# file: smo_SF6_MM.dat # date: 2023-08-29 # # Sulfur hexafluoride (SF6) data from hourly in situ samples analyzed on a gas chromatograph located # at Cape Matatulu (SMO), American Samoa (14.3 S, 170.6 W, elevation: 77 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 # SF6catsSMOyr SF6catsSMOmon SF6catsSMOm SF6catsSMOunc SF6catsSMOsd SF6catsSMOn 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 nan nan nan 0 1998 7 nan nan nan 0 1998 8 nan nan nan 0 1998 9 nan nan nan 0 1998 10 nan nan nan 0 1998 11 nan nan nan 0 1998 12 4.129 0.118 0.251 512 1999 1 4.175 0.130 0.216 599 1999 2 4.212 0.121 0.176 618 1999 3 4.251 0.133 0.152 641 1999 4 4.270 0.136 0.158 550 1999 5 4.294 0.185 0.211 496 1999 6 4.265 0.328 0.405 557 1999 7 4.303 0.267 0.393 549 1999 8 4.353 0.221 0.348 565 1999 9 4.326 0.168 0.337 632 1999 10 4.301 0.390 0.502 357 1999 11 4.424 0.235 0.398 621 1999 12 4.420 0.265 0.444 581 2000 1 4.453 0.301 0.478 600 2000 2 4.498 0.186 0.325 627 2000 3 4.471 0.390 0.387 463 2000 4 4.443 0.449 0.480 352 2000 5 4.426 0.574 0.496 229 2000 6 nan nan nan 0 2000 7 4.502 0.023 0.026 443 2000 8 4.524 0.021 0.028 627 2000 9 4.537 0.022 0.031 695 2000 10 4.564 0.021 0.031 719 2000 11 4.567 0.023 0.026 612 2000 12 4.601 0.023 0.040 717 2001 1 4.630 0.021 0.029 587 2001 2 4.648 0.021 0.038 566 2001 3 4.666 0.021 0.041 728 2001 4 4.660 0.022 0.037 537 2001 5 4.655 0.021 0.028 589 2001 6 4.678 0.026 0.036 703 2001 7 4.701 0.026 0.035 604 2001 8 4.704 0.022 0.035 693 2001 9 4.718 0.024 0.034 671 2001 10 4.727 0.022 0.028 715 2001 11 4.752 0.028 0.050 641 2001 12 4.802 0.025 0.046 702 2002 1 4.835 0.021 0.028 676 2002 2 4.855 0.012 0.028 615 2002 3 4.870 0.017 0.028 701 2002 4 4.864 0.018 0.026 700 2002 5 4.867 0.020 0.027 388 2002 6 4.881 0.022 0.025 632 2002 7 4.902 0.018 0.024 665 2002 8 4.923 0.016 0.033 611 2002 9 4.935 0.018 0.025 679 2002 10 4.954 0.019 0.027 613 2002 11 4.975 0.037 0.033 572 2002 12 4.982 0.024 0.031 605 2003 1 5.018 0.019 0.037 709 2003 2 5.004 0.020 0.037 655 2003 3 5.059 0.022 0.028 707 2003 4 5.055 0.022 0.035 663 2003 5 5.033 0.019 0.028 659 2003 6 5.038 0.021 0.025 599 2003 7 5.095 0.019 0.027 652 2003 8 5.119 0.020 0.026 699 2003 9 5.137 0.019 0.026 660 2003 10 5.148 0.018 0.029 648 2003 11 5.172 0.018 0.028 604 2003 12 5.230 0.016 0.029 705 2004 1 5.250 0.022 0.046 327 2004 2 5.278 0.019 0.032 642 2004 3 5.303 0.021 0.039 610 2004 4 5.311 0.020 0.048 678 2004 5 5.306 0.019 0.024 704 2004 6 5.319 0.019 0.025 664 2004 7 5.338 0.020 0.026 708 2004 8 5.375 0.021 0.029 674 2004 9 5.381 0.022 0.032 674 2004 10 5.400 0.024 0.034 688 2004 11 5.434 0.023 0.035 631 2004 12 5.443 0.020 0.035 691 2005 1 5.499 0.020 0.037 681 2005 2 5.480 0.019 0.036 560 2005 3 5.535 0.021 0.036 712 2005 4 5.529 0.021 0.037 690 2005 5 5.515 0.020 0.032 710 2005 6 5.545 0.020 0.027 370 2005 7 5.532 0.016 0.027 330 2005 8 5.565 0.013 0.034 431 2005 9 5.610 0.014 0.026 674 2005 10 5.634 0.013 0.027 726 2005 11 5.662 0.014 0.030 579 2005 12 5.678 0.013 0.034 706 2006 1 5.718 