# file: smo_HCFC142b_MM.dat # date: Wed, Sep 26, 2018 3:00:23 PM # # Hydrochlorofluorocarbon-142b (HCFC142b) 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/GMD1 # 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: Hydrochlorofluorocarbon-142b data from # the NOAA/ESRL halocarbons in situ program. # # DOI: http://doi.org/10.7289/V5X0659V # # Calibration scale used: NOAA 1994 # # 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. # # year, month, monthly median of HCFC142b in ppt, std. dev., number of samples # HCFC142bcatsSMOyr HCFC142bcatsSMOmon HCFC142bcatsSMOm HCFC142bcatsSMOsd HCFC142bcatsSMOn 1998 1 nan nan 0 1998 2 nan nan 0 1998 3 nan nan 0 1998 4 nan nan 0 1998 5 nan nan 0 1998 6 nan nan 0 1998 7 nan nan 0 1998 8 nan nan 0 1998 9 nan nan 0 1998 10 nan nan 0 1998 11 nan nan 0 1998 12 nan nan 0 1999 1 9.37 0.46 89 1999 2 9.75 0.50 559 1999 3 9.56 0.52 690 1999 4 9.63 0.53 497 1999 5 10.26 1.51 83 1999 6 10.15 1.94 637 1999 7 10.06 2.00 620 1999 8 10.19 1.27 561 1999 9 10.20 1.16 120 1999 10 nan nan 0 1999 11 nan nan 0 1999 12 nan nan 0 2000 1 nan nan 0 2000 2 11.22 1.50 125 2000 3 11.09 1.53 356 2000 4 10.71 2.20 571 2000 5 10.77 1.58 590 2000 6 11.13 1.78 387 2000 7 11.15 1.68 309 2000 8 11.37 1.87 482 2000 9 11.39 1.34 632 2000 10 11.36 1.71 539 2000 11 11.16 0.72 670 2000 12 11.42 0.60 626 2001 1 11.68 0.66 487 2001 2 11.67 0.35 324 2001 3 nan nan 0 2001 4 11.90 0.65 47 2001 5 11.64 0.55 579 2001 6 11.72 0.37 671 2001 7 11.86 0.31 399 2001 8 nan nan 0 2001 9 nan nan 0 2001 10 nan nan 0 2001 11 12.40 0.56 350 2001 12 12.47 0.43 704 2002 1 12.59 0.45 714 2002 2 12.82 0.27 407 2002 3 12.74 0.42 732 2002 4 12.59 0.50 710 2002 5 12.66 0.51 396 2002 6 12.70 0.46 640 2002 7 12.77 0.51 701 2002 8 12.88 0.48 671 2002 9 12.94 0.32 669 2002 10 13.00 0.36 717 2002 11 13.03 0.34 688 2002 12 13.06 0.38 715 2003 1 13.22 0.39 683 2003 2 13.16 0.37 658 2003 3 13.38 0.43 649 2003 4 13.27 0.37 667 2003 5 13.18 0.34 674 2003 6 13.19 0.35 603 2003 7 13.40 0.35 626 2003 8 13.47 0.46 639 2003 9 13.51 0.40 549 2003 10 13.63 0.29 313 2003 11 13.63 0.27 369 2003 12 13.74 0.28 643 2004 1 14.05 0.33 74 2004 2 nan nan 0 2004 3 13.92 0.39 487 2004 4 13.88 0.34 625 2004 5 13.94 0.35 587 2004 6 13.90 0.29 651 2004 7 14.03 0.23 632 2004 8 14.15 0.25 585 2004 9 14.15 0.28 664 2004 10 14.24 0.28 681 2004 11 14.32 0.34 661 2004 12 14.27 0.37 679 2005 1 14.54 0.35 669 2005 2 14.35 0.31 555 2005 3 14.58 0.31 690 2005 4 14.48 0.33 682 2005 5 14.39 0.32 695 2005 6 14.54 0.30 62 2005 7 nan nan 0 2005 8 14.82 0.41 52 2005 9 14.84 0.40 312 2005 10 14.93 0.37 212 2005 11 15.03 0.33 196 2005 12 15.13 0.33 325 2006 1 15.30 0.25 302 2006 2 15.43 0.25 379 2006 3 15.23 0.30 611 2006 4 15.42 0.33 69 2006 5 15.26 0.26 524 2006 6 15.08 0.36 631 2006 7 15.31 0.30 580 2006 8 15.40 0.29 563 2006 9 15.61 0.31 614 