# file: brw_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 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-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 # HCFC142bcatsBRWyr HCFC142bcatsBRWmon HCFC142bcatsBRWm HCFC142bcatsBRWsd HCFC142bcatsBRWn 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 10.50 1.84 253 1998 10 10.50 1.79 578 1998 11 10.54 1.79 534 1998 12 11.79 1.83 594 1999 1 11.64 1.60 604 1999 2 12.01 1.05 599 1999 3 11.90 0.73 699 1999 4 12.06 0.74 596 1999 5 12.20 1.10 382 1999 6 12.14 0.85 590 1999 7 12.41 1.01 561 1999 8 12.39 0.98 670 1999 9 12.53 1.06 414 1999 10 nan nan 0 1999 11 12.98 0.98 591 1999 12 12.91 0.95 659 2000 1 13.09 0.71 685 2000 2 13.06 0.76 654 2000 3 13.19 0.78 662 2000 4 12.95 0.94 652 2000 5 13.14 1.00 696 2000 6 13.21 1.07 575 2000 7 13.30 1.34 542 2000 8 11.25 1.90 474 2000 9 13.05 1.46 572 2000 10 13.54 0.88 642 2000 11 13.73 0.88 640 2000 12 13.70 0.79 709 2001 1 13.87 0.90 651 2001 2 13.99 1.07 563 2001 3 13.93 1.66 600 2001 4 14.04 1.42 534 2001 5 13.89 1.34 705 2001 6 14.14 1.49 614 2001 7 14.14 1.28 596 2001 8 14.26 0.97 547 2001 9 14.24 1.24 549 2001 10 14.84 1.17 405 2001 11 14.29 1.71 676 2001 12 14.62 1.74 434 2002 1 13.66 2.62 310 2002 2 14.54 1.66 501 2002 3 14.56 1.95 652 2002 4 14.21 1.87 505 2002 5 14.24 1.80 127 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 13.63 2.74 163 2003 1 14.58 2.35 140 2003 2 14.85 2.20 568 2003 3 15.03 1.81 665 2003 4 15.56 1.89 621 2003 5 15.15 1.87 662 2003 6 15.23 2.14 327 2003 7 16.16 1.90 516 2003 8 14.74 2.41 578 2003 9 16.93 2.11 39 2003 10 nan nan 0 2003 11 nan nan 0 2003 12 15.38 2.75 370 2004 1 16.92 1.75 32 2004 2 15.52 1.90 169 2004 3 14.07 2.58 212 2004 4 15.80 2.03 284 2004 5 13.92 2.62 108 2004 6 15.52 1.67 85 2004 7 15.69 1.78 628 2004 8 15.50 1.50 536 2004 9 15.93 1.63 656 2004 10 15.85 1.61 285 2004 11 16.24 1.29 647 2004 12 16.01 1.55 421 2005 1 16.17 1.41 642 2005 2 16.26 1.29 637 2005 3 15.91 1.24 684 2005 4 16.05 1.58 641 2005 5 16.39 1.71 676 2005 6 16.11 1.52 682 2005 7 16.49 1.83 648 2005 8 16.72 1.70 640 2005 9 16.49 1.70 631 2005 10 16.42 1.60 659 2005 11 16.99 1.53 676 2005 12 17.31 1.61 715 2006 1 17.87 1.59 705 2006 2 17.13 1.72 619 2006 3 17.30 1.51 695 2006 4 17.15 1.38 615 2006 5 17.88 1.63 715 2006 6 18.07 1.58 615 2006 7 18.81 1.95 562 2006 8 18.60 1.70 666 2006 9 17.60 2.34 619 2006 10 17.28 2.94 528 2006 11 16.39 2.53 478 2006 12 16.85 2.72 603 2007 1 17.18 2.52 609 2007 2 16.96 2.80 564 2007 3 17.36 2.65 597 2007 4 16.73 3.03 529 2007 5 17.89 2.80 478 2007 6 16.91 3.06 545 2007 7 18.00 3.15 577 2007 8 17.63 3.51 351 2007 9 nan nan 0 2007 10 nan nan 0 2007 11 18.37 2.58 196 2007 12 18.21 3.27 582 