# # 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: d18O 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 (d18O) # 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: 20220308 # year month day delta O-18 (per mil) 1995 02 09 0.976 1995 02 10 0.954 1995 02 16 1.025 1995 02 17 0.833 1995 02 24 0.962 1995 02 25 1.137 1995 03 03 1.097 1995 03 10 1.008 1995 03 12 1.065 1995 03 18 1.007 1995 03 19 1.159 1995 03 25 1.138 1995 03 26 0.911 1995 04 02 1.204 1995 04 03 1.079 1995 04 12 0.966 1995 04 16 1.033 1995 04 18 1.072 1995 04 24 1.020 1995 04 28 1.180 1995 04 29 1.072 1995 05 09 1.144 1995 05 14 1.041 1995 05 16 0.871 1995 05 21 1.006 1995 05 27 1.113 1995 05 28 0.749 1995 06 03 1.113 1995 06 04 0.904 1995 06 11 0.977 1995 06 19 1.061 1995 06 24 0.761 1995 07 03 1.058 1995 07 09 0.981 1995 07 15 0.953 1995 07 20 1.000 1995 07 23 1.091 1995 07 30 0.663 1995 08 06 0.909 1995 08 14 0.909 1995 08 19 0.960 1995 08 25 0.713 1995 09 06 0.927 1995 09 12 0.975 1995 09 21 0.994 1995 09 26 0.904 1995 10 03 0.944 1995 10 05 1.124 1995 10 08 1.194 1995 10 16 1.065 1995 10 23 1.092 1995 10 25 1.290 1995 10 29 0.964 1995 11 11 1.068 1995 11 13 1.180 1995 11 16 0.969 1995 11 18 1.201 1995 11 26 0.956 1995 12 02 1.196 1995 12 04 1.038 1995 12 09 1.111 1995 12 11 1.245 1995 12 18 1.086 1995 12 21 1.227 1995 12 26 0.921 1995 12 31 1.138 1996 01 09 1.126 1996 01 13 1.113 1996 01 22 1.148 1996 01 28 0.986 1996 02 08 1.093 1996 02 19 1.085 1996 02 28 0.953 1996 03 29 0.971 1996 04 17 1.032 1996 04 18 1.026 1996 04 27 0.737 1996 05 13 0.775 1996 05 24 0.965 1996 05 30 0.774 1996 06 03 0.949 1996 06 14 0.790 1996 06 24 0.768 1996 07 03 0.903 1996 07 12 0.820 1996 07 19 0.858 1996 07 30 0.718 1996 08 12 0.799 1996 08 21 0.845 1996 09 01 0.664 1996 09 22 0.921 1996 09 30 0.781 1996 10 10 0.965 1996 10 22 0.924 1996 10 25 0.746 1996 11 05 0.970 1996 11 18 0.939 1996 11 22 0.808 1996 12 07 0.797 1996 12 14 0.730 1997 01 22 0.737 1997 04 29 0.654 1997 05 08 0.689 1997 05 15 0.666 1997 05 22 0.671 1997 06 01 0.799 1997 06 12 0.657 1997 07 05 0.717 1997 07 09 0.508 1997 07 14 0.605 1997 07 24 0.575 1997 07 29 0.596 1997 08 11 0.811 1997 08 15 0.691 1997 08 16 0.760 1997 08 25 0.690 1997 09 03 0.832 1997 09 10 0.719 1997 09 15 0.751 1997 09 23 0.739 1997 10 03 0.826 1997 10 14 0.728 1997 10 18 0.723 1997 10 19 0.798 1997 11 04 0.846 1997 11 10 0.962 1997 11 18 0.824 1997 11 27 0.766 1997 12 01 0.899 1997 12 09 0.886 1997 12 17 0.870 1997 12 23 0.839 1997 12 31 0.870 1998 01 11 0.875 1998 01 14 0.897 1998 01 20 0.899 1998 01 27 0.771 1998 02 04 0.924 1998 02 13 0.906 1998 02 20 0.803 1998 02 26 0.845 1998 03 05 1.007 1998 03 12 0.785 1998 03 19 0.647 1998 03 26 0.794 1998 04 02 0.708 1998 04 09 0.837 1998 04 17 0.758 1998 04 25 0.779 1998 05 01 0.669 1998 05 06 0.837 1998 05 15 0.597 1998 05 21 0.631 1998 05 28 0.717 1998 06 03 0.649 1998 06 09 0.750 1998 06 16 0.619 