# file: brw_HCFC22_MM.dat # date: Wed, Sep 26, 2018 2:57:22 PM # # Hydrochlorofluorocarbon-22 (HCFC22) data from hourly in situ samples analyzed on a gas chromatograph located # at Pt. Barrow (BRW), Alaska (71.3 N, 156.6 W, elevation: 8 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 # HCFC22catsBRWyr HCFC22catsBRWmon HCFC22catsBRWm HCFC22catsBRWsd HCFC22catsBRWn 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 11 143.28 2.44 455 1998 12 146.62 1.47 556 1999 1 148.08 4.01 566 1999 2 146.11 1.94 447 1999 3 146.04 0.68 628 1999 4 145.86 0.66 592 1999 5 145.86 0.63 225 1999 6 145.46 1.21 398 1999 7 146.36 1.32 399 1999 8 nan nan 0 1999 9 nan nan 0 1999 10 nan nan 0 1999 11 150.53 1.46 532 1999 12 151.44 1.21 652 2000 1 151.69 0.81 668 2000 2 151.87 0.81 622 2000 3 151.78 1.33 527 2000 4 152.40 1.45 665 2000 5 153.77 1.20 723 2000 6 150.96 3.80 237 2000 7 150.89 1.26 402 2000 8 nan nan 0 2000 9 156.59 1.47 243 2000 10 149.82 1.10 411 2000 11 152.94 1.20 426 2000 12 154.87 1.00 345 2001 1 153.43 1.29 526 2001 2 152.41 1.26 481 2001 3 155.87 3.68 429 2001 4 155.27 1.57 485 2001 5 157.14 1.46 624 2001 6 156.47 1.63 405 2001 7 159.94 1.93 266 2001 8 159.14 1.57 422 2001 9 157.03 2.19 193 2001 10 160.63 1.52 25 2001 11 160.35 1.53 686 2001 12 163.30 2.31 434 2002 1 nan nan 0 2002 2 164.27 4.79 444 2002 3 160.70 13.55 264 2002 4 159.51 11.93 230 2002 5 160.42 12.48 66 2002 6 nan nan 0 2002 7 nan nan 0 2002 8 nan nan 0 2002 9 nan nan 0 2002 10 nan nan 0 2002 11 nan nan 0 2002 12 nan nan 0 2003 1 167.17 3.04 158 2003 2 167.81 13.61 365 2003 3 167.61 5.04 584 2003 4 167.59 2.95 580 2003 5 167.73 3.40 283 2003 6 167.98 6.50 248 2003 7 168.47 8.17 522 2003 8 169.92 6.32 506 2003 9 168.77 13.61 37 2003 10 nan nan 0 2003 11 nan nan 0 2003 12 165.81 2.42 108 2004 1 nan nan 0 2004 2 nan nan 0 2004 3 nan nan 0 2004 4 nan nan 0 2004 5 nan nan 0 2004 6 171.47 3.74 91 2004 7 171.68 2.52 613 2004 8 172.42 2.25 513 2004 9 174.68 1.96 653 2004 10 176.77 6.88 183 2004 11 175.17 1.93 398 2004 12 175.76 1.21 364 2005 1 176.80 1.10 613 2005 2 176.38 0.95 627 2005 3 176.20 1.05 709 2005 4 176.51 1.49 602 2005 5 177.29 2.19 389 2005 6 178.62 1.66 680 2005 7 179.19 2.11 338 2005 8 179.44 2.70 189 2005 9 180.07 5.07 228 2005 10 182.48 6.31 345 2005 11 181.99 1.67 623 2005 12 185.39 1.94 622 2006 1 185.78 1.77 698 2006 2 186.01 2.14 450 2006 3 186.05 1.74 621 2006 4 185.69 1.92 286 2006 5 187.04 6.00 362 2006 6 189.37 3.95 476 2006 7 188.17 3.26 251 2006 8 188.20 2.26 307 2006 9 191.26 4.48 183 2006 10 192.73 3.92 75 2006 11 193.68 4.94 519 2006 12 194.83 6.14 550 2007 1 193.66 5.47 671 2007 2 193.52 5.44 559 2007 3 192.79 4.99 519 2007 4 192.95 6.67 155 2007 5 nan nan 0 2007 6 192.43 3.70 542 2007 7 193.21 3.31 693 2007 8 194.76 4.40 296 2007 9 nan nan 0 2007 10 nan nan 0 2007 11 nan nan 0 2007 12 201.56 6.44 106 2008 1 205.21 8.55 471 2008 2 202.25 10.98 151 2008 3 203.68 2.22 693 2008 4 201.34 2.91 705 2008 5 201.96 3.31 582 2008 6 201.70 4.23 694 2008 7 202.51 3.76 731 2008 8 201.94 3.41 719 2008 9 201.02 2.16 610 2008 10 201.56 1.66 603 2008 11 205.48 2.09 499 2008 12 205.99 1.72 721 2009 1 206.90 1.91 507 2009 2 nan nan 0 2009 3 nan nan 0 2009 4 203.85 1.78 290 2009 5 207.97 1.99 694 2009 6 209.56 2.09 655 2009 7 205.84 1.76 736 2009 8 208.78 1.85 706 2009 9 206.19 1.78 636 2009 10 205.77 1.53 746 2009 11 205.89 1.63 702 2009 12 206.71 1.47 647 2010 1 206.55 1.38 477 2010 2 nan nan 0 2010 3 nan nan 0 2010 4 209.14 1.43 264 2010 5 215.17 1.70 318 2010 6 219.04 2.15 386 2010 7 213.82 1.79 649 2010 8 217.38 2.10 736 2010 9 218.10 2.88 668 2010 10 220.11 2.21 563 2010 11 218.22 1.30 574 2010 12 218.92 1.39 694 2011 1 219.66 1.33 681 2011 2 219.18 1.28 670 2011 3 219.28 1.43 618 2011 4 217.27 1.33 316 2011 5 220.93 1.45 460 2011 6 224.01 1.78 650 2011 7 220.21 2.06 731 2011 8 219.60 1.56 741 2011 9 220.43 1.56 722 2011 10 221.02 1.24 722 2011 11 222.96 1.32 653 2011 12 219.38 1.42 665 2012 1 218.08 1.21 744 2012 2 215.88 1.36 676 2012 3 215.33 1.53 726 2012 4 217.66 1.90 694 2012 5 229.94 2.88 650 2012 6 230.99 1.99 691 2012 7 217.75 1.36 397 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 nan nan 0 2013 9 nan nan 0 2013 10 nan nan 0 2013 11 nan nan 0 2013 12 nan nan 0 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