2008 1 18.31 3.18 595 2008 2 18.35 3.34 594 2008 3 18.91 2.83 594 2008 4 19.15 3.20 561 2008 5 17.85 3.75 572 2008 6 18.26 3.54 574 2008 7 17.24 3.35 619 2008 8 18.26 3.21 599 2008 9 19.83 2.63 559 2008 10 20.26 2.61 608 2008 11 19.52 2.75 494 2008 12 19.98 2.31 687 2009 1 19.98 2.14 496 2009 2 nan nan 0 2009 3 nan nan 0 2009 4 19.12 1.91 273 2009 5 19.17 2.74 667 2009 6 19.69 2.77 634 2009 7 20.41 3.10 664 2009 8 20.98 3.23 645 2009 9 20.23 3.24 585 2009 10 20.49 3.24 686 2009 11 21.20 2.80 670 2009 12 19.85 2.51 605 2010 1 20.96 2.41 434 2010 2 nan nan 0 2010 3 nan nan 0 2010 4 17.94 2.05 415 2010 5 19.54 2.51 605 2010 6 20.28 2.52 685 2010 7 20.67 2.85 600 2010 8 21.25 2.98 687 2010 9 21.19 3.33 629 2010 10 21.30 2.94 558 2010 11 20.38 2.50 551 2010 12 20.89 2.87 561 2011 1 21.07 2.89 439 2011 2 20.27 2.23 424 2011 3 19.40 2.39 374 2011 4 21.24 2.36 349 2011 5 19.31 2.60 391 2011 6 19.68 2.62 581 2011 7 21.29 2.80 677 2011 8 22.17 2.94 716 2011 9 22.12 2.12 688 2011 10 21.73 1.81 702 2011 11 21.92 1.91 626 2011 12 20.76 2.04 523 2012 1 21.13 1.87 687 2012 2 20.63 1.68 401 2012 3 21.63 1.95 663 2012 4 20.22 1.45 255 2012 5 nan nan 0 2012 6 22.91 1.64 510 2012 7 22.95 1.72 495 2012 8 22.62 2.16 449 2012 9 nan nan 0 2012 10 nan nan 0 2012 11 nan nan 0 2012 12 22.35 1.64 152 2013 1 22.80 1.98 379 2013 2 22.15 1.40 186 2013 3 22.22 1.42 170 2013 4 23.31 1.93 220 2013 5 22.63 1.96 596 2013 6 22.39 1.85 251 2013 7 23.31 1.74 195 2013 8 22.01 1.76 550 2013 9 22.25 1.74 642 2013 10 22.59 1.98 679 2013 11 22.04 1.95 683 2013 12 22.12 2.13 716 2014 1 21.79 2.32 482 2014 2 21.12 1.91 580 2014 3 21.25 2.03 619 2014 4 21.70 2.10 678 2014 5 21.64 2.27 675 2014 6 22.04 2.18 636 2014 7 21.55 1.94 640 2014 8 21.86 1.88 650 2014 9 21.53 2.24 622 2014 10 22.06 2.21 119 2014 11 21.76 2.06 357 2014 12 22.03 1.92 676 2015 1 21.80 2.00 689 2015 2 21.59 1.89 636 2015 3 21.27 2.02 707 2015 4 21.78 1.90 642 2015 5 21.29 1.99 641 2015 6 22.02 1.90 599 2015 7 21.62 1.83 597 2015 8 21.58 2.13 560 2015 9 21.23 2.24 589 2015 10 21.73 2.02 635 2015 11 22.67 2.24 562 2015 12 22.75 2.26 642 2016 1 23.04 1.95 630 2016 2 22.73 1.99 605 2016 3 22.49 1.92 650 2016 4 22.27 2.13 651 2016 5 22.93 2.14 669 2016 6 22.52 1.97 634 2016 7 22.57 1.79 619 2016 8 22.72 2.08 443 2016 9 23.24 1.99 31 2016 10 22.37 1.78 665 2016 11 22.30 1.86 656 2016 12 22.33 2.09 417 2017 1 nan nan 0 2017 2 nan nan 0 2017 3 nan nan 0 2017 4 22.55 2.53 231 2017 5 22.17 1.95 314 2017 6 22.40 1.68 311 2017 7 22.80 1.94 367 2017 8 21.99 1.79 399 2017 9 22.60 2.00 419 2017 10 21.97 2.03 477 2017 11 22.18 2.02 475 2017 12 23.01 2.19 609 2018 1 21.50 2.40 326 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