2006 10 15.65 0.37 588 2006 11 15.75 0.25 535 2006 12 15.90 0.25 671 2007 1 15.98 0.25 600 2007 2 16.37 0.28 499 2007 3 16.47 0.30 638 2007 4 16.33 0.30 657 2007 5 16.12 0.43 361 2007 6 16.92 0.51 138 2007 7 16.65 0.27 419 2007 8 16.60 0.31 466 2007 9 16.82 0.24 494 2007 10 16.95 0.31 453 2007 11 nan nan 0 2007 12 nan nan 0 2008 1 17.39 0.39 323 2008 2 17.25 0.30 629 2008 3 17.29 0.32 681 2008 4 17.27 0.31 691 2008 5 17.39 0.31 672 2008 6 17.44 0.27 666 2008 7 17.47 0.27 704 2008 8 17.64 0.32 523 2008 9 17.83 0.28 658 2008 10 17.87 0.29 611 2008 11 18.04 0.34 587 2008 12 18.35 0.28 697 2009 1 18.51 0.26 608 2009 2 18.54 0.28 630 2009 3 18.90 0.30 584 2009 4 18.82 0.29 596 2009 5 18.80 0.25 646 2009 6 18.76 0.33 491 2009 7 17.87 0.39 548 2009 8 17.63 0.41 74 2009 9 nan nan 0 2009 10 19.01 0.40 469 2009 11 19.04 0.42 695 2009 12 18.93 0.38 705 2010 1 19.05 0.44 657 2010 2 19.01 0.37 542 2010 3 19.25 0.39 675 2010 4 nan nan 0 2010 5 nan nan 0 2010 6 19.01 0.35 59 2010 7 19.42 0.39 494 2010 8 18.81 0.40 624 2010 9 19.10 0.48 657 2010 10 19.64 0.54 562 2010 11 19.81 0.51 498 2010 12 19.94 0.63 175 2011 1 nan nan 0 2011 2 nan nan 0 2011 3 nan nan 0 2011 4 nan nan 0 2011 5 nan nan 0 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 nan nan 0 2011 10 20.73 1.12 241 2011 11 20.86 1.02 658 2011 12 20.72 0.82 726 2012 1 21.09 0.91 533 2012 2 21.14 1.23 573 2012 3 nan nan 0 2012 4 nan nan 0 2012 5 nan nan 0 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 nan nan 0 2012 10 nan nan 0 2012 11 nan nan 0 2012 12 nan nan 0 2013 1 nan nan 0 2013 2 nan nan 0 2013 3 nan nan 0 2013 4 nan nan 0 2013 5 nan nan 0 2013 6 nan nan 0 2013 7 nan nan 0 2013 8 22.67 0.74 220 2013 9 22.99 0.76 344 2013 10 23.04 0.72 362 2013 11 22.98 0.64 348 2013 12 23.05 0.65 344 2014 1 21.09 0.44 343 2014 2 20.71 0.43 35 2014 3 20.83 0.44 129 2014 4 20.93 0.36 345 2014 5 20.99 0.33 340 2014 6 20.37 0.38 293 2014 7 21.30 0.46 302 2014 8 20.55 0.67 136 2014 9 20.12 1.38 81 2014 10 nan nan 0 2014 11 nan nan 0 2014 12 nan nan 0 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 nan nan 0 2015 4 nan nan 0 2015 5 nan nan 0 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 nan nan 0 2015 9 nan nan 0 2015 10 nan nan 0 2015 11 nan nan 0 2015 12 nan nan 0 2016 1 nan nan 0 2016 2 nan nan 0 2016 3 nan nan 0 2016 4 nan nan 0 2016 5 nan nan 0 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 nan nan 0 2016 9 nan nan 0 2016 10 nan nan 0 2016 11 nan nan 0 2016 12 nan nan 0 2017 1 nan nan 0 2017 2 nan nan 0 2017 3 nan nan 0 2017 4 nan nan 0 2017 5 nan nan 0 2017 6 nan nan 0 2017 7 nan nan 0 2017 8 nan nan 0 2017 9 nan nan 0 2017 10 nan nan 0 2017 11 nan nan 0 2017 12 nan nan 0 2018 1 nan nan 0 2018 2 nan nan 0 2018 3 nan nan 0 2018 4 nan nan 0 2018 5 nan nan 0 2018 6 nan nan 0 2018 7 nan nan 0 2018 8 nan nan 0 2018 9 nan nan 0