# file: nwr_N2O_MM.dat # date: Mon, Mar 8, 2021 2:23:24 PM # # Nitrous Oxide (N2O) data from hourly in situ samples analyzed on a gas chromatograph located # at Niwot Ridge (NWR), Colorado (C-1 site: 40.04 N, 105.54 W, elevation: 3018 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/GML # 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: Nitrous Oxide data from # the NOAA/ESRL halocarbons in situ program. # # DOI: http://doi.org/10.7289/V5X0659V # # Calibration scale used: NOAA 2006A # # 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-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 # N2OcatsNWRyr N2OcatsNWRmon N2OcatsNWRm N2OcatsNWRunc N2OcatsNWRsd N2OcatsNWRn 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 nan nan nan 0 1998 7 nan nan nan 0 1998 8 nan nan nan 0 1998 9 nan nan nan 0 1998 10 nan nan nan 0 1998 11 nan nan nan 0 1998 12 nan nan nan 0 1999 1 nan nan nan 0 1999 2 nan nan nan 0 1999 3 nan nan nan 0 1999 4 nan nan nan 0 1999 5 nan nan nan 0 1999 6 nan nan nan 0 1999 7 nan nan nan 0 1999 8 nan nan nan 0 1999 9 nan nan nan 0 1999 10 nan nan nan 0 1999 11 nan nan nan 0 1999 12 nan nan nan 0 2000 1 nan nan nan 0 2000 2 nan nan nan 0 2000 3 nan nan nan 0 2000 4 nan nan nan 0 2000 5 nan nan nan 0 2000 6 nan nan nan 0 2000 7 nan nan nan 0 2000 8 nan nan nan 0 2000 9 nan nan nan 0 2000 10 nan nan nan 0 2000 11 nan nan nan 0 2000 12 nan nan nan 0 2001 1 317.19 0.96 1.00 354 2001 2 316.94 1.11 1.07 424 2001 3 317.15 0.90 1.01 576 2001 4 316.99 0.96 1.05 688 2001 5 316.97 1.12 1.08 678 2001 6 317.27 1.26 1.28 188 2001 7 317.36 0.87 1.13 680 2001 8 317.03 3.18 1.92 485 2001 9 317.28 3.70 2.18 617 2001 10 317.24 2.30 2.15 736 2001 11 317.63 2.65 2.24 694 2001 12 317.82 2.76 1.98 556 2002 1 317.77 1.79 1.50 481 2002 2 317.80 1.61 1.22 634 2002 3 317.88 1.19 1.04 698 2002 4 317.59 1.30 1.26 697 2002 5 317.79 1.90 1.61 697 2002 6 318.54 0.88 1.05 693 2002 7 318.65 0.59 0.77 699 2002 8 318.12 0.47 0.64 618 2002 9 318.90 0.49 0.60 160 2002 10 318.84 4.08 1.35 528 2002 11 318.37 4.31 1.30 571 2002 12 318.62 1.41 1.10 627 2003 1 318.68 1.05 0.82 564 2003 2 318.83 0.77 0.83 481 2003 3 318.80 0.73 0.86 464 2003 4 318.74 0.73 0.88 688 2003 5 318.87 0.75 0.87 656 2003 6 318.99 1.46 1.81 503 2003 7 318.99 1.54 1.82 579 2003 8 318.51 1.33 1.56 716 2003 9 318.50 1.38 1.60 586 2003 10 318.73 1.09 1.32 580 2003 11 318.80 1.12 1.19 621 2003 12 318.80 1.40 1.22 603 2004 1 318.89 1.68 1.37 620 2004 2 318.94 1.24 1.28 530 2004 3 318.81 0.86 0.82 432 2004 4 319.05 0.74 0.93 350 2004 5 318.70 0.83 0.84 83 2004 6 318.63 3.46 1.85 113 