# file: brw_SF6_MM.dat # date: 2023-08-29 # # Sulfur hexafluoride (SF6) data from hourly in situ samples analyzed on a gas chromatograph located # at Pt. Barrow (BRW), Alaska (71.3 N, 156.6 W, elevation: 8 m). # # Atmospheric measurements from the NOAA/GML Chromatograph for Atmospheric Trace # Species (CATS) program. This GC replaces the RITS GCs operated during the # period of 1986 through 2000. This work was funded in part by the Atmospheric Chemistry Project of # NOAA's Climate and Global Change Program. # # Data use policy see https://gml.noaa.gov/hats/hats_datause.html # # Citation: # G.S. Dutton and B.D. Hall (2023), # Global Atmospheric Sulfur hexafluoride Dry Air Mole Fractions from the # NOAA GML Halocarbons in situ Network, 1998-2023, Version: 2023-08-29, # https://doi.org/10.7289/V5X0659V # # For contact information see https://gml.noaa.gov/about/stafflist.html # # Calibration scale used: WMO X2014 # More information about the calibration scale can be found at: https://gml.noaa.gov/ccl/ # # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # The CATS GCs sample air once an hour. Monthly median data are provided in parts-per-trillion, ppt. # Abbreviations used: # yr=year, mon=month, m=monthly data; gc=type of sample--in situ GC data, sd=standard deviation of samples, # n=number of samples, brw=Pt. Barrow, Alaska, sum=Summit, Greenland, nwr= Niwot Ridge, Colorado # mlo=Mauna Loa, Hawaii, smo = American Samoa, spo=South Pole, Antarctica # NAN=not a number or no data, and space(s) is the delimiter. # # The standard deviation (unc) reported is the estimate of insturmental precision. # The standard deviation (sd) reported is the estimate of atmospheric variability. # # year, month, monthly median of SF6 in ppt, uncertainty (unc), std. dev. (sd), number of samples # SF6catsBRWyr SF6catsBRWmon SF6catsBRWm SF6catsBRWunc SF6catsBRWsd SF6catsBRWn 1998 1 nan nan nan 0 1998 2 nan nan nan 0 1998 3 nan nan nan 0 1998 4 nan nan nan 0 1998 5 nan nan nan 0 1998 6 4.375 0.017 0.072 283 1998 7 4.382 0.016 0.088 627 1998 8 4.375 0.014 0.067 607 1998 9 4.387 0.012 0.067 301 1998 10 4.411 0.015 0.079 616 1998 11 4.450 0.018 0.088 530 1998 12 4.478 0.039 0.111 232 1999 1 4.477 0.023 0.055 537 1999 2 4.483 0.018 0.053 509 1999 3 4.490 0.016 0.051 662 1999 4 4.511 0.017 0.051 596 1999 5 4.523 0.018 0.053 422 1999 6 4.520 0.020 0.060 613 1999 7 4.537 0.019 0.058 643 1999 8 4.545 0.018 0.057 631 1999 9 4.537 0.016 0.051 634 1999 10 4.573 0.016 0.053 650 1999 11 4.602 0.017 0.057 630 1999 12 4.634 0.016 0.057 668 2000 1 4.650 0.016 0.059 375 2000 2 nan nan nan 0 2000 3 4.673 0.017 0.063 544 2000 4 4.708 0.016 0.062 485 2000 5 4.751 0.011 0.051 585 2000 6 4.773 0.017 0.063 432 2000 7 