1998 06 25 0.668 1998 07 02 0.643 1998 07 08 0.785 1998 07 13 0.683 1998 07 27 0.689 1998 08 01 0.652 1998 08 07 0.769 1998 08 18 0.687 1998 08 25 0.652 1998 08 30 0.536 1998 09 15 0.706 1998 09 22 0.937 1998 10 02 0.764 1998 10 12 0.769 1998 10 28 0.831 1998 11 07 0.831 1998 11 12 0.796 1998 11 29 1.032 1998 12 10 0.749 1998 12 25 0.866 1999 01 14 0.770 1999 01 21 0.994 1999 01 31 0.824 1999 02 09 0.975 1999 03 04 0.930 1999 03 07 0.764 1999 03 10 0.801 1999 03 22 0.773 1999 03 29 0.641 1999 04 06 0.827 1999 04 14 0.854 1999 04 19 0.608 1999 04 27 0.564 1999 05 05 0.819 1999 05 11 0.726 1999 05 18 0.536 1999 05 26 0.765 1999 06 01 0.686 1999 06 10 0.659 1999 06 14 0.720 1999 06 27 0.521 1999 06 29 0.615 1999 07 06 0.664 1999 07 14 0.644 1999 07 20 0.799 1999 07 28 0.551 1999 08 04 0.583 1999 08 10 0.608 1999 08 19 0.604 1999 08 24 0.732 1999 08 30 0.674 1999 09 09 0.699 1999 09 13 0.719 1999 09 22 0.665 1999 09 28 0.782 1999 10 06 0.675 1999 10 12 0.783 1999 10 19 0.614 1999 10 25 0.657 1999 11 02 0.851 1999 11 10 0.705 1999 11 17 0.655 1999 11 23 0.784 1999 11 30 0.794 1999 12 06 0.756 1999 12 14 0.820 1999 12 20 0.771 1999 12 28 0.681 2000 01 03 0.935 2000 01 08 0.878 2000 01 17 0.822 2000 01 26 0.854 2000 02 03 0.928 2000 02 13 0.887 2000 02 19 0.824 2000 02 27 0.815 2000 03 07 0.962 2000 03 15 0.939 2000 03 28 0.860 2000 03 31 0.770 2000 04 11 0.821 2000 04 14 0.834 2000 04 22 0.718 2000 04 25 0.727 2000 05 07 0.699 2000 05 11 0.745 2000 05 23 0.641 2000 05 30 0.773 2000 06 08 0.658 2000 06 17 0.656 2000 06 22 0.462 2000 07 01 0.546 2000 07 10 0.676 2000 07 22 0.692 2000 07 26 0.624 2000 08 10 0.687 2000 08 14 0.690 2000 08 26 0.775 2000 08 30 0.723 2000 09 10 0.720 2000 09 17 0.781 2000 09 27 0.692 2000 10 02 0.808 2000 10 14 0.748 2000 10 17 0.809 2000 11 03 0.759 2000 11 09 0.846 2000 11 17 0.775 2000 11 23 0.884 2000 11 27 0.803 2000 12 14 0.946 2000 12 24 0.921 2000 12 29 0.903 2001 01 02 0.903 2001 01 26 0.987 2001 01 30 0.948 2002 02 02 0.925 2002 02 04 0.902 2002 02 08 0.976 2002 02 13 1.046 2002 02 18 0.941 2002 02 25 0.956 2002 03 05 0.940 2002 03 15 0.953 2002 03 19 1.153 2002 03 25 0.890 2002 03 31 0.902 2002 04 10 1.117 2002 04 17 0.914 2002 04 22 0.829 2002 05 01 0.958 2002 05 06 0.833 2002 05 13 0.697 2002 05 19 0.775 2002 05 27 0.845 2002 06 03 0.991 2002 06 12 0.838 2002 06 17 0.782 2002 06 24 0.761 2002 07 01 0.761 2002 07 09 0.758 2002 07 15 0.787 2002 07 22 0.916 2002 07 29 0.708 2002 08 06 0.794 2002 08 12 0.798 2002 08 19 0.786 2002 08 27 0.988 2002 09 02 0.838 2002 09 11 0.811 2002 09 20 1.021 2002 09 23 0.793 2002 09 30 0.869 2002 10 07 1.023 2002 10 14 0.912 2002 10 21 0.845 2002 10 30 0.883 2002 11 06 0.918 2002 11 12 0.909 2002 11 19 0.987 2002 11 27 1.185 2002 12 02 0.945 2002 12 09 1.103 2002 12 16 1.024 2002 12 26 0.992 2002 12 30 0.939 2003 01 05 1.061 2003 01 11 1.180 2003 01 21 1.135 2003 02 12 0.896 2003 02 17 