# file: smo_F11_MM.dat # date: 2023-08-29 # # Chlorofluorocarbon-11 (F11) 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 Chlorofluorocarbon-11 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: NOAA 2016 # 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 F11 in ppt, uncertainty (unc), std. dev. (sd), number of samples # F11catsSMOyr F11catsSMOmon F11catsSMOm F11catsSMOunc F11catsSMOsd F11catsSMOn 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 12 261.49 0.61 0.65 511 1999 1 261.61 0.58 0.61 519 1999 2 261.33 0.55 0.64 617 1999 3 260.62 0.52 0.57 666 1999 4 260.47 0.59 0.61 600 1999 5 260.32 0.56 0.79 553 1999 6 260.13 0.64 0.81 673 1999 7 259.74 0.75 0.71 652 1999 8 259.90 0.59 0.58 568 1999 9 259.51 0.54 0.60 672 1999 10 259.41 0.58 0.64 631 1999 11 259.58 0.51 0.54 647 1999 12 259.61 0.53 0.66 697 2000 1 259.80 0.52 0.53 724 2000 2 260.12 0.38 0.57 364 2000 3 259.14 0.47 1.10 472 2000 4 258.40 0.53 0.62 683 2000 5 257.91 0.51 0.61 565 2000 6 257.44 0.52 0.53 414 2000 7 257.62 0.55 0.58 677 2000 8 257.49 0.60 0.65 593 2000 9 257.34 0.54 0.63 691 2000 10 257.38 0.49 0.57 714 2000 11 257.23 0.57 0.59 628 2000 12 257.38 0.55 0.74 714 2001 1 257.40 0.81 0.66 522 2001 2 257.41 1.01 0.81 315 2001 3 257.01 0.95 0.97 654 2001 4 256.72 0.96 0.75 429 2001 5 255.82 1.15 0.92 606 2001 6 256.06 0.32 0.39 506 2001 7 257.21 0.28 0.53 492 2001 8 257.45 0.32 0.41 307 2001 9 256.73 0.33 0.42 382 2001 10 256.54 0.35 0.34 220 2001 11 256.87 0.32 0.55 356 2001 12 256.58 0.33 0.64 678 2002 1 256.90 0.59 0.50 560 2002 2 256.62 0.25 0.58 521 2002 3 256.52 0.30 0.48 677 2002 4 255.97 0.32 0.57 669 2002 5 255.48 0.34 0.53 366 2002 6 255.25 0.55 0.81 609 2002 7 255.09 0.62 0.69 587 2002 8 254.88 0.36 0.62 530 2002 9 254.53 0.39 0.59 631 2002 10 254.59 0.49 0.57 490 2002 11 254.01 0.55 0.57 378 2002 12 253.37 0.38 0.64 529 2003 1 253.80 0.42 0.56 428 2003 2 253.27 0.41 0.57 550 2003 3 253.86 0.50 0.55 489 2003 4 253.49 0.50 0.50 640 2003 5 253.15 0.78 0.53 175 2003 6 nan nan nan 0 2003 7 252.27 0.32 0.42 339 2003 8 252.33 0.39 0.45 663 2003 9 252.11 0.41 0.58 627 2003 10 251.75 0.42 0.54 636 2003 11 251.92 0.67 0.73 435 2003 12 252.55 0.61 0.82 493 2004 1 251.75 0.75 0.25 185 2004 2 252.17 0.61 0.34 627 2004 3 252.20 0.53 0.44 609 2004 4 251.64 0.48 0.52 668 2004 5 252.78 0.48 0.87 701 2004 6 251.57 0.50 0.48 665 2004 7 251.08 0.44 0.42 691 2004 8 251.03 0.50 0.56 672 2004 9 250.68 0.62 0.74 666 2004 10 250.74 0.62 0.80 686 2004 11 250.88 0.72 0.96 658 2004 12 250.54 0.63 0.91 687 2005 1 250.60 0.57 0.74 632 2005 2 249.99 0.48 0.66 527 2005 3 250.26 0.60 0.82 676 2005 4 249.79 0.63 0.74 589 2005 5 248.64 0.57 0.75 663 2005 6 248.94 0.39 0.43 357 2005 7 248.17 0.45 0.54 69 2005 8 248.64 0.39 0.34 145 2005 9 248.62 0.45 0.43 642 2005 10 248.62 0.41 0.48 678 2005 11 248.50 0.42 0.45 537 2005 12 248.41 0.42 0.48 674 