4.776 0.016 0.054 481 2000 8 4.763 0.016 0.058 395 2000 9 4.782 0.018 0.080 77 2000 10 4.798 0.018 0.063 322 2000 11 4.823 0.017 0.058 580 2000 12 4.860 0.016 0.062 680 2001 1 4.881 0.018 0.061 293 2001 2 4.902 0.024 0.062 445 2001 3 4.928 0.017 0.065 650 2001 4 4.951 0.017 0.065 594 2001 5 4.953 0.016 0.063 704 2001 6 4.968 0.018 0.065 654 2001 7 4.975 0.017 0.079 640 2001 8 5.001 0.017 0.088 582 2001 9 4.956 0.019 0.078 632 2001 10 4.961 0.018 0.052 471 2001 11 5.003 0.017 0.054 703 2001 12 5.028 0.017 0.056 445 2002 1 5.041 0.017 0.058 290 2002 2 5.056 0.017 0.058 496 2002 3 5.074 0.016 0.057 631 2002 4 5.087 0.018 0.056 506 2002 5 5.097 0.021 0.059 584 2002 6 5.110 0.020 0.069 530 2002 7 5.117 0.022 0.067 483 2002 8 5.128 0.022 0.067 529 2002 9 5.136 0.022 0.073 526 2002 10 5.154 0.022 0.068 552 2002 11 5.188 0.022 0.072 549 2002 12 5.245 0.013 0.068 569 2003 1 5.270 0.012 0.059 706 2003 2 5.312 0.011 0.060 490 2003 3 5.324 0.012 0.054 691 2003 4 5.339 0.011 0.047 644 2003 5 5.368 0.011 0.050 704 2003 6 5.408 0.014 0.064 459 2003 7 5.408 0.015 0.065 664 2003 8 5.401 0.015 0.068 619 2003 9 5.401 0.013 0.054 563 2003 10 5.432 0.013 0.056 620 2003 11 5.472 0.015 0.064 586 2003 12 5.487 0.019 0.064 462 2004 1 5.481 0.013 0.056 660 2004 2 5.506 0.012 0.059 532 2004 3 5.545 0.014 0.068 383 2004 4 5.619 0.013 0.063 311 2004 5 5.628 0.014 0.066 123 2004 6 5.643 0.012 0.052 151 2004 7 5.647 0.007 0.037 684 2004 8 5.649 0.008 0.036 595 2004 9 5.662 0.008 0.036 693 2004 10 5.694 0.009 0.039 422 2004 11 5.717 0.007 0.039 677 2004 12 5.756 0.008 0.040 726 2005 1 5.796 0.009 0.047 695 2005 2 5.818 0.008 0.045 665 2005 3 5.807 0.009 0.041 736 2005 4 5.838 0.008 0.041 680 2005 5 5.849 0.008 0.041 721 2005 6 5.896 0.009 0.067 703 2005 7 5.920 0.009 0.044 735 2005 8 5.906 0.008 0.041 711 2005 9 5.905 0.009 0.041 696 2005 10 5.919 0.008 0.039 723 2005 11 5.960 0.009 0.044 707 2005 12 5.978 0.010 0.044 725 2006 1 5.997 0.008 0.039 708 2006 2 6.013 0.009 0.044 637 2006 3 6.039 0.010 0.046 717 2006 4 6.061 0.008 0.044 633 2006 5 6.087 0.009 0.044 722 2006 6 6.107 0.008 0.043 704 2006 7 6.114 0.009 0.047 723 2006 8 6.101 0.009 0.043 725 2006 9 6.108 0.009 0.046 701 2006 10 6.134 0.010 0.046 661 2006 11 6.175 0.011 0.052 602 2006 12 6.220 0.022 0.070 581 2007 1 6.248 0.028 0.084 460 2007 2 6.253 0.015 0.071 592 2007 3 6.280 0.014 0.074 584 2007 4 6.302 0.029 0.075 353 2007 5 nan nan nan 0 2007 6 6.349 0.015 0.054 594 2007 7 6.365 0.014 0.051 554 2007 8 6.378 0.015 0.051 705 2007 9 6.382 0.013 0.045 700 2007 10 6.402 0.013 0.049 724 2007 11 6.440 0.014 0.052 601 2007 12 6.475 0.015 0.053 714 2008 1 6.515 0.013 0.049 700 2008 2 6.539 0.013 0.052 682 2008 3 6.557 0.013 0.054 663 2008 4 6.582 