0.018 0.043 607 2006 2 5.773 0.020 0.031 627 2006 3 5.736 0.020 0.034 633 2006 4 5.744 0.021 0.034 710 2006 5 5.774 0.021 0.039 664 2006 6 5.773 0.019 0.030 672 2006 7 5.794 0.020 0.030 609 2006 8 5.810 0.020 0.032 705 2006 9 5.849 0.021 0.031 652 2006 10 5.868 0.022 0.033 603 2006 11 5.893 0.022 0.033 647 2006 12 5.925 0.021 0.039 701 2007 1 5.930 0.023 0.045 695 2007 2 6.028 0.022 0.035 563 2007 3 6.030 0.020 0.038 700 2007 4 6.028 0.022 0.032 680 2007 5 6.044 0.022 0.035 628 2007 6 6.048 0.023 0.035 654 2007 7 6.072 0.024 0.037 721 2007 8 6.088 0.026 0.036 690 2007 9 6.111 0.025 0.034 655 2007 10 6.145 0.024 0.033 634 2007 11 6.199 0.026 0.046 644 2007 12 6.201 0.025 0.049 682 2008 1 6.262 0.027 0.046 693 2008 2 6.262 0.028 0.047 638 2008 3 6.274 0.030 0.045 699 2008 4 6.284 0.030 0.045 685 2008 5 6.322 0.030 0.051 689 2008 6 6.330 0.029 0.050 667 2008 7 6.332 0.029 0.050 707 2008 8 6.363 0.029 0.053 705 2008 9 6.401 0.031 0.051 678 2008 10 6.429 0.027 0.037 675 2008 11 6.476 0.026 0.042 636 2008 12 6.535 0.028 0.057 710 2009 1 6.579 0.026 0.051 645 2009 2 6.575 0.027 0.046 622 2009 3 6.614 0.023 0.054 641 2009 4 6.602 0.024 0.052 616 2009 5 6.613 0.023 0.041 668 2009 6 6.612 0.024 0.049 519 2009 7 6.649 0.022 0.033 536 2009 8 6.672 0.022 0.035 309 2009 9 6.693 0.023 0.035 525 2009 10 6.689 0.025 0.035 504 2009 11 6.724 0.027 0.045 687 2009 12 6.744 0.032 0.059 683 2010 1 6.795 0.032 0.060 654 2010 2 6.789 0.031 0.068 549 2010 3 6.817 0.030 0.048 676 2010 4 6.847 0.031 0.048 228 2010 5 nan nan nan 0 2010 6 6.910 0.034 0.042 100 2010 7 6.917 0.027 0.038 562 2010 8 6.948 0.031 0.045 589 2010 9 6.968 0.035 0.049 224 2010 10 nan nan nan 0 2010 11 nan nan nan 0 2010 12 nan nan nan 0 2011 1 nan nan nan 0 2011 2 7.092 0.058 0.066 97 2011 3 7.123 0.062 0.088 728 2011 4 7.142 0.054 0.073 659 2011 5 7.158 0.050 0.080 687 2011 6 7.206 0.052 0.069 707 2011 7 7.234 0.058 0.071 618 2011 8 7.266 0.062 0.081 724 2011 9 7.280 0.042 0.079 693 2011 10 7.286 0.039 0.082 666 2011 11 7.317 0.037 0.093 708 2011 12 7.337 0.036 0.101 741 2012 1 7.394 0.036 0.106 716 2012 2 7.444 0.035 0.092 680 2012 3 7.435 0.049 0.109 586 2012 4 7.453 0.061 0.119 709 2012 5 7.426 0.071 0.113 67 2012 6 7.476 0.056 0.117 500 2012 7 7.477 0.048 0.105 685 2012 8 7.519 0.058 0.117 733 2012 9 7.542 0.057 0.115 631 2012 10 7.565 0.054 0.110 651 2012 11 7.590 0.053 0.100 679 2012 12 7.645 0.047 0.113 520 2013 1 7.687 0.053 0.127 727 2013 2 7.728 0.058 0.127 604 2013 3 7.733 0.051 0.107 716 2013 4 7.734 0.056 0.103 672 2013 5 7.747 0.065 0.123 730 2013 6 7.766 0.060 0.125 649 2013 7 7.779 0.067 0.120 672 2013 8 7.833 0.058 0.102 706 2013 9 7.856 0.056 0.100 688 2013 10 7.874 0.058 0.100 721 2013 11 7.907 0.057 0.115 698 2013 12 7.951 0.062 0.117 721 2014 1 8.011 0.056 0.121 724 2014 2 8.034 0.058 0.128 638 2014 3 8.061 0.069 0.131 450 2014 4 8.024 0.058 0.129 692 2014 5 8.030 0.060 0.133 596 2014 6 8.111 0.075 0.140 370 2014 7 8.142 0.074 0.132 635 2014 8 8.173 0.076 0.144 621 2014 9 8.207 0.059 0.125 540 2014 10 