# file: smo_HCFC22_MM.dat # date: Wed, Sep 26, 2018 2:57:23 PM # # Hydrochlorofluorocarbon-22 (HCFC22) 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-22 data from # the NOAA/ESRL halocarbons in situ program. # # DOI: http://doi.org/10.7289/V5X0659V # # Calibration scale used: NOAA 2006 # # 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 HCFC22 in ppt, std. dev., number of samples # HCFC22catsSMOyr HCFC22catsSMOmon HCFC22catsSMOm HCFC22catsSMOsd HCFC22catsSMOn 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 nan nan 0 1999 2 126.70 2.68 293 1999 3 122.86 2.63 661 1999 4 122.73 2.19 479 1999 5 121.50 2.18 81 1999 6 131.13 2.77 641 1999 7 132.02 2.89 575 1999 8 132.92 3.95 491 1999 9 134.04 8.14 460 1999 10 136.40 14.95 410 1999 11 137.68 25.29 297 1999 12 137.34 15.65 372 2000 1 137.75 16.87 464 2000 2 136.31 6.12 521 2000 3 137.56 4.52 516 2000 4 136.15 4.10 518 2000 5 135.76 3.62 463 2000 6 135.65 3.41 215 2000 7 136.35 3.27 561 2000 8 137.45 2.57 497 2000 9 137.69 1.59 661 2000 10 138.62 1.99 561 2000 11 137.98 1.72 569 2000 12 139.48 1.98 607 2001 1 140.14 2.44 504 2001 2 140.33 2.33 295 2001 3 nan nan 0 2001 4 139.66 1.51 73 2001 5 139.50 0.87 455 2001 6 140.31 0.72 435 2001 7 141.76 1.05 260 2001 8 nan nan 0 2001 9 nan nan 0 2001 10 nan nan 0 2001 11 144.88 0.81 331 2001 12 144.23 1.74 604 2002 1 145.86 1.29 634 2002 2 147.53 0.69 318 2002 3 146.27 1.22 650 2002 4 145.09 1.40 652 2002 5 144.86 1.73 383 2002 6 145.32 1.68 617 2002 7 146.38 1.17 403 2002 8 147.16 1.07 470 2002 9 147.67 1.10 419 2002 10 148.26 0.93 636 2002 11 148.57 1.32 589 2002 12 149.21 1.93 566 2003 1 150.11 1.33 353 2003 2 149.24 0.83 261 2003 3 150.64 2.18 232 2003 4 149.74 1.97 652 2003 5 147.47 2.35 255 2003 6 nan nan 0 2003 7 153.11 0.60 563 2003 8 154.21 0.53 633 2003 9 154.93 0.64 537 2003 10 154.97 0.63 307 2003 11 153.87 0.82 355 2003 12 153.60 0.57 533 2004 1 158.23 0.50 67 2004 2 nan nan 0 2004 3 155.56 1.71 398 2004 4 156.12 0.86 615 2004 5 156.38 0.77 648 2004 6 156.56 0.80 537 2004 7 157.11 0.74 483 2004 8 158.78 0.87 545 2004 9 158.81 1.88 650 2004 10 159.12 2.31 698 2004 11 160.12 2.69 564 2004 12 158.88 2.76 680 2005 1 161.97 1.60 608 2005 2 160.22 1.55 468 2005 3 161.83 1.52 632 2005 4 161.01 1.92 669 2005 5 160.44 1.58 598 2005 6 161.61 0.67 50 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 164.44 1.90 453 2005 10 165.65 2.45 79 2005 11 165.04 1.24 326 2005 12 165.82 1.14 583 2006 1 167.23 0.83 567 2006 2 170.25 1.48 278 2006 3 168.58 2.35 419 2006 4 167.89 4.60 36 2006 5 167.01 3.16 289 2006 6 166.56 2.52 427 2006 7 167.69 1.02 477 2006 8 167.31 1.26 296 2006 9 169.19 1.45 483 2006 10 170.31 1.90 261 2006 11 171.83 1.00 169 2006 12 171.91 1.24 388 2007 1 171.27 1.12 586 2007 2 175.97 1.14 163 2007 3 174.71 0.96 175 2007 4 nan nan 0 2007 5 173.79 7.38 165 2007 6 nan nan 0 2007 7 173.53 2.12 492 2007 8 174.57 2.64 496 2007 9 178.00 1.71 671 2007 10 179.24 2.49 431 2007 11 nan nan 0 2007 12 nan nan 0 2008 1 186.29 1.82 413 2008 2 182.88 1.94 599 2008 3 183.01 2.06 570 2008 4 182.44 2.03 681 2008 5 182.39 1.89 647 2008 6 184.09 1.90 622 2008 7 184.82 2.10 675 2008 8 186.26 2.05 491 2008 9 185.10 2.22 622 2008 10 186.14 2.52 497 2008 11 188.88 2.47 517 2008 12 191.72 1.94 661 2009 1 193.80 2.00 617 2009 2 190.19 2.16 613 2009 3 192.97 2.04 604 2009 4 191.54 2.07 588 2009 5 191.96 1.70 630 2009 6 193.98 2.07 388 2009 7 196.81 2.16 406 2009 8 196.36 2.30 568 2009 9 197.06 2.65 560 2009 10 191.89 4.36 426 2009 11 192.41 5.48 606 2009 12 194.27 3.74 592 2010 1 195.87 5.10 555 2010 2 195.13 2.80 521 2010 3 195.06 3.20 609 2010 4 nan nan 0 2010 5 nan nan 0 2010 6 193.02 2.31 116 2010 7 196.86 2.09 548 2010 8 201.55 2.33 600 2010 9 204.10 4.01 560 2010 10 203.27 4.83 528 2010 11 205.58 3.84 502 2010 12 204.54 2.35 176 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 10 198.30 2.27 221 2011 11 202.35 1.80 680 2011 12 204.34 1.65 724 2012 1 204.57 1.60 535 2012 2 205.03 1.64 634 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 1 210.99 1.36 245 2013 2 216.95 1.63 296 2013 3 218.44 2.36 298 2013 4 nan nan 0 2013 5 213.91 1.69 187 2013 6 217.89 1.99 369 2013 7 222.90 1.83 443 2013 8 219.00 1.64 548 2013 9 214.53 1.76 669 2013 10 220.04 2.01 713 2013 11 217.38 1.69 688 2013 12 220.28 2.11 671 2014 1 nan nan 0 2014 2 nan nan 0 2014 3 nan nan 0 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 nan nan 0 2014 9 nan nan 0 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