# file: brw_N2O_MM.dat # date: 2023-04-13 # # Nitrous Oxide (N2O) 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/GML 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. # # Data use policy see https://gml.noaa.gov/hats/hats_datause.html # # Citation: # G.S. Dutton and B.D. Hall (2023), # Global Atmospheric Nitrous Oxide Dry Air Mole Fractions from the # NOAA GML Halocarbons in situ Network, 1998-2023, Version: 2023-04-13, # https://doi.org/10.7289/V5X0659V # # For contact information see https://gml.noaa.gov/about/stafflist.html # # Calibration scale used: NOAA 2006A # More information about the calibration scale can be found at: https://gml.noaa.gov/ccl/ # # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # The CATS GCs sample air once an hour. Monthly median data are provided in parts-per-billion, ppb. # 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 N2O in ppb, uncertainty (unc), std. dev. (sd), number of samples # N2OcatsBRWyr N2OcatsBRWmon N2OcatsBRWm N2OcatsBRWunc N2OcatsBRWsd N2OcatsBRWn 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 6 313.90 1.19 1.00 293 1998 7 313.66 1.07 1.00 655 1998 8 313.48 1.18 1.10 237 1998 9 313.40 0.88 0.93 309 1998 10 313.61 1.10 1.07 644 1998 11 314.67 0.91 1.15 624 1998 12 314.26 0.71 0.78 658 1999 1 314.74 0.30 0.40 610 1999 2 314.73 0.22 0.32 490 1999 3 314.75 0.23 0.32 581 1999 4 314.76 0.24 0.37 508 1999 5 314.94 0.33 0.32 361 1999 6 314.62 0.41 0.40 504 1999 7 314.41 0.24 0.39 569 1999 8 314.31 0.25 0.35 587 1999 9 314.35 0.24 0.34 551 1999 10 314.67 0.24 0.32 374 1999 11 315.31 0.31 0.38 414 1999 12 315.59 0.26 0.38 571 2000 1 315.94 0.30 0.34 466 2000 2 316.14 0.30 0.36 553 2000 3 316.04 0.25 0.34 575 2000 4 316.18 0.27 0.35 410 2000 5 316.22 0.27 0.33 477 2000 6 316.21 0.38 0.41 357 2000 7 315.94 0.43 0.40 426 2000 8 315.93 0.43 0.41 340 2000 9 315.83 0.34 0.35 75 2000 10 316.21 0.32 0.36 297 2000 11 316.42 0.36 0.43 496 2000 12 316.70 0.39 0.42 556 2001 1 316.76 0.50 0.44 219 2001 2 316.92 0.64 0.44 256 2001 3 317.01 0.45 0.40 434 2001 4 317.06 0.44 0.40 500 2001 5 316.93 0.35 0.44 568 2001 6 316.90 0.49 0.46 529 2001 7 316.59 0.68 0.56 541 2001 8 316.21 0.65 0.57 393 2001 9 316.35 0.61 0.57 497 2001 10 316.70 0.65 0.56 354 2001 11 317.07 0.60 0.50 621 2001 12 317.19 0.59 0.52 304 2002 1 317.13 0.61 0.64 130 2002 2 317.69 0.51 0.43 157 2002 3 317.71 0.60 0.49 547 2002 4 317.64 0.80 0.56 444 2002 5 317.63 1.09 0.65 493 2002 6 317.34 0.94 0.69 522 2002 7 317.08 0.83 0.61 513 2002 8 316.96 0.92 0.61 499 2002 9 317.09 0.97 0.67 497 2002 10 317.22 0.84 0.71 512 2002 11 317.42 0.83 0.65 516 2002 12 317.72 0.84 0.66 515 2003 1 317.86 0.77 0.65 623 2003 2 318.21 0.74 0.65 446 2003 3 318.38 0.79 0.58 607 2003 4 318.42 0.75 0.59 552 2003 5 318.44 0.76 0.59 642 2003 6 318.31 0.63 0.67 407 2003 7 318.18 1.09 0.65 573 2003 8 317.85 0.94 0.62 528 2003 9 317.79 0.96 0.64 478 2003 10 318.03 0.87 0.80 559 2003 11 318.29 1.14 0.74 555 2003 12 318.39 1.05 0.73 403 2004 1 318.64 0.83 0.64 639 2004 2 318.71 0.88 0.83 554 2004 3 318.66 0.95 0.76 375 2004 4 318.97 0.80 0.69 304 2004 5 319.00 1.11 0.81 92 2004 6 318.90 0.81 0.52 107 2004 7 318.56 