2004 7 318.79 2.63 1.80 392 2004 8 318.86 3.88 1.61 287 2004 9 319.03 3.83 1.67 335 2004 10 319.24 1.44 1.60 601 2004 11 319.84 1.78 1.52 644 2004 12 319.44 1.94 1.45 582 2005 1 nan nan nan 0 2005 2 nan nan nan 0 2005 3 nan nan nan 0 2005 4 nan nan nan 0 2005 5 nan nan nan 0 2005 6 nan nan nan 0 2005 7 319.12 3.49 3.23 446 2005 8 319.67 2.76 2.61 203 2005 9 318.73 3.02 2.45 280 2005 10 nan nan nan 0 2005 11 nan nan nan 0 2005 12 nan nan nan 0 2006 1 319.99 2.52 2.56 55 2006 2 319.98 2.35 2.37 321 2006 3 319.84 2.59 2.30 363 2006 4 319.69 2.58 2.36 159 2006 5 nan nan nan 0 2006 6 nan nan nan 0 2006 7 nan nan nan 0 2006 8 nan nan nan 0 2006 9 nan nan nan 0 2006 10 nan nan nan 0 2006 11 nan nan nan 0 2006 12 nan nan nan 0 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 nan nan nan 0 2007 7 nan nan nan 0 2007 8 nan nan nan 0 2007 9 nan nan nan 0 2007 10 nan nan nan 0 2007 11 321.57 1.17 0.90 444 2007 12 321.58 1.40 0.95 488 2008 1 321.80 1.05 0.83 719 2008 2 321.94 0.90 0.69 692 2008 3 321.93 0.85 0.69 735 2008 4 321.91 0.96 0.75 707 2008 5 321.83 0.67 0.71 703 2008 6 321.94 0.83 0.78 703 2008 7 322.14 0.75 0.75 713 2008 8 322.44 0.71 0.77 694 2008 9 322.17 0.58 0.65 699 2008 10 322.30 0.74 0.74 726 2008 11 322.33 0.83 0.66 623 2008 12 322.39 0.96 0.76 724 2009 1 322.37 0.88 0.72 727 2009 2 322.38 0.94 0.69 650 2009 3 322.42 0.72 0.65 735 2009 4 322.46 0.78 0.73 675 2009 5 322.54 0.62 0.59 735 2009 6 322.62 0.51 0.60 710 2009 7 322.84 0.49 0.57 732 2009 8 322.74 0.56 0.62 733 2009 9 322.93 0.52 0.55 667 2009 10 322.86 0.86 0.69 635 2009 11 323.10 1.04 0.69 639 2009 12 323.17 1.38 0.79 559 2010 1 323.36 1.42 0.75 565 2010 2 323.49 1.41 0.73 437 2010 3 323.53 1.49 0.77 515 2010 4 323.43 1.17 0.86 371 2010 5 323.51 1.28 0.78 431 2010 6 323.78 1.32 0.46 79 2010 7 323.73 0.79 0.65 569 2010 8 323.78 0.69 0.59 726 2010 9 323.66 0.70 0.62 703 2010 10 323.94 0.75 0.63 720 2010 11 323.97 0.94 0.66 695 2010 12 324.27 0.81 0.68 695 2011 1 324.26 1.09 0.88 708 2011 2 324.25 1.16 0.79 658 2011 3 324.29 0.78 0.65 741 2011 4 324.43 0.76 0.66 709 2011 5 324.36 0.71 0.73 721 2011 6 324.15 0.69 0.64 567 2011 7 324.69 0.78 0.73 721 2011 8 324.94 0.74 0.69 733 2011 9 324.87 0.75 0.56 708 2011 10 324.94 0.88 0.66 726 2011 11 325.16 1.22 0.78 586 2011 12 325.31 1.11 0.72 644 2012 1 325.31 1.12 0.75 344 2012 2 nan nan nan 0 2012 3 325.35 0.95 0.69 473 2012 4 325.42 0.88 0.71 711 2012 5 325.35 0.62 0.64 740 2012 6 325.36 0.66 0.68 630 2012 7 325.64 0.71 0.66 625 2012 8 325.45 0.67 0.64 742 2012 9 325.52 0.63 0.59 712 2012 10 325.54 0.91 0.65 676 2012 11 