0.013 0.045 700 2008 5 6.616 0.015 0.058 688 2008 6 6.647 0.016 0.061 709 2008 7 6.665 0.015 0.056 735 2008 8 6.668 0.013 0.056 687 2008 9 6.686 0.016 0.055 644 2008 10 6.713 0.016 0.051 657 2008 11 6.766 0.016 0.054 699 2008 12 6.816 0.018 0.066 742 2009 1 6.842 0.016 0.061 645 2009 2 6.845 0.016 0.057 661 2009 3 6.850 0.017 0.059 726 2009 4 6.880 0.017 0.064 453 2009 5 6.908 0.026 0.067 674 2009 6 6.919 0.017 0.062 666 2009 7 6.940 0.019 0.073 733 2009 8 6.957 0.027 0.069 703 2009 9 6.965 0.020 0.071 583 2009 10 6.995 0.017 0.071 738 2009 11 7.014 0.016 0.067 722 2009 12 7.071 0.018 0.071 711 2010 1 7.088 0.018 0.074 669 2010 2 7.122 0.018 0.075 565 2010 3 7.146 0.018 0.078 728 2010 4 7.161 0.017 0.080 713 2010 5 7.198 0.018 0.078 622 2010 6 7.218 0.017 0.077 635 2010 7 7.234 0.016 0.067 655 2010 8 7.240 0.016 0.055 728 2010 9 7.259 0.018 0.063 698 2010 10 7.283 0.015 0.079 286 2010 11 7.338 0.016 0.073 699 2010 12 7.371 0.017 0.080 686 2011 1 7.416 0.016 0.083 696 2011 2 7.410 0.015 0.080 669 2011 3 7.446 0.014 0.073 742 2011 4 7.459 0.016 0.081 483 2011 5 7.505 0.015 0.072 539 2011 6 7.498 0.014 0.071 696 2011 7 7.549 0.014 0.079 702 2011 8 7.532 0.015 0.075 742 2011 9 7.541 0.015 0.085 714 2011 10 7.581 0.015 0.077 739 2011 11 7.633 0.014 0.085 681 2011 12 7.683 0.014 0.078 709 2012 1 7.696 0.014 0.087 741 2012 2 7.706 0.014 0.081 684 2012 3 7.715 0.014 0.082 712 2012 4 7.763 0.014 0.083 700 2012 5 7.775 0.016 0.095 545 2012 6 7.815 0.049 0.142 684 2012 7 7.808 0.048 0.157 505 2012 8 7.820 0.034 0.165 691 2012 9 7.825 0.021 0.115 686 2012 10 7.874 0.021 0.121 681 2012 11 7.923 0.040 0.189 709 2012 12 7.968 0.042 0.188 736 2013 1 8.010 0.032 0.159 720 2013 2 8.031 0.034 0.171 653 2013 3 8.061 0.036 0.171 740 2013 4 8.078 0.029 0.136 708 2013 5 8.105 0.032 0.154 695 2013 6 8.167 0.009 0.054 705 2013 7 8.182 0.008 0.049 719 2013 8 8.163 0.008 0.035 702 2013 9 8.225 0.015 0.047 702 2013 10 8.247 0.010 0.042 718 2013 11 8.250 0.009 0.036 702 2013 12 8.319 0.007 0.045 742 2014 1 8.310 0.008 0.037 473 2014 2 8.334 0.009 0.036 590 2014 3 8.364 0.008 0.040 653 2014 4 8.383 0.008 0.037 696 2014 5 8.426 0.009 0.039 723 2014 6 8.447 0.009 0.047 581 2014 7 nan nan nan 0 2014 8 nan nan nan 0 2014 9 8.506 0.009 0.040 287 2014 10 8.535 0.008 0.039 706 2014 11 8.594 0.008 0.039 705 2014 12 8.633 0.008 0.037 731 2015 1 8.657 0.008 0.034 734 2015 2 8.684 0.008 0.042 665 2015 3 8.683 0.007 0.031 729 2015 4 8.695 0.007 0.037 718 2015 5 8.744 0.008 0.049 739 2015 6 8.774 0.011 0.048 522 2015 7 8.787 0.009 0.042 642 2015 8 8.792 0.008 0.042 723 2015 9 8.803 0.008 0.043 712 2015 10 8.838 0.008 0.038 726 2015 11 8.885 0.007 0.038 620 2015 12 8.936 0.007 0.040 728 2016 1 8.974 0.007 0.033 