# # These data are freely available for use in education and research. If the data are used for scientific publication and/or presentation, it is necessary to get approval of the data provider in advance. Judging from the nature of the data usage, the data provider may require fair acknowledgement including co-authorship to the data user. # For technical reasons, the data may be revised without any notice. This data file must be obtained from the original data site and not be re-distributed. For more information, please contact with the data provider. # # CATEGORY: d13C instantaneous data (air sampling observation) # STATION NAME : Syowa Station, Antarctica # LOCATION: 69.00 S, 39.58 E # CONTRIBUTOR: National Institute of Polar Research and Tohoku University # CONTACT PERSON: Daisuke Goto (goto.daisuke@nipr.ac.jp) # PARAMETER: carbon isotope ratio of CO2 (d13C) # COVERING PERIOD: 1995-02-09 2021-12-24 # DATA FREQUENCY: event # MEASUREMENT UNIT: per mil # MEASUREMENT METHOD: Mass spectorometer # SAMPLING TYPE: flask # MEASUREMENT SCALE: Tohoku University scale # REMARKS: date are shown in local time (UTC+3) # VERSION: 20230317 # year month day delta C-13 (per mil) 1995 02 09 -7.750 1995 02 10 -7.740 1995 02 16 -7.715 1995 02 17 -7.773 1995 02 24 -7.803 1995 02 25 -7.769 1995 03 03 -7.752 1995 03 10 -7.815 1995 03 12 -7.700 1995 03 18 -7.789 1995 03 19 -7.787 1995 03 25 -7.777 1995 03 26 -7.847 1995 04 02 -7.785 1995 04 03 -7.767 1995 04 12 -7.810 1995 04 16 -7.865 1995 04 18 -7.816 1995 04 24 -7.884 1995 04 28 -7.831 1995 04 29 -7.788 1995 05 09 -7.801 1995 05 14 -7.770 1995 05 16 -7.859 1995 05 21 -7.821 1995 05 27 -7.807 1995 05 28 -7.814 1995 06 03 -7.802 1995 06 04 -7.808 1995 06 11 -7.838 1995 06 19 -7.758 1995 06 24 -7.848 1995 07 03 -7.812 1995 07 09 -7.837 1995 07 15 -7.846 1995 07 20 -7.807 1995 07 23 -7.816 1995 07 30 -7.837 1995 08 06 -7.867 1995 08 14 -7.822 1995 08 19 -7.811 1995 08 25 -7.848 1995 09 06 -7.829 1995 09 12 -7.856 1995 09 21 -7.809 1995 09 26 -7.845 1995 10 03 -7.853 1995 10 05 -7.811 1995 10 08 -7.812 1995 10 16 -7.876 1995 10 23 -7.814 1995 10 25 -7.846 1995 10 29 -7.866 1995 11 11 -7.847 1995 11 13 -7.818 1995 11 16 -7.857 1995 11 18 -7.850 1995 11 26 -7.894 1995 12 02 -7.801 1995 12 04 -7.839 1995 12 09 -7.811 1995 12 11 -7.806 1995 12 18 -7.853 1995 12 21 -7.786 1995 12 26 -7.857 1995 12 31 -7.821 1996 01 09 -7.856 1996 01 13 -7.860 1996 01 22 -7.804 1996 01 28 -7.845 1996 02 08 -7.797 1996 02 19 -7.860 1996 02 28 -7.814 1996 03 29 -7.845 1996 04 17 -7.808 1996 04 18 -7.773 1996 04 27 -7.856 1996 05 13 -7.816 1996 05 24 -7.782 1996 05 30 -7.814 1996 06 03 -7.798 1996 06 14 -7.807 1996 06 24 -7.798 1996 07 03 -7.760 1996 07 12 -7.860 1996 07 19 -7.742 1996 07 30 -7.848 1996 08 12 -7.884 1996 08 21 -7.801 1996 09 01 -7.797 1996 09 22 -7.844 1996 09 30 -7.836 1996 10 10 -7.868 1996 10 22 -7.820 1996 10 25 -7.860 1996 11 05 -7.769 1996 11 18 -7.867 1996 11 22 -7.866 1996 12 07 -7.872 1996 12 14 -7.884 1997 01 22 -7.832 1997 04 29 -7.886 1997 05 08 -7.893 1997 05 15 -7.899 1997 05 22 -7.875 1997 06 01 -7.873 1997 06 12 -7.923 1997 07 05 -7.862 1997 07 09 -7.889 1997 07 14 -7.910 1997 07 24 -7.914 1997 07 29 -7.898 1997 08 11 -7.842 1997 08 15 -7.837 1997 08 16 -7.912 1997 08 25 -7.891 1997 09 03 -7.859 1997 09 10 -7.897 1997 09 15 -7.925 1997 09 23 -7.922 1997 10 03 -7.886 1997 10 14 -7.885 1997 10 18 -7.918 1997 10 19 -7.955 1997 11 04 -7.937 1997 11 10 -7.882 1997 11 18 -7.921 1997 11 27 -7.953 1997 12 01 -7.902 1997 12 09 -7.941 1997 12 17 -7.951 1997 12 23 -7.933 1997 12 31 -7.985 1998 01 11 -7.946 1998 01 14 -7.994 1998 01 20 -7.924 1998 01 27 -7.974 1998 02 04 -7.926 1998 02 13 -7.917 1998 02 20 -7.943 1998 02 26 -7.971 1998 03 05 -7.927 1998 03 12 -7.960 1998 03 19 -7.946 1998 03 26 -7.941 1998 04 02 -7.910 1998 04 09 -7.906 1998 04 17 -7.988 1998 04 25 -7.974 1998 05 01 -7.955 1998 05 06 -7.930 1998 05 15 -8.024 1998 05 21 -7.929 1998 05 28 -7.983 1998 06 03 -7.963 1998 06 09 -7.918 1998 06 16 -8.034 1998 06 25 -7.975 1998 07 02 -7.985 1998 07 08 -7.941 1998 07 13 -8.002 1998 07 27 -8.043 1998 08 01 -8.003 1998 08 07 -7.985 1998 08 18 -8.015 1998 08 25 -8.069 1998 08 30 -8.027 1998 09 15 -8.059 1998 09 22 -7.969 1998 10 02 -7.986 1998 10 12 -8.053 1998 10 28 -7.979 1998 11 07 -7.993 1998 11 12 -8.054 1998 11 29 -8.042 1998 12 10 -8.088 1998 12 25 -8.025 1999 01 14 -8.055 1999 01 21 -7.964 1999 01 31 -8.017 1999 02 09 -8.000 1999 03 04 -8.013 1999 03 07 -8.024 1999 03 10 -8.022 1999 03 22 -7.959 1999 03 29 -7.969 1999 04 06 -7.984 1999 04 14 -7.989 1999 04 19 -8.011 1999 04 27 -7.991 1999 05 05 -8.024 1999 05 11 -7.986 1999 05 18 -8.007 1999 05 26 -7.911 1999 06 01 -8.004 1999 06 10 -8.018 1999 06 14 -8.020 1999 06 27 -7.981 1999 06 29 -7.989 1999 07 06 -7.997 1999 07 14 -7.981 1999 07 20 -8.017 1999 07 28 -8.000 1999 08 04 -8.000 1999 08 10 -7.986 1999 08 19 -8.029 1999 08 24 -8.004 1999 08 30 -8.016 1999 09 09 -7.998 1999 09 13 -7.992 1999 09 22 -8.039 1999 09 28 -8.015 1999 10 06 -8.041 1999 10 12 -8.049 1999 10 19 -8.003 1999 10 25 -8.050 1999 11 02 -8.027 1999 11 10 -8.029 1999 11 17 -8.081 1999 11 23 -8.032 1999 11 30 -8.028 1999 12 06 -8.007 1999 12 14 -8.028 1999 12 20 -8.081 1999 12 28 -8.071 2000 01 03 -8.019 2000 01 08 -8.007 2000 01 17 -8.039 2000 01 26 -8.041 2000 02 03 999.000 2000 02 13 999.000 2000 02 19 999.000 2000 02 27 999.000 2000 03 07 999.000 2000 03 15 999.000 2000 03 28 999.000 2000 03 31 999.000 2000 04 11 999.000 2000 04 14 999.000 2000 04 22 999.000 2000 04 25 999.000 2000 05 07 999.000 2000 05 11 999.000 2000 05 23 999.000 2000 05 30 999.000 2000 06 08 999.000 2000 06 17 999.000 2000 06 22 999.000 2000 07 01 999.000 2000 07 10 999.000 2000 07 22 999.000 2000 07 26 999.000 2000 08 10 999.000 2000 08 14 999.000 2000 08 26 999.000 2000 08 30 999.000 2000 09 10 999.000 2000 09 17 999.000 2000 09 27 999.000 2000 10 02 999.000 2000 10 14 999.000 2000 10 17 999.000 2000 11 03 999.000 2000 11 09 999.000 2000 11 17 999.000 2000 11 23 999.000 2000 11 27 999.000 2000 12 14 999.000 2000 12 24 999.000 2000 12 29 999.000 2001 01 02 999.000 2001 01 26 999.000 2001 01 30 999.000 2002 02 02 -7.981 2002 02 04 -8.039 2002 02 08 -8.015 2002 02 13 -8.027 2002 02 18 -8.013 2002 02 25 -8.030 2002 03 05 -8.021 2002 03 15 -7.975 2002 03 19 -7.971 2002 03 25 -7.991 2002 03 31 -7.964 2002 04 10 -8.001 2002 04 17 -8.014 2002 04 22 -8.007 2002 05 01 -7.982 2002 05 06 -8.011 2002 05 13 -8.008 2002 05 19 -8.003 2002 05 27 -7.997 2002 06 03 -7.976 2002 06 12 -7.995 2002 06 17 -8.024 2002 06 24 -8.043 2002 07 01 -8.044 2002 07 09 -8.022 2002 07 15 -8.010 2002 07 22 -7.973 2002 07 29 -8.015 2002 08 06 -8.058 2002 08 12 -8.016 2002 08 19 -8.066 2002 08 27 -8.022 2002 09 02 -8.020 2002 09 11 -8.043 2002 09 20 -8.002 2002 09 23 -8.055 2002 09 30 -8.046 2002 10 07 -8.053 2002 10 14 -8.048 2002 10 21 -8.028 2002 10 30 -8.026 2002 11 06 -8.026 2002 11 12 -8.043 2002 11 19 -8.096 2002 11 27 -8.070 2002 12 02 -8.122 2002 12 09 -8.038 2002 12 16 -8.019 2002 12 26 -8.080 2002 12 30 -8.035 2003 01 05 -8.050 2003 01 11 -8.070 2003 01 21 -8.049 2003 02 12 -8.087 2003 02 17 -8.093 2003 02 25 -8.091 2003 03 03 -8.060 2003 03 11 -8.039 2003 03 17 -8.093 2003 03 25 -8.047 2003 04 01 -8.096 2003 04 07 -8.055 2003 04 14 -8.110 2003 04 21 -8.062 2003 04 28 -8.076 2003 05 05 -8.035 2003 05 13 -8.094 2003 05 19 -8.030 2003 05 27 -8.060 2003 06 05 -8.093 2003 06 09 -8.081 2003 06 16 -8.107 2003 06 25 -8.050 2003 07 08 -8.043 2003 07 28 -8.075 2003 08 03 -8.061 2003 08 08 -8.132 2003 08 12 -8.064 2003 08 19 -8.112 2003 08 26 -8.098 2003 09 05 -8.116 2003 09 14 -8.118 2003 09 17 -8.105 2003 09 23 -8.115 2003 10 10 -8.080 2003 10 18 -8.143 2003 10 26 -8.070 2003 10 31 -8.119 2003 11 04 -8.071 2003 11 08 -8.085 2003 11 15 -8.073 2003 11 20 -8.105 2003 11 26 -8.098 2003 12 03 -8.169 2003 12 09 -8.123 2003 12 28 -8.096 2004 01 10 -8.091 2004 01 14 -8.110 2004 01 20 -8.108 2004 01 24 -8.089 2004 01 29 -8.155 2004 02 09 -8.079 2004 02 17 -8.062 2004 02 24 -8.069 2004 03 03 -8.119 2004 03 16 -8.082 2004 03 24 -8.077 2004 03 30 -8.087 2004 04 06 -8.068 2004 04 13 -8.046 2004 04 20 -8.064 2004 04 27 -8.070 2004 05 06 -8.096 2004 05 11 -8.060 2004 05 18 -8.110 2004 05 28 -8.069 2004 06 02 -8.111 2004 06 08 -8.095 2004 06 15 -8.091 2004 06 25 -8.102 2004 06 29 -8.100 2004 07 14 -8.091 2004 07 22 -8.095 2004 07 30 -8.138 2004 08 03 -8.083 2004 08 11 -8.108 2004 08 17 -8.088 2004 08 17 -8.126 2004 08 24 -8.104 2004 08 30 -8.101 2004 09 06 -8.095 2004 09 17 -8.172 2004 09 21 -8.103 2004 09 28 -8.157 2004 10 03 -8.105 2004 10 10 -8.090 2004 10 18 -8.102 2004 10 27 -8.135 2004 11 02 -8.108 2004 11 08 -8.140 2004 11 14 -8.110 2004 11 22 -8.115 2004 11 29 -8.087 2004 12 06 -8.117 2004 12 13 -8.112 2004 12 20 -8.129 2004 12 27 -8.107 2005 01 03 -8.078 2005 01 10 -8.073 2005 01 17 -8.120 2005 01 25 -8.077 2005 02 03 -8.087 2005 02 14 -8.077 2005 02 26 -8.389 2005 03 07 -8.089 2005 03 28 -8.103 2005 06 06 -8.184 2005 06 14 -8.202 2005 07 03 -8.260 2005 07 15 -27.390 2005 07 25 -8.394 2005 10 03 -9.303 2005 10 20 -8.487 2005 11 14 -9.349 2005 11 21 -8.297 2005 11 29 -8.378 2006 02 03 -8.295 2006 02 14 -8.480 2006 03 08 -8.622 2006 03 13 -8.487 2006 03 22 -8.147 2006 06 06 -8.187 2006 06 29 -8.170 2006 07 09 -8.721 2006 07 29 -8.199 2006 10 07 -8.208 2006 10 17 -8.330 2006 11 06 -8.176 2006 11 15 -8.154 2006 11 19 -8.175 2007 02 05 -8.118 2007 02 20 -8.174 2007 03 02 -8.150 2007 03 14 -8.147 2007 03 29 -8.119 2007 06 04 -8.132 2007 06 11 -8.145 2007 07 05 -8.153 2007 07 30 -8.144 2007 10 04 -8.158 2007 10 16 -8.201 2007 10 30 -8.235 2007 11 15 -8.205 2007 11 28 -8.201 2008 02 15 -8.199 2008 03 22 -8.185 2008 04 09 -8.201 2008 04 26 -8.154 2008 06 12 -8.164 2009 04 16 -8.213 2009 05 13 -8.204 2009 06 19 -8.217 2009 07 15 -8.201 2009 08 15 -8.178 2009 09 15 -8.216 2009 10 15 -8.196 2009 12 16 -8.162 2010 01 15 -8.223 2010 02 05 -8.238 2010 04 07 -8.213 2010 05 01 -8.220 2010 08 10 -8.437 2010 10 16 -8.258 2010 12 07 -8.252 2011 02 15 -8.243 2011 03 15 -8.242 2011 04 20 -8.207 2011 05 12 -8.223 2011 06 17 -8.201 2011 07 25 -8.253 2011 08 15 -8.237 2011 09 22 -8.234 2011 11 03 -8.229 2011 12 12 -8.219 2012 01 10 -8.248 2012 02 19 -8.209 2012 03 16 -8.194 2012 04 18 -8.204 2012 05 15 -8.180 2012 06 11 -8.195 2012 07 17 -8.228 2012 08 16 -8.245 2012 09 17 -8.226 2012 10 12 -8.201 2012 11 20 -8.241 2012 12 17 -8.257 2013 01 20 -8.251 2013 02 09 -8.247 2013 03 12 -8.261 2013 04 24 -8.274 2013 05 31 -8.275 2013 06 10 -8.270 2013 07 25 -8.290 2013 08 18 -8.294 2013 09 24 -8.300 2013 11 24 -8.296 2013 12 18 -8.296 2014 01 26 -8.291 2014 02 13 -8.328 2014 03 19 -8.307 2014 04 20 -8.316 2014 05 12 -8.298 2014 06 11 -8.318 2014 07 11 -8.304 2014 09 09 -8.333 2014 10 03 -8.344 2014 11 09 -8.359 2014 12 23 -8.335 2015 01 09 -8.328 2015 02 16 -8.239 2015 03 11 -8.261 2015 04 20 -8.274 2015 05 18 -8.302 2015 06 15 -8.269 2015 07 14 -8.288 2015 08 16 -8.313 2015 10 15 -8.309 2015 11 16 -8.327 2015 12 13 -8.364 2016 01 08 -8.393 2016 02 06 -8.464 2016 04 13 -8.468 2016 06 09 -8.480 2016 08 02 -8.475 2016 10 02 -8.491 2016 12 08 -8.488 2017 02 09 -8.419 2017 03 12 -8.430 2017 04 19 -8.444 2017 05 06 -8.417 2017 06 08 -8.416 2017 07 06 -8.462 2017 08 04 -8.435 2017 09 19 -8.464 2017 10 14 -8.480 2017 11 10 -8.471 2017 12 07 -8.498 2018 01 15 -8.479 2018 02 02 -8.540 2018 02 15 -8.504 2018 03 22 -8.534 2018 04 18 -8.446 2018 05 03 -8.492 2018 06 19 -8.444 2018 07 19 -8.522 2018 08 23 -8.503 2018 09 21 -8.582 2018 10 15 -8.795 2018 12 16 -8.703 2019 01 17 -8.449 2019 01 28 -8.531 2019 02 04 -8.056 2019 02 19 -8.512 2019 02 24 -8.492 2019 03 04 -8.486 2019 03 12 -8.501 2019 03 18 -8.489 2019 03 25 -8.515 2019 04 04 -8.499 2019 04 08 -8.699 2019 04 16 -8.488 2019 04 25 -8.482 2019 05 02 -8.480 2019 05 06 -8.473 2019 05 14 -8.473 2019 05 16 -8.520 2019 05 20 -8.497 2019 05 30 -8.454 2019 06 03 -8.489 2019 06 10 -8.460 2019 06 19 -8.501 2019 07 05 -8.500 2019 07 08 -8.507 2019 07 19 -8.519 2019 07 26 -8.535 2019 07 30 -8.552 2019 08 07 -8.548 2019 08 17 -8.537 2019 09 23 -8.536 2019 10 04 -8.536 2019 10 08 -8.535 2019 10 17 -8.565 2019 10 24 -8.597 2019 10 28 -8.564 2019 11 10 -8.540 2019 11 15 -8.582 2019 11 20 -8.548 2019 11 27 -8.572 2019 12 05 -8.530 2019 12 10 -8.597 2019 12 17 -8.576 2019 12 23 -8.553 2019 12 30 -8.577 2020 01 06 -8.616 2020 01 15 -8.566 2020 01 20 -8.535 2020 01 26 -8.555 2020 02 04 -8.546 2020 02 17 -8.545 2020 03 02 -8.514 2020 03 15 -8.524 2020 03 30 -8.527 2020 04 14 -8.491 2020 04 28 -8.536 2020 05 10 -8.495 2020 05 27 -8.522 2020 06 10 -8.513 2020 06 24 -8.493 2020 07 10 -8.537 2020 07 18 -8.520 2020 07 26 -8.535 2020 08 10 -8.536 2020 08 25 -8.547 2020 09 05 -8.570 2020 09 20 -8.533 2020 10 10 -8.547 2020 10 26 -8.552 2020 11 02 -8.553 2020 11 17 -8.554 2020 12 01 -8.572 2020 12 16 -8.565 2020 12 30 -8.546 2021 01 13 -8.583 2021 01 26 -8.552 2021 02 03 -8.535 2021 02 09 -8.550 2021 02 24 -8.558 2021 03 09 -8.459 2021 03 23 -8.517 2021 04 09 -8.502 2021 04 22 -8.509 2021 06 01 -8.542 2021 06 15 -8.686 2021 06 29 -8.507 2021 07 14 -8.527 2021 08 10 -8.520 2021 08 24 -8.542 2021 09 16 -8.566 2021 09 21 -8.534 2021 10 05 -8.580 2021 10 19 -8.522 2021 11 16 -8.585 2021 11 30 -8.561 2021 12 14 -8.592 2021 12 24 -8.566