# file: smo_F12_MM.dat # date: Mon, Jun 28, 2021 3:49:44 PM # # Chloroflurocarbon-12 (F12) 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/ESRL 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. # # (PIs) Geoffrey S. Dutton, Dr. James W. Elkins, Dr. Bradley D. Hall # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GML # Boulder, CO 80305-3328 # # Email: Geoff.Dutton@noaa.gov; James.W.Elkins@noaa.gov; Bradley.Hall@noaa.gov # Phone: (303) 497-6086 (303) 497-6224 (303) 497-7011 # Fax: (303) 497-6290 # # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # Data use policy: # If you use this data in a publication or report, we would appreciate that you contact the principal # investigators (PIs) first and discuss your interests. We are trying to encourage scientific discussion. # The PIs can discuss the quality of the data and any potential problems with its analysis. Recent data (less # than 1.5 years) are considered preliminary. Please contact the PIs for more information. # # The data should be cited in presentations or publications as the flowing: Chloroflurocarbon-12 data from # the NOAA/ESRL halocarbons in situ program. # # DOI: http://doi.org/10.7289/V5X0659V # # Calibration scale used: NOAA 2008 # # More information about the calibration scale can be found at: # http://www.esrl.noaa.gov/gmd/ccl/ # # 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 F12 in ppt, uncertainty (unc), std. dev. (sd), number of samples # F12catsSMOyr F12catsSMOmon F12catsSMOm F12catsSMOunc F12catsSMOsd F12catsSMOn 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 12 536.85 0.82 1.39 507 1999 1 537.77 0.74 1.16 530 1999 2 538.00 0.67 1.26 626 1999 3 536.84 0.62 1.14 658 1999 4 537.05 0.68 1.17 586 1999 5 536.99 0.67 1.32 529 1999 6 537.14 0.69 1.16 646 1999 7 536.80 0.69 1.10 637 1999 8 537.28 0.69 1.13 541 1999 9 536.82 0.65 1.23 652 1999 10 536.89 0.70 1.23 595 1999 11 537.82 0.67 1.20 626 1999 12 538.42 0.68 1.35 645 2000 1 539.05 0.67 1.09 689 2000 2 538.95 0.54 1.07 672 2000 3 539.31 0.56 1.15 719 2000 4 538.93 0.70 1.28 655 2000 5 538.26 0.73 1.36 531 2000 6 538.09 0.64 1.15 396 2000 7 538.72 0.67 1.21 641 2000 8 539.14 0.75 1.20 577 2000 9 539.34 0.68 1.21 676 2000 10 539.74 0.67 1.26 704 2000 11 539.68 0.69 1.20 612 2000 12 540.31 0.72 1.42 689 2001 1 540.92 1.08 1.35 571 2001 2 541.23 1.38 1.83 301 2001 3 540.61 1.27 1.69 637 2001 4 540.33 1.18 1.33 426 2001 5 539.21 1.33 1.41 527 2001 6 539.70 0.89 1.11 465 2001 7 540.87 0.73 1.17 463 2001 8 541.24 1.12 1.14 246 2001 9 540.91 0.86 1.13 374 2001 10 540.37 0.87 1.08 221 2001 11 541.72 0.67 1.28 352 2001 12 541.34 0.93 1.57 658 2002 1 542.07 0.83 1.35 682 2002 2 542.16 0.54 1.15 603 2002 3 541.90 0.72 1.05 687 2002 4 541.21 0.71 1.14 663 2002 5 540.66 0.85 1.14 370 2002 6 540.60 0.80 1.11 611 2002 7 540.81 0.83 1.05 644 2002 8 540.48 0.99 1.55 638 2002 9 540.49 0.88 1.16 636 2002 10 540.79 0.98 1.32 676 2002 11 540.98 0.87 1.16 634 2002 12 540.96 0.89 1.23 600 2003 1 542.12 0.85 1.09 386 2003 2 540.91 0.84 1.54 192 2003 3 542.11 0.86 1.04 437 2003 4 