0.50 0.40 653 2004 8 318.41 0.50 0.42 514 2004 9 318.30 0.33 0.29 597 2004 10 318.65 0.32 0.40 351 2004 11 318.89 0.29 0.33 617 2004 12 319.16 0.28 0.30 680 2005 1 319.47 0.33 0.31 602 2005 2 319.57 0.31 0.31 562 2005 3 319.56 0.30 0.31 632 2005 4 319.66 0.31 0.32 609 2005 5 319.71 0.34 0.31 611 2005 6 319.62 0.35 0.34 601 2005 7 319.47 0.50 0.37 622 2005 8 319.44 0.59 0.39 579 2005 9 319.33 0.34 0.34 659 2005 10 319.52 0.32 0.32 623 2005 11 319.65 0.27 0.32 640 2005 12 320.33 0.28 0.34 647 2006 1 320.45 0.26 0.30 628 2006 2 320.55 0.31 0.29 565 2006 3 320.64 0.25 0.27 654 2006 4 320.62 0.27 0.27 581 2006 5 320.75 0.33 0.31 644 2006 6 320.63 0.33 0.31 635 2006 7 320.32 0.35 0.37 666 2006 8 319.96 0.23 0.34 721 2006 9 320.07 0.25 0.44 696 2006 10 320.40 0.29 0.43 653 2006 11 320.69 0.61 0.74 507 2006 12 320.72 0.94 0.73 155 2007 1 nan nan nan 0 2007 2 nan nan nan 0 2007 3 nan nan nan 0 2007 4 nan nan nan 0 2007 5 nan nan nan 0 2007 6 321.21 0.36 0.60 584 2007 7 321.11 0.37 0.57 537 2007 8 321.20 0.39 0.55 702 2007 9 321.26 0.37 0.58 686 2007 10 321.32 0.36 0.59 708 2007 11 321.64 0.39 0.57 588 2007 12 321.81 0.35 0.54 643 2008 1 321.98 0.36 0.50 666 2008 2 322.29 0.36 0.49 620 2008 3 322.32 0.38 0.50 623 2008 4 322.34 0.36 0.49 659 2008 5 322.35 0.31 0.55 641 2008 6 322.19 0.40 0.56 640 2008 7 322.05 0.46 0.52 667 2008 8 321.77 0.46 0.54 632 2008 9 322.09 0.43 0.53 663 2008 10 322.42 0.36 0.56 641 2008 11 322.61 0.38 0.53 697 2008 12 322.87 0.39 0.55 721 2009 1 323.01 0.41 0.54 649 2009 2 323.05 0.40 0.51 659 2009 3 323.13 0.38 0.51 734 2009 4 323.12 0.38 0.55 381 2009 5 323.03 0.34 0.54 685 2009 6 322.83 0.33 0.54 653 2009 7 322.92 0.36 0.57 726 2009 8 322.87 0.39 0.54 687 2009 9 322.82 0.34 0.57 572 2009 10 323.09 0.31 0.60 736 2009 11 323.25 0.34 0.53 718 2009 12 323.49 0.39 0.56 677 2010 1 323.70 0.36 0.52 661 2010 2 323.85 0.33 0.54 509 2010 3 323.94 0.39 0.59 668 2010 4 324.08 0.35 0.57 710 2010 5 323.85 0.34 0.60 519 2010 6 323.73 0.37 0.60 345 2010 7 323.66 0.41 0.62 641 2010 8 323.46 0.39 0.61 721 2010 9 323.49 0.38 0.58 658 2010 10 323.67 0.40 0.59 272 2010 11 324.07 0.36 0.57 706 2010 12 324.34 0.38 0.53 681 2011 1 324.54 0.43 0.59 661 2011 2 324.61 0.42 0.58 647 2011 3 324.69 0.41 0.61 727 2011 4 324.76 0.44 0.67 471 2011 5 324.78 0.46 0.72 531 2011 6 324.56 0.43 0.71 690 2011 7 324.43 0.39 0.67 712 2011 8 324.27 0.46 0.72 740 2011 9 324.45 0.44 0.72 714 2011 10 324.78 0.50 0.75 719 2011 11 325.03 0.61 0.94 606 2011 12 325.38 0.64 1.00 678 2012 1 325.62 0.74 1.12 719 2012 2 325.52 0.75 1.11 661 2012 3 325.76 0.77 1.19 700 2012 4 325.94 0.61 0.98 670 2012 5 325.85 0.64 1.05 535 2012 6 325.51 1.32 2.04 674 2012 7 324.99 1.31 1.85 497 2012 8 325.14 1.24 2.26 661 2012 9 325.02 1.46 2.72 598 2012 10 325.56 1.34 2.62 666 2012 11 325.96 1.17 2.45 693 2012 12 326.19 1.33 2.72 721 2013 1 326.25 1.09 2.11 719 2013 2 326.59 1.36 2.19 662 2013 3 326.66 1.18 2.19 724 2013 4 326.71 1.27 1.97 655 2013 5 326.77 1.24 2.38 692 2013 6 326.68 0.18 0.37 705 2013 7 326.58 0.26 0.38 685 2013 8 326.24 0.36 0.34 657 2013 9 326.09 0.29 0.32 662 2013 10 326.46 0.21 0.34 709 2013 11 326.71 0.22 0.29 686 2013 