8.254 0.053 0.107 667 2014 11 8.296 0.056 0.111 663 2014 12 8.297 0.057 0.105 631 2015 1 8.399 0.054 0.107 626 2015 2 8.430 0.142 0.097 250 2015 3 8.450 0.126 0.095 347 2015 4 8.439 0.079 0.106 308 2015 5 8.425 0.061 0.098 550 2015 6 8.402 0.051 0.093 124 2015 7 8.431 0.059 0.085 663 2015 8 8.466 0.057 0.083 705 2015 9 8.501 0.054 0.087 661 2015 10 8.519 0.055 0.089 657 2015 11 8.561 0.053 0.093 669 2015 12 8.615 0.061 0.107 519 2016 1 8.617 0.064 0.110 719 2016 2 8.654 0.063 0.111 666 2016 3 8.724 0.074 0.120 479 2016 4 8.734 0.082 0.154 463 2016 5 8.722 0.128 0.223 625 2016 6 8.701 0.157 0.248 658 2016 7 8.744 0.168 0.254 272 2016 8 nan nan nan 0 2016 9 8.844 0.036 0.069 556 2016 10 8.884 0.042 0.078 547 2016 11 8.904 0.045 0.086 625 2016 12 8.954 0.036 0.080 708 2017 1 8.993 0.043 0.090 663 2017 2 9.077 0.051 0.097 623 2017 3 9.041 0.059 0.117 654 2017 4 9.054 0.047 0.110 632 2017 5 9.078 0.042 0.085 718 2017 6 9.036 0.064 0.072 106 2017 7 9.117 0.043 0.078 71 2017 8 9.142 0.052 0.086 628 2017 9 9.191 0.049 0.086 582 2017 10 nan nan nan 0 2017 11 9.277 0.089 0.116 251 2017 12 nan nan nan 0 2018 1 nan nan nan 0 2018 2 9.390 0.041 0.061 89 2018 3 9.417 0.045 0.092 702 2018 4 9.395 0.118 0.202 663 2018 5 9.474 0.179 0.322 711 2018 6 9.413 0.157 0.280 662 2018 7 9.464 0.122 0.229 696 2018 8 9.502 0.054 0.102 619 2018 9 9.514 0.074 0.139 618 2018 10 9.573 0.050 0.077 503 2018 11 9.612 0.034 0.075 674 2018 12 9.662 0.034 0.080 702 2019 1 9.747 0.036 0.082 497 2019 2 9.760 0.043 0.088 578 2019 3 9.763 0.036 0.068 670 2019 4 9.775 0.051 0.101 607 2019 5 9.789 0.062 0.117 694 2019 6 9.792 0.072 0.129 695 2019 7 9.797 0.090 0.163 626 2019 8 9.866 0.068 0.115 579 2019 9 9.876 0.062 0.109 434 2019 10 9.898 0.063 0.117 730 2019 11 9.959 0.091 0.146 606 2019 12 9.992 0.061 0.105 477 2020 1 10.049 0.073 0.138 575 2020 2 10.089 0.051 0.112 569 2020 3 10.105 0.062 0.125 720 2020 4 10.103 0.059 0.115 500 2020 5 10.115 0.072 0.121 664 2020 6 10.104 0.073 0.121 660 2020 7 10.173 0.054 0.098 713 2020 8 10.239 0.066 0.115 726 2020 9 10.272 0.079 0.138 707 2020 10 10.262 0.089 0.113 501 2020 11 10.322 0.104 0.135 617 2020 12 10.340 0.098 0.124 707 2021 1 10.392 0.112 0.130 656 2021 2 10.432 0.096 0.132 586 2021 3 10.442 0.100 0.127 734 2021 4 10.424 0.105 0.139 423 2021 5 10.455 0.086 0.113 732 2021 6 10.473 0.069 0.086 712 2021 7 10.503 0.083 0.120 725 2021 8 10.536 0.101 0.136 733 2021 9 10.588 0.107 0.138 706 2021 10 10.584 0.105 0.133 720 2021 11 10.652 0.093 0.138 631 2021 12 10.703 0.050 0.080 707 2022 1 10.754 0.053 0.069 41 2022 2 nan nan nan 0 2022 3 nan nan nan 0 2022 4 10.817 0.066 0.096 522 2022 5 10.830 0.063 0.096 675 2022 6 10.859 0.054 0.086 711 2022 7 10.867 0.047 0.081 538 2022 8 nan nan nan 0 2022 9 10.964 0.056 0.155 154 2022 10 11.007 0.117 0.222 740 2022 11 11.049 0.154 0.257 117 2022 12 nan nan nan 0 2023 1 nan nan nan 0 2023 2 nan nan nan 0 2023 3 nan nan nan 0 2023 4 nan nan nan 0 2023 5 nan nan nan 0 2023 6 nan nan nan 0 2023 7 nan nan nan 0 2023 8 nan nan nan 0