541.04 0.91 1.19 628 2003 5 540.66 0.82 1.17 137 2003 6 nan nan nan 0 2003 7 541.02 0.86 0.99 576 2003 8 541.17 0.96 1.09 655 2003 9 540.94 0.99 1.24 598 2003 10 540.95 0.89 1.07 601 2003 11 541.48 0.89 1.20 439 2003 12 542.54 0.85 1.20 481 2004 1 541.83 1.47 1.38 341 2004 2 542.06 1.37 1.32 609 2004 3 542.25 1.35 1.47 589 2004 4 541.39 1.28 1.58 627 2004 5 541.23 1.27 1.12 626 2004 6 540.57 1.24 1.18 568 2004 7 540.77 1.04 1.11 660 2004 8 540.89 1.41 1.35 617 2004 9 540.81 1.44 1.45 633 2004 10 540.84 1.55 1.45 618 2004 11 541.36 1.85 1.66 579 2004 12 541.31 1.63 1.53 653 2005 1 541.86 1.42 1.32 638 2005 2 540.95 1.42 1.34 520 2005 3 541.67 1.61 1.39 692 2005 4 540.94 1.48 1.42 663 2005 5 539.96 1.26 1.28 695 2005 6 540.51 1.22 1.24 359 2005 7 539.23 1.47 1.31 56 2005 8 540.53 1.29 1.18 130 2005 9 540.46 1.41 1.22 645 2005 10 540.43 1.36 1.18 687 2005 11 540.54 1.43 1.33 550 2005 12 540.36 1.68 1.42 660 2006 1 540.63 1.92 1.57 493 2006 2 540.86 1.69 1.46 518 2006 3 539.74 1.66 1.37 619 2006 4 538.99 1.63 1.42 538 2006 5 539.08 2.12 1.79 525 2006 6 538.72 1.83 1.35 602 2006 7 538.32 1.51 1.25 537 2006 8 538.05 1.55 1.29 641 2006 9 538.95 1.41 1.41 469 2006 10 538.64 1.38 1.25 538 2006 11 538.63 1.09 1.24 481 2006 12 538.75 1.13 1.05 630 2007 1 538.03 1.22 0.96 586 2007 2 539.41 1.26 1.39 498 2007 3 539.48 1.20 1.53 641 2007 4 538.58 1.21 1.31 630 2007 5 537.27 1.16 1.06 512 2007 6 537.51 1.15 1.34 595 2007 7 536.72 1.11 0.92 667 2007 8 536.61 1.16 0.95 646 2007 9 537.07 1.17 0.94 633 2007 10 536.93 1.25 0.96 593 2007 11 537.03 1.19 1.04 599 2007 12 536.81 1.15 1.02 614 2008 1 537.27 1.32 1.36 462 2008 2 536.56 1.24 1.23 594 2008 3 536.35 1.33 1.27 626 2008 4 535.92 1.34 1.22 633 2008 5 535.92 1.29 1.24 630 2008 6 535.22 1.31 1.26 613 2008 7 534.71 1.23 1.21 650 2008 8 534.68 1.27 1.11 623 2008 9 535.12 1.35 1.31 610 2008 10 535.31 1.42 1.09 604 2008 11 535.43 1.36 1.22 600 2008 12 535.46 1.28 1.25 665 2009 1 535.52 1.41 1.28 595 2009 2 535.05 1.41 1.32 577 2009 3 534.93 1.41 1.32 578 2009 4 534.39 1.48 1.34 569 2009 5 533.96 1.40 1.30 625 2009 6 533.41 1.72 1.67 491 2009 7 533.04 1.91 1.93 529 2009 8 532.59 2.03 1.67 613 2009 9 532.80 2.75 2.55 552 2009 10 531.82 3.39 2.36 446 2009 11 532.17 2.28 2.96 673 2009 12 531.92 2.41 1.85 678 2010 1 532.22 2.35 1.92 618 2010 2 531.44 2.06 1.68 537 2010 3 531.43 2.18 2.14 668 2010 4 531.67 2.43 2.60 194 2010 5 nan nan nan 0 2010 6 530.77 2.45 2.20 98 2010 7 529.58 2.35 2.61 533 2010 8 529.06 2.03 2.99 569 2010 9 529.23 2.51 2.94 665 2010 10 529.28 2.57 3.03 610 2010 11 529.16 2.30 2.56 534 2010 12 529.17 2.43 2.34 177 2011 1 529.12 2.44 1.85 533 2011 2 528.45 2.12 1.73 596 2011 3 528.10 2.82 2.54 704 2011 4 527.54 2.16 1.63 644 2011 5 527.57 2.26 1.74 624 2011 6 527.71 1.63 1.31 679 2011 7 527.28 2.01 1.50 641 2011 8 527.14 2.14 2.19 690 2011 9 527.85 2.04 2.71 648 2011 10 526.88 1.86 2.40 618 2011 11 525.51 1.41 1.94 678 2011 12 525.46 1.80 2.89 691 2012 1 526.11 1.56 2.50 681 2012 2 526.07 1.85 2.88 621 2012 3 527.50 2.57 3.52 502 2012 4 525.73 1.32 2.19 358 2012 5 