731 2016 2 8.990 0.008 0.034 694 2016 3 9.006 0.007 0.036 708 2016 4 9.019 0.007 0.037 710 2016 5 9.065 0.008 0.044 731 2016 6 9.089 0.010 0.046 708 2016 7 9.128 0.009 0.047 726 2016 8 9.135 0.009 0.043 738 2016 9 9.141 0.009 0.044 717 2016 10 9.186 0.009 0.054 715 2016 11 9.241 0.008 0.039 708 2016 12 9.308 0.008 0.046 726 2017 1 9.327 0.009 0.041 681 2017 2 9.350 0.009 0.044 294 2017 3 9.388 0.007 0.039 701 2017 4 9.379 0.008 0.038 718 2017 5 9.411 0.012 0.059 712 2017 6 9.460 0.038 0.149 605 2017 7 9.492 0.055 0.165 655 2017 8 9.500 0.029 0.093 619 2017 9 9.514 0.015 0.074 641 2017 10 9.556 0.011 0.058 715 2017 11 9.590 0.010 0.047 722 2017 12 9.611 0.010 0.047 707 2018 1 9.600 0.014 0.078 710 2018 2 9.668 0.018 0.092 610 2018 3 9.704 0.012 0.054 727 2018 4 9.755 0.011 0.056 710 2018 5 9.775 0.011 0.051 736 2018 6 9.796 0.012 0.055 698 2018 7 9.833 0.011 0.054 725 2018 8 9.834 0.017 0.086 723 2018 9 9.831 0.024 0.108 716 2018 10 9.876 0.033 0.141 680 2018 11 9.906 0.030 0.140 697 2018 12 9.969 0.028 0.145 735 2019 1 10.000 0.027 0.146 730 2019 2 10.025 0.028 0.135 653 2019 3 10.061 0.023 0.105 736 2019 4 10.085 0.040 0.208 710 2019 5 10.085 0.055 0.270 732 2019 6 10.136 0.040 0.221 685 2019 7 10.171 0.048 0.235 724 2019 8 10.176 0.038 0.189 712 2019 9 10.222 0.058 0.251 597 2019 10 10.222 0.057 0.304 744 2019 11 10.277 0.065 0.292 719 2019 12 10.318 0.067 0.313 706 2020 1 10.326 0.057 0.274 708 2020 2 10.344 0.042 0.209 684 2020 3 10.363 0.051 0.253 731 2020 4 10.377 0.026 0.129 716 2020 5 10.416 0.032 0.138 741 2020 6 10.455 0.030 0.138 707 2020 7 10.492 0.057 0.220 706 2020 8 10.505 0.027 0.124 724 2020 9 10.529 0.016 0.076 705 2020 10 10.563 0.016 0.059 538 2020 11 10.612 0.011 0.047 498 2020 12 10.635 0.014 0.044 644 2021 1 10.657 0.009 0.042 513 2021 2 10.690 0.009 0.040 622 2021 3 10.727 0.009 0.037 742 2021 4 10.756 0.009 0.041 690 2021 5 10.795 0.010 0.048 627 2021 6 10.856 0.009 0.058 711 2021 7 10.888 0.007 0.040 647 2021 8 10.888 0.009 0.035 737 2021 9 10.906 0.008 0.038 704 2021 10 10.949 0.008 0.040 740 2021 11 10.987 0.009 0.039 711 2021 12 11.045 0.011 0.047 732 2022 1 11.092 0.013 0.049 716 2022 2 11.104 0.012 0.058 645 2022 3 11.141 0.014 0.059 697 2022 4 11.175 0.011 0.048 710 2022 5 11.220 0.009 0.045 714 2022 6 11.247 0.012 0.061 706 2022 7 11.308 0.014 0.062 397 2022 8 11.258 0.035 0.113 154 2022 9 11.276 0.028 0.104 711 2022 10 11.304 0.024 0.091 717 2022 11 11.371 0.031 0.097 676 2022 12 11.411 0.028 0.065 708 2023 1 11.441 0.034 0.074 622 2023 2 11.464 0.029 0.087 608 2023 3 11.524 0.029 0.083 697 2023 4 11.551 0.024 0.060 660 2023 5 11.597 0.015 0.058 727 2023 6 11.600 0.017 0.063 239 2023 7 11.663 0.027 0.108 517 2023 8 11.669 0.033 0.114 628