12 327.02 0.20 0.28 668 2014 1 327.05 0.25 0.36 301 2014 2 327.22 0.34 0.36 546 2014 3 327.48 0.39 0.37 593 2014 4 327.53 0.50 0.38 648 2014 5 327.86 0.50 0.39 655 2014 6 327.67 0.28 0.44 550 2014 7 nan nan nan 0 2014 8 nan nan nan 0 2014 9 327.71 0.32 0.41 279 2014 10 327.85 0.26 0.37 702 2014 11 328.20 0.29 0.37 692 2014 12 328.33 0.28 0.36 694 2015 1 328.48 0.26 0.35 703 2015 2 328.61 0.29 0.37 634 2015 3 328.61 0.24 0.31 701 2015 4 328.70 0.23 0.37 660 2015 5 328.78 0.26 0.40 720 2015 6 328.69 0.30 0.45 658 2015 7 328.34 0.22 0.38 700 2015 8 328.25 0.21 0.35 705 2015 9 328.26 0.22 0.33 678 2015 10 328.55 0.20 0.30 664 2015 11 328.78 0.23 0.32 579 2015 12 329.09 0.21 0.33 695 2016 1 329.33 0.22 0.31 680 2016 2 329.39 0.20 0.30 656 2016 3 329.42 0.19 0.30 669 2016 4 329.50 0.20 0.30 664 2016 5 329.59 0.19 0.33 691 2016 6 329.41 0.24 0.33 642 2016 7 329.36 0.20 0.38 685 2016 8 329.10 0.21 0.31 699 2016 9 329.06 0.21 0.33 676 2016 10 329.35 0.22 0.38 705 2016 11 329.68 0.21 0.32 655 2016 12 330.02 0.21 0.31 651 2017 1 330.26 0.22 0.29 616 2017 2 330.44 0.21 0.30 393 2017 3 330.58 0.21 0.33 710 2017 4 330.45 0.23 0.38 703 2017 5 330.38 0.48 0.37 616 2017 6 nan nan nan 0 2017 7 nan nan nan 0 2017 8 nan nan nan 0 2017 9 329.69 2.40 2.41 219 2017 10 330.49 2.35 2.06 726 2017 11 331.09 2.41 1.67 700 2017 12 331.21 2.37 1.66 718 2018 1 331.23 3.07 2.26 680 2018 2 331.48 2.62 2.29 551 2018 3 331.43 0.28 0.44 721 2018 4 331.61 0.29 0.46 700 2018 5 331.67 0.29 0.45 730 2018 6 331.37 0.28 0.48 703 2018 7 331.26 0.30 0.52 741 2018 8 330.96 0.35 0.54 690 2018 9 331.11 0.33 0.56 702 2018 10 331.41 0.36 0.59 618 2018 11 331.79 0.38 0.66 708 2018 12 332.03 0.43 0.68 724 2019 1 332.30 0.48 0.82 733 2019 2 332.55 0.55 0.90 636 2019 3 332.55 0.43 0.74 700 2019 4 332.55 0.53 0.87 692 2019 5 332.55 0.62 1.12 711 2019 6 332.28 0.56 1.05 694 2019 7 332.11 0.58 0.96 692 2019 8 331.82 0.49 0.83 698 2019 9 331.92 0.57 1.02 607 2019 10 332.10 0.66 1.13 740 2019 11 332.48 0.70 1.14 693 2019 12 332.65 0.67 1.18 706 2020 1 332.93 0.60 1.07 732 2020 2 333.15 0.50 0.84 693 2020 3 333.57 0.57 0.96 727 2020 4 333.74 0.48 0.77 720 2020 5 333.79 0.48 0.80 737 2020 6 333.83 0.46 0.82 716 2020 7 333.77 0.56 0.94 716 2020 8 333.87 0.47 0.74 734 2020 9 333.93 0.38 0.57 704 2020 10 334.11 0.47 0.62 578 2020 11 334.38 0.45 0.64 510 2020 12 334.36 0.42 0.60 608 2021 1 334.41 0.40 0.64 502 2021 2 334.67 0.35 0.57 612 2021 3 334.78 0.38 0.61 725 2021 4 334.98 0.39 0.61 695 2021 5 334.83 0.44 0.65 578 2021 6 334.75 0.40 0.69 708 2021 7 334.71 0.43 0.72 698 2021 8 334.45 0.43 0.65 724 2021 9 334.58 0.41 0.68 704 2021 10 334.94 0.42 0.74 721 2021 11 335.25 0.45 0.71 702 2021 12 335.51 0.46 0.73 732 2022 1 335.85 0.44 0.69 709 2022 2 336.05 0.43 0.68 636 2022 3 336.07 0.45 0.70 687 2022 4 336.08 0.42 0.69 700 2022 5 336.22 0.44 0.68 702 2022 6 336.04 0.66 0.84 654 2022 7 336.13 0.76 1.09 352 2022 8 335.45 1.78 2.38 154 2022 9 335.62 1.65 2.16 708 2022 10 335.88 1.24 1.77 694 2022 11 336.57 1.38 1.83 688 2022 12 336.64 0.77 1.03 740 2023 1 336.83 0.90 1.27 720 2023 2 336.97 1.11 1.30 630 2023 3 337.12 0.85 1.01 710 2023 4 337.13 0.50 0.74 236