0.924 2003 02 25 1.059 2003 03 03 0.891 2003 03 11 1.008 2003 03 17 0.977 2003 03 25 1.009 2003 04 01 0.947 2003 04 07 0.961 2003 04 14 1.022 2003 04 21 0.958 2003 04 28 0.899 2003 05 05 0.963 2003 05 13 0.938 2003 05 19 1.026 2003 05 27 1.069 2003 06 05 0.948 2003 06 09 0.938 2003 06 16 0.894 2003 06 25 1.036 2003 07 08 0.970 2003 07 28 0.964 2003 08 03 0.860 2003 08 08 0.935 2003 08 12 0.936 2003 08 19 0.955 2003 08 26 0.964 2003 09 05 1.051 2003 09 14 1.006 2003 09 17 0.887 2003 09 23 1.048 2003 10 10 0.980 2003 10 18 1.121 2003 10 26 1.033 2003 10 31 1.179 2003 11 04 1.054 2003 11 08 1.035 2003 11 15 1.053 2003 11 20 1.103 2003 11 26 0.991 2003 12 03 1.013 2003 12 09 1.156 2003 12 28 1.060 2004 01 10 1.047 2004 01 14 1.012 2004 01 20 1.089 2004 01 24 1.022 2004 01 29 1.030 2004 02 09 1.066 2004 02 17 1.180 2004 02 24 1.108 2004 03 03 1.017 2004 03 16 1.020 2004 03 24 1.078 2004 03 30 1.042 2004 04 06 1.091 2004 04 13 0.998 2004 04 20 0.997 2004 04 27 0.971 2004 05 06 0.983 2004 05 11 0.976 2004 05 18 0.945 2004 05 28 0.945 2004 06 02 0.950 2004 06 08 0.947 2004 06 15 0.892 2004 06 25 0.947 2004 06 29 0.921 2004 07 14 0.961 2004 07 22 0.961 2004 07 30 0.913 2004 08 03 1.016 2004 08 11 0.935 2004 08 17 1.014 2004 08 17 0.898 2004 08 24 1.056 2004 08 30 0.990 2004 09 06 1.016 2004 09 17 0.922 2004 09 21 1.098 2004 09 28 0.952 2004 10 03 1.084 2004 10 10 1.076 2004 10 18 1.192 2004 10 27 1.061 2004 11 02 1.125 2004 11 08 1.073 2004 11 14 1.211 2004 11 22 1.178 2004 11 29 1.197 2004 12 06 1.123 2004 12 13 1.221 2004 12 20 1.124 2004 12 27 1.256 2005 01 03 1.256 2005 01 10 1.200 2005 01 17 1.174 2005 01 25 1.221 2005 02 03 0.727 2005 02 14 0.786 2005 02 26 -0.177 2005 03 07 0.712 2005 03 28 0.776 2005 06 06 0.541 2005 06 14 0.584 2005 07 03 0.508 2005 07 15 -14.694 2005 07 25 0.372 2005 10 03 -0.479 2005 10 20 0.442 2005 11 14 -0.520 2005 11 21 0.617 2005 11 29 0.401 2006 02 03 0.485 2006 02 14 0.457 2006 03 08 0.365 2006 03 13 0.384 2006 03 22 0.761 2006 06 06 0.583 2006 06 29 0.546 2006 07 09 -0.895 2006 07 29 0.638 2006 10 07 0.739 2006 10 17 0.498 2006 11 06 0.635 2006 11 15 0.659 2006 11 19 0.677 2007 02 05 0.790 2007 02 20 0.652 2007 03 02 0.683 2007 03 14 0.678 2007 03 29 0.701 2007 06 04 0.625 2007 06 11 0.637 2007 07 05 0.649 2007 07 30 0.699 2007 10 04 0.799 2007 10 16 0.604 2007 10 30 0.622 2007 11 15 0.616 2007 11 28 0.652 2008 02 15 0.549 2008 03 22 0.396 2008 04 09 0.433 2008 04 26 0.588 2008 06 12 0.478 2009 04 16 0.445 2009 05 13 0.568 2009 06 19 0.448 2009 07 15 0.383 2009 08 15 0.502 2009 09 15 0.446 2009 10 15 0.497 2009 12 16 0.603 2010 01 15 0.540 2010 02 05 -0.196 2010 04 07 -0.060 2010 05 01 0.576 2010 08 10 0.323 2010 10 16 0.643 2010 12 07 0.583 2011 02 15 0.786 2011 03 15 0.706 2011 04 20 0.653 2011 05 12 0.377 2011 06 17 0.502 2011 07 25 0.449 2011 08 15 0.535 2011 09 22 0.492 2011 11 03 0.647 2011 12 12 0.634 2012 01 10 