.72 −8.55 377.8 27 Jan. 1 12.11 49.56.00 175.13.08 −9.20 −9.03 378.0 28 Jan. 1 20.14 51.04.00 175.37.00 −9.78 −9.60 379.7 29 Jan. 2 0.33 52.00.87 175.44.21 −10.02 −9.84 380.5 30 Jan. 2 05.07 53.02.52 175.25.17 −10.02 −9.84 not avail. 31 Jan. 2 09.34 54.59.45 175.03.87 −11.22 −11.04 377.0 32 Jan. 2 14.19 54.59.19 174.49.35 −9.04 −8.86 not avail. 33 Jan. 2 19.53 56.05.70 174.59.84 −10.26 −10.08 not avail. 34 Jan. 3 01.08 57.00.07 175.34.90 −9.19 −9.01 377.3 35 Jan. 3 07.04 58.01.73 176.28.52 −9.60 −9.42 377.3 36 Jan. 3 12.48 58.59.59 177.32.44 −9.04 −8.86 377.4 37 Jan. 3 21.59 60.01.00 179.00.61 −13.63 −13.45 376.9 38 Jan. 4 05.12 61.02.00 179.00.11 −9.33 −9.15 376.8 39 Jan. 4 10.24 62.00.00 178.59.51 −9.00 −8.82 377.1 40 Jan. 4 19.17 63.03.00 178.59.51 −8.93 −8.75 376.8 41 Jan. 4 23.19 64.00.85 179.05.22 −8.78 −8.60 376.8 42 Jan. 5 04.58 65.00.69 179.00.77 −9.99 −9.81 376.5 43 Jan. 5 12.02 66.00.44 179.47.27 W −8.95 −8.77 377.1 44 Jan. 5 20.19 67.26.00 179.08.00 −10.61 −10.43 377.3 45 Jan. 6 01.54 68.03.11 179.54.84 −9.11 −8.93 377.3

[i] aAfter correction for the N2O effect.

Fig. 4. 

δ13C of atmospheric CO2 from flask air samples collected between New Zealand and Antarctica during 2005–2006 cruise.

Table 3. δ13C of atmospheric CO2 (New Zealand to Antarctica, 2009)

Sample UTC UTC Latitude δ13C ‰ δ13C ‰a CO2 No. date hour S Longitude Flask (VPDB) (VPDB) ppmv 1 Dec. 20 2:42 50.17.82 176.47.66 E Ff −9.05 −8.87 383.0 2 Dec. 20 19:15 53.20.27 178.49.30 E Fg −8.90 −8.72 383.3 3 Dec. 21 8:17 56.04.75 179.37.96 W Fh −8.87 −8.69 383.3 4 Dec. 21 20:00 58.46.00 177.45.10 W Fi −8.88 −8.70 383.0 5 Dec. 22 3:00 60.21.26 176.36.68 W Fl −8.85 −8.67 382.5 6 Dec. 22 10:51 62.13.01 175.09.52 W Fa −8.88 −8.70 382.7 7 Dec. 22 20:30 64.20.52 173.24.05 W Fb −8.88 −8.70 382.7 8 Dec. 23 9:47 66.43.25 171.51.59 W Fc −8.80 −8.62 382.5 9 Dec. 23 22:50 68.37.52 172.05.34 W Fd −8.79 −8.61 Not available 10 Dec. 24 12:45 70.08.05 173.34.82 W Fe −8.81 −8.63 382.4

[i] aAfter correction for the N2O effect.

Fig. 5. 

δ13C of atmospheric CO2 from flask air samples collected between New Zealand and Antarctica during five cruises between 1998–1999 and 2005–2006.

Fig. 6. 

δ13C of atmospheric CO2 from flask air samples and CO2 concentrations measured between New Zealand and Antarctica in December 2009.

Fig. 7. 

δ13C of atmospheric CO2 from flask air samples and CO2 concentrations measured between New Zealand and Antarctica in January 2010.

Table 4. δ13C of atmospheric CO2 (New Zealand to Antarctica, 2010)

Sample UTC UTC Latitude Longitude δ13C ‰ δ13C ‰a CO2 No. date hour S E Flask (VPDB) (VPDB) ppmv 1 Jan. 25 2:55 45.03.30 173.24.91 Da −8.88 −8.70 383.5 2 Jan. 25 10:52 46.59.09 173.44.28 Db −8.91 −8.73 383.4 3 Jan. 25 19:32 49.00.93 174.05.69 Dc −8.52 −8.34 383.0 4 Jan. 26 4:08 51.00.13 174.27.06 Dd −8.84 −8.66 383.1 5 Jan. 26 10:27 52.28.19 174.43.58 De −8.56 −8.38 382.3 6 Jan. 26 19:56 54.36.89 175.08.65 Df −8.56 −8.38 383.5 7 Jan. 27 0:18 55.36.94 175.20.72 Dg −8.54 −8.36 383.4 8 Jan. 27 3:54 56.29.59 175.31.99 Dh −8.60 −8.42 384.0 9 Jan. 27 7:25 57.19.90 175.42.96 Ca −8.79 −8.61 384.3 10 Jan. 27 10:22 58.02.24 175.02.24 Cb −8.60 −8.42 384.7 11 Jan. 27 18:26 60.00.09 176.18.89 Cc −8.67 −8.49 383.1 12 Jan. 27 22:42 61.00.07 176.32.75 Cd −8.58 −8.40 383.9 13 Jan. 28 3:11 62.00.37 174.47.77 Ce −8.55 −8.37 383.1 14 Jan. 28 7:33 63.00.11 177.02.62 Cf −8.55 −8.37 382.8 15 Jan. 28 10:57 63.46.82 177.14.88 Cg −8.57 −8.39 382.4 16 Jan. 28 19:04 65.41.43 177.46.65 Ch −8.58 −8.40 382.5 17 Jan. 28 22:36 66.31.99 177.59.74 Ba −8.54 −8.36 382.5 18 Jan. 28 2:41 67.32.17 178.00.31 Bb −8.56 −8.38 382.9 19 Jan. 29 7:02 68.33.27 177.25.74 Bc −8.59 −8.41 Not available 20 Jan. 29 11:08 69.28.50 176.27.27 Bd −8.55 −8.37 382.6

[i] aAfter correction for the N2O effect.

DOI: https://doi.org/10.3402/tellusb.v64i0.17472 | Journal eISSN: 1600-0889
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Language: English
Page range: 17472 - 17472
Submitted on: Feb 16, 2012
Accepted on: Oct 11, 2012
Published on: Jan 1, 2012
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
Keywords:
New Zealand to Antarctica,
flask air samples,
atmospheric CO2 concentrations,
carbon isotopic composition of CO2,
puzzling results

© 2012 Antonio Longinelli, Federico Giglio, Leonardo Langone, Lorenzo Moggio, Carlo Ori, Enricomaria Selmo, Maria Sgavetti, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 64 (2012): Issue 1
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