2006 1 248.64 0.41 0.51 581 2006 2 248.91 0.40 0.51 598 2006 3 248.16 0.48 0.47 612 2006 4 248.09 0.47 0.51 296 2006 5 247.54 0.43 0.70 553 2006 6 247.34 0.41 0.42 614 2006 7 247.02 0.40 0.49 566 2006 8 246.75 0.49 0.46 639 2006 9 246.66 0.53 0.39 604 2006 10 246.20 0.56 0.52 580 2006 11 246.18 0.47 0.48 523 2006 12 246.23 0.43 0.48 686 2007 1 245.75 0.46 0.53 625 2007 2 246.41 0.49 0.45 556 2007 3 246.02 0.48 0.48 675 2007 4 245.61 0.46 0.53 659 2007 5 245.31 0.44 0.40 541 2007 6 244.81 0.43 0.50 653 2007 7 244.54 0.41 0.44 730 2007 8 244.35 0.44 0.47 692 2007 9 244.41 0.45 0.45 663 2007 10 244.39 0.43 0.49 618 2007 11 244.38 0.44 0.55 638 2007 12 244.13 0.41 0.50 650 2008 1 244.32 0.45 0.59 451 2008 2 243.94 0.45 0.51 610 2008 3 243.60 0.49 0.55 643 2008 4 243.36 0.44 0.53 641 2008 5 243.28 0.44 0.54 639 2008 6 242.89 0.45 0.54 618 2008 7 242.50 0.43 0.51 654 2008 8 242.35 0.45 0.39 663 2008 9 242.17 0.47 0.50 639 2008 10 242.35 0.52 0.46 653 2008 11 242.50 0.48 0.57 628 2008 12 242.59 0.46 0.59 690 2009 1 242.65 0.45 0.59 624 2009 2 242.17 0.46 0.60 608 2009 3 242.27 0.48 0.57 627 2009 4 241.80 0.52 0.61 601 2009 5 241.45 0.46 0.60 647 2009 6 240.97 0.50 0.77 490 2009 7 240.82 0.61 0.90 523 2009 8 240.77 0.64 0.79 598 2009 9 240.74 1.03 1.21 543 2009 10 240.05 1.11 1.14 407 2009 11 240.14 0.69 1.37 644 2009 12 240.02 0.75 0.91 662 2010 1 240.19 0.73 0.95 604 2010 2 239.59 0.68 0.86 516 2010 3 239.66 0.79 0.99 662 2010 4 239.50 0.82 1.26 194 2010 5 nan nan nan 0 2010 6 238.83 0.92 0.93 96 2010 7 238.57 1.28 1.10 507 2010 8 238.44 1.38 0.95 426 2010 9 238.07 0.83 1.17 684 2010 10 238.15 0.85 1.20 604 2010 11 238.12 0.75 1.17 527 2010 12 238.00 0.82 1.18 174 2011 1 237.91 0.85 0.92 533 2011 2 237.68 0.75 0.82 587 2011 3 237.50 0.87 0.95 696 2011 4 237.09 0.78 0.72 642 2011 5 237.01 0.88 0.80 642 2011 6 236.67 0.55 0.63 658 2011 7 236.45 0.66 0.63 649 2011 8 236.30 0.67 0.78 674 2011 9 236.71 0.78 0.87 651 2011 10 236.29 0.81 0.86 615 2011 11 236.16 0.67 0.84 667 2011 12 235.93 0.69 0.88 685 2012 1 235.83 0.68 1.00 694 2012 2 236.13 0.74 0.98 638 2012 3 235.80 0.86 1.16 496 2012 4 235.21 0.64 0.72 358 2012 5 235.05 0.56 0.60 65 2012 6 234.60 0.56 0.73 451 2012 7 234.30 0.52 0.58 653 2012 8 234.35 0.53 0.61 688 2012 9 234.06 0.64 0.98 617 2012 10 234.04 1.05 1.37 528 2012 11 234.07 0.74 0.86 628 2012 12 233.95 0.67 0.76 501 2013 1 234.06 0.67 0.96 710 2013 2 233.73 0.75 1.04 595 2013 3 233.78 0.68 0.89 125 2013 4 nan nan nan 0 2013 5 232.86 0.70 1.13 528 2013 6 232.38 0.75 1.16 630 2013 7 232.12 0.78 1.33 563 2013 8 232.91 0.78 1.27 656 2013 9 232.42 0.94 1.37 675 2013 10 231.93 1.01 1.47 701 2013 11 231.81 1.00 1.36 685 2013 12 231.77 1.02 1.47 680 2014 1 231.60 0.99 1.36 479 2014 2 231.27 0.88 1.28 47 2014 3 230.60 0.76 0.96 130 2014 4 230.26 0.74 1.09 345 2014 5 230.20 0.90 1.09 357 2014 6 230.39 0.85 1.20 