0.655 2012 02 19 0.857 2012 03 16 0.829 2012 04 18 0.642 2012 05 15 0.675 2012 06 11 0.777 2012 07 17 0.682 2012 08 16 0.748 2012 09 17 0.850 2012 10 12 0.659 2012 11 20 0.849 2012 12 17 0.863 2013 01 20 0.957 2013 02 09 0.451 2013 03 12 0.351 2013 04 24 0.365 2013 05 31 0.316 2013 06 10 0.242 2013 07 25 0.313 2013 08 18 0.290 2013 09 24 0.310 2013 11 24 0.365 2013 12 18 0.345 2014 01 26 0.225 2014 02 13 0.279 2014 03 19 0.215 2014 04 20 -0.007 2014 05 12 -0.009 2014 06 11 -0.044 2014 07 11 0.014 2014 09 09 -0.016 2014 10 03 0.143 2014 11 09 0.187 2014 12 23 0.111 2015 01 09 0.233 2015 02 16 1.120 2015 03 11 1.139 2015 04 20 1.079 2015 05 18 0.960 2015 06 15 1.069 2015 07 14 1.034 2015 08 16 1.040 2015 10 15 1.053 2015 11 16 1.224 2015 12 13 1.246 2016 01 08 1.189 2016 02 06 1.038 2016 04 13 1.011 2016 06 09 0.930 2016 08 02 0.848 2016 10 02 0.978 2016 12 08 1.163 2017 02 09 1.201 2017 03 12 1.115 2017 04 19 1.053 2017 05 06 0.981 2017 06 08 0.917 2017 07 06 0.857 2017 08 04 0.839 2017 09 19 0.879 2017 10 14 0.887 2017 11 10 0.913 2017 12 07 0.951 2018 01 15 0.916 2018 02 02 0.806 2018 02 15 0.939 2018 03 22 0.761 2018 04 18 0.811 2018 05 03 0.793 2018 06 19 0.692 2018 07 19 0.693 2018 08 23 0.719 2018 09 21 0.441 2018 10 15 0.364 2018 12 16 0.445 2019 01 17 0.935 2019 01 28 0.933 2019 02 04 1.981 2019 02 19 0.816 2019 02 24 0.823 2019 03 04 0.806 2019 03 12 0.782 2019 03 18 0.798 2019 03 25 0.710 2019 04 04 0.809 2019 04 08 0.173 2019 04 16 0.800 2019 04 25 0.827 2019 05 02 0.773 2019 05 06 0.728 2019 05 14 0.808 2019 05 16 0.762 2019 05 20 0.850 2019 05 30 0.763 2019 06 03 0.786 2019 06 10 0.753 2019 06 19 0.702 2019 07 05 0.546 2019 07 08 0.660 2019 07 19 0.661 2019 07 26 0.547 2019 07 30 0.637 2019 08 07 0.678 2019 08 17 0.664 2019 09 23 0.774 2019 10 04 0.666 2019 10 08 0.784 2019 10 17 0.750 2019 10 24 0.795 2019 10 28 0.828 2019 11 10 0.847 2019 11 15 0.706 2019 11 20 0.874 2019 11 27 0.758 2019 12 05 0.786 2019 12 10 0.753 2019 12 17 0.703 2019 12 23 0.765 2019 12 30 0.788 2020 01 06 0.723 2020 01 15 0.787 2020 01 20 0.859 2020 01 26 0.821 2020 02 04 0.680 2020 02 17 0.688 2020 03 02 0.722 2020 03 15 0.752 2020 03 30 0.781 2020 04 14 0.739 2020 04 28 0.754 2020 05 10 0.666 2020 05 27 0.692 2020 06 10 0.660 2020 06 24 0.577 2020 07 10 0.627 2020 07 18 0.686 2020 07 26 0.673 2020 08 10 0.660 2020 08 25 0.765 2020 09 05 0.673 2020 09 20 0.753 2020 10 10 0.799 2020 10 26 0.881 2020 11 02 0.826 2020 11 17 0.833 2020 12 01 0.903 2020 12 16 0.911 2020 12 30 0.909 2021 01 13 0.866 2021 01 26 0.709 2021 02 03 0.624 2021 02 09 0.660 2021 02 24 0.722 2021 03 09 0.798 2021 03 23 0.422 2021 04 09 0.638 2021 04 22 0.698 2021 06 01 0.557 2021 06 15 0.411 2021 06 29 0.629 2021 07 14 0.598 2021 08 10 0.695 2021 08 24 0.634 2021 09 16 0.626 2021 09 21 0.644 2021 10 05 0.682 2021 10 19 0.783 2021 11 16 0.771 2021 11 30 0.688 2021 12 14 0.834 2021 12 24 0.678