525.15 0.98 1.70 67 2012 6 524.54 1.26 1.73 495 2012 7 524.23 1.11 1.51 689 2012 8 524.42 1.22 1.45 723 2012 9 523.58 1.68 1.63 448 2012 10 522.74 3.14 1.84 347 2012 11 522.72 1.55 1.80 654 2012 12 521.79 1.45 1.62 520 2013 1 522.30 1.42 1.59 719 2013 2 522.77 1.57 1.84 610 2013 3 520.91 1.39 2.09 127 2013 4 nan nan nan 0 2013 5 520.55 1.44 1.73 387 2013 6 520.62 1.69 2.02 646 2013 7 520.27 1.90 1.97 582 2013 8 519.68 1.61 1.92 681 2013 9 518.93 2.07 2.09 685 2013 10 518.27 2.32 2.22 704 2013 11 517.85 2.06 2.03 683 2013 12 517.54 2.52 2.33 625 2014 1 517.08 2.10 1.89 345 2014 2 516.29 1.57 1.95 35 2014 3 517.11 1.85 1.83 140 2014 4 516.85 2.29 2.12 340 2014 5 516.85 2.85 2.14 356 2014 6 516.88 2.82 2.27 272 2014 7 516.07 1.30 1.23 288 2014 8 516.28 1.18 1.15 309 2014 9 516.10 1.19 1.12 274 2014 10 515.62 1.24 1.17 666 2014 11 515.29 1.31 1.18 662 2014 12 514.61 1.30 1.16 617 2015 1 515.21 1.20 1.20 587 2015 2 515.27 1.19 1.18 580 2015 3 515.08 1.24 1.01 684 2015 4 514.53 1.07 0.96 682 2015 5 514.09 1.01 1.05 521 2015 6 513.79 0.85 0.97 130 2015 7 514.00 0.97 1.04 653 2015 8 514.04 1.01 0.86 716 2015 9 513.64 1.02 0.95 642 2015 10 512.81 0.94 1.02 658 2015 11 512.78 0.93 1.02 678 2015 12 512.87 0.92 0.99 620 2016 1 512.86 0.86 0.95 713 2016 2 512.65 0.86 1.03 680 2016 3 512.61 0.95 1.06 500 2016 4 512.19 1.01 1.18 640 2016 5 511.99 0.84 1.01 689 2016 6 511.36 0.84 1.01 673 2016 7 511.28 0.87 1.19 289 2016 8 nan nan nan 0 2016 9 510.79 0.94 1.11 626 2016 10 510.60 0.96 1.13 549 2016 11 510.39 0.98 1.25 634 2016 12 510.27 1.05 1.44 699 2017 1 510.27 1.08 1.48 651 2017 2 508.31 1.40 1.76 626 2017 3 508.47 1.41 1.92 672 2017 4 508.46 1.47 1.97 646 2017 5 508.23 1.45 1.99 715 2017 6 507.83 1.61 1.73 107 2017 7 nan nan nan 0 2017 8 507.20 1.27 1.59 640 2017 9 507.20 1.20 1.44 702 2017 10 507.02 1.30 1.44 711 2017 11 506.96 1.18 1.40 384 2017 12 nan nan nan 0 2018 1 nan nan nan 0 2018 2 505.80 1.65 1.86 280 2018 3 506.27 2.07 2.46 685 2018 4 505.79 1.76 1.73 696 2018 5 505.08 1.86 1.84 732 2018 6 505.03 1.77 1.72 695 2018 7 504.62 1.60 1.74 714 2018 8 504.26 1.57 1.48 631 2018 9 504.11 1.66 1.48 651 2018 10 503.70 1.70 1.46 466 2018 11 503.19 1.60 1.50 690 2018 12 503.12 2.06 1.40 479 2019 1 503.48 2.26 1.49 247 2019 2 501.89 1.61 1.18 307 2019 3 501.73 3.05 0.95 246 2019 4 501.15 1.49 0.85 444 2019 5 500.72 1.42 0.96 529 2019 6 500.43 1.43 0.91 652 2019 7 500.15 1.57 0.96 606 2019 8 500.26 1.55 1.04 593 2019 9 500.01 1.83 1.02 341 2019 10 499.67 1.49 0.90 727 2019 11 499.50 1.58 1.00 598 2019 12 499.44 1.61 1.14 489 2020 1 499.10 1.59 1.16 564 2020 2 498.85 1.38 0.98 513 2020 3 498.74 1.19 0.76 726 2020 4 498.43 1.36 0.97 492 2020 5 498.28 1.39 0.93 702 2020 6 497.83 1.80 1.08 662 2020 7 497.52 1.96 1.33 701 2020 8 497.52 2.62 1.52 689 2020 9 497.12 2.73 1.75 634 2020 10 495.47 2.97 2.48 498 2020 11 493.86 1.80 1.42 293 2020 12 493.76 1.02 1.47 636 2021 1 494.40 1.62 0.91 471 2021 2 494.46 2.44 2.02 472 2021 3 493.35 2.04 1.89 330 2021 4 493.77 1.28 1.22 591 2021 5 491.78 1.15 1.40 284 2021 6 492.14 1.18 1.70 329