382 2014 7 230.77 0.50 0.82 632 2014 8 230.75 0.42 0.67 627 2014 9 230.65 0.51 0.85 547 2014 10 230.44 0.73 1.14 655 2014 11 230.57 0.72 1.11 636 2014 12 230.00 0.81 1.14 611 2015 1 230.71 0.81 1.36 577 2015 2 230.66 0.73 1.17 569 2015 3 230.38 0.76 1.24 688 2015 4 230.06 0.60 1.03 684 2015 5 229.37 0.60 1.04 577 2015 6 229.65 0.48 0.99 138 2015 7 230.08 0.69 1.14 646 2015 8 229.95 0.69 0.98 670 2015 9 230.03 0.73 1.06 627 2015 10 229.63 0.63 0.98 632 2015 11 229.95 0.58 0.93 670 2015 12 229.80 0.57 0.94 603 2016 1 229.69 0.51 1.01 713 2016 2 229.67 0.57 1.12 680 2016 3 229.78 0.65 1.26 480 2016 4 229.49 0.65 1.55 630 2016 5 229.04 0.60 1.32 684 2016 6 228.74 0.56 1.28 666 2016 7 228.78 0.56 1.24 208 2016 8 nan nan nan 0 2016 9 228.97 0.54 1.10 629 2016 10 229.02 0.52 1.10 553 2016 11 228.74 0.45 1.04 634 2016 12 228.96 0.45 1.06 705 2017 1 229.07 0.50 1.11 665 2017 2 229.68 0.58 1.24 621 2017 3 228.25 0.65 1.26 661 2017 4 227.69 0.65 1.39 646 2017 5 227.56 0.62 1.25 714 2017 6 227.35 0.71 1.30 100 2017 7 nan nan nan 0 2017 8 227.88 0.66 1.32 637 2017 9 227.98 0.63 1.23 702 2017 10 228.10 0.68 1.27 712 2017 11 228.25 0.63 1.36 386 2017 12 nan nan nan 0 2018 1 nan nan nan 0 2018 2 228.02 0.75 1.57 327 2018 3 228.19 1.04 1.65 673 2018 4 227.98 1.14 1.57 694 2018 5 227.48 1.15 1.58 728 2018 6 227.36 1.14 1.55 687 2018 7 227.44 0.96 1.47 723 2018 8 227.41 0.97 1.31 630 2018 9 226.99 1.01 1.35 644 2018 10 227.29 1.07 1.19 457 2018 11 227.49 0.89 1.10 688 2018 12 227.61 1.00 1.03 484 2019 1 227.44 0.96 1.12 283 2019 2 227.18 0.82 0.90 303 2019 3 227.29 1.44 1.07 248 2019 4 226.68 0.89 1.16 260 2019 5 226.28 0.76 0.99 533 2019 6 226.04 0.80 1.03 646 2019 7 225.81 0.89 1.08 606 2019 8 225.80 0.91 1.02 538 2019 9 225.74 0.97 1.05 219 2019 10 225.34 0.75 0.90 367 2019 11 225.29 0.80 1.01 302 2019 12 225.35 0.73 1.22 432 2020 1 225.04 0.83 1.32 573 2020 2 224.97 0.69 1.02 476 2020 3 224.81 0.60 0.78 729 2020 4 224.46 0.68 0.98 482 2020 5 224.13 0.65 0.95 702 2020 6 223.53 0.72 0.90 670 2020 7 223.28 0.67 0.82 709 2020 8 223.32 0.67 0.81 726 2020 9 223.44 1.02 1.17 341 2020 10 223.02 1.64 1.72 377 2020 11 223.09 0.97 0.86 204 2020 12 222.93 0.66 0.69 611 2021 1 222.54 0.82 0.72 582 2021 2 222.61 0.99 1.03 593 2021 3 222.36 0.92 0.93 598 2021 4 221.93 0.79 0.79 637 2021 5 221.84 0.47 0.69 360 2021 6 221.37 0.39 0.67 659 2021 7 221.08 0.35 0.60 722 2021 8 220.97 0.35 0.61 734 2021 9 220.63 0.37 0.61 706 2021 10 220.34 0.36 0.60 734 2021 11 220.21 0.37 0.63 640 2021 12 220.10 0.33 0.60 710 2022 1 220.45 0.42 0.36 32 2022 2 nan nan nan 0 2022 3 nan nan nan 0 2022 4 219.34 0.31 0.36 543 2022 5 219.06 0.32 0.41 695 2022 6 218.94 0.25 0.34 576 2022 7 218.59 0.21 0.32 324 2022 8 nan nan nan 0 2022 9 218.33 0.26 0.38 198 2022 10 218.34 0.27 0.41 578 2022 11 218.30 0.36 0.44 117 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