325.77 0.91 0.69 712 2012 12 325.82 1.09 0.76 736 2013 1 325.95 0.93 0.70 696 2013 2 325.97 0.87 0.66 613 2013 3 325.94 0.74 0.64 742 2013 4 326.01 0.63 0.77 712 2013 5 326.21 0.95 0.84 440 2013 6 326.47 0.64 0.64 709 2013 7 326.80 0.78 0.74 730 2013 8 326.81 0.51 0.54 737 2013 9 326.92 0.83 0.78 672 2013 10 326.67 1.06 0.81 722 2013 11 326.61 1.49 1.46 660 2013 12 326.80 1.43 1.38 696 2014 1 326.99 1.32 1.02 219 2014 2 326.99 0.91 0.62 161 2014 3 nan nan nan 0 2014 4 327.45 0.94 0.66 417 2014 5 327.64 0.82 0.67 531 2014 6 327.62 0.58 0.68 651 2014 7 328.04 2.29 1.66 631 2014 8 327.96 2.56 1.61 554 2014 9 328.43 1.29 1.35 473 2014 10 328.04 1.91 1.88 678 2014 11 327.98 2.40 2.47 661 2014 12 328.19 2.29 1.79 634 2015 1 328.08 1.79 1.26 107 2015 2 328.34 1.11 1.20 182 2015 3 328.28 1.17 1.14 722 2015 4 328.39 1.01 0.86 697 2015 5 328.50 1.07 0.89 641 2015 6 nan nan nan 0 2015 7 nan nan nan 0 2015 8 328.30 0.62 1.36 388 2015 9 329.02 1.54 2.36 430 2015 10 329.03 1.25 2.21 533 2015 11 329.08 1.30 2.32 433 2015 12 329.02 1.45 1.57 418 2016 1 328.69 1.70 1.56 67 2016 2 328.92 1.73 1.36 145 2016 3 329.28 1.26 1.33 305 2016 4 329.37 1.39 1.44 496 2016 5 329.33 1.66 1.07 70 2016 6 329.40 1.14 1.09 312 2016 7 329.41 0.68 1.18 558 2016 8 329.30 0.83 1.47 589 2016 9 329.46 1.07 1.51 627 2016 10 329.90 1.35 2.02 580 2016 11 329.89 1.10 1.85 506 2016 12 329.86 0.48 1.22 646 2017 1 329.86 0.43 1.13 616 2017 2 329.94 1.00 1.09 207 2017 3 nan nan nan 0 2017 4 nan nan nan 0 2017 5 nan nan nan 0 2017 6 nan nan nan 0 2017 7 nan nan nan 0 2017 8 nan nan nan 0 2017 9 nan nan nan 0 2017 10 331.04 1.47 1.83 100 2017 11 331.11 1.47 1.99 449 2017 12 330.76 1.24 1.50 522 2018 1 330.91 1.10 1.40 576 2018 2 331.02 0.67 1.25 589 2018 3 330.98 1.60 1.63 603 2018 4 330.98 2.08 1.62 346 2018 5 nan nan nan 0 2018 6 331.31 0.84 1.37 545 2018 7 331.37 0.88 1.39 323 2018 8 331.73 0.61 1.58 715 2018 9 331.88 0.91 1.52 507 2018 10 nan nan nan 0 2018 11 nan nan nan 0 2018 12 nan nan nan 0 2019 1 nan nan nan 0 2019 2 nan nan nan 0 2019 3 nan nan nan 0 2019 4 331.30 4.04 0.83 125 2019 5 331.18 3.26 0.89 312 2019 6 331.23 3.96 0.68 198 2019 7 331.24 0.82 0.48 484 2019 8 331.26 0.63 0.51 639 2019 9 331.24 3.64 0.75 335 2019 10 331.12 1.28 0.61 134 2019 11 331.23 1.26 0.92 108 2019 12 331.27 1.38 1.37 554 2020 1 331.32 1.53 1.41 690 2020 2 331.63 1.11 1.19 57 2020 3 nan nan nan 0 2020 4 nan nan nan 0 2020 5 331.62 1.14 0.51 227 2020 6 331.68 1.14 0.48 469 2020 7 331.68 0.89 0.52 631 2020 8 331.72 0.83 0.60 693 2020 9 331.73 1.18 0.92 379 2020 10 331.63 1.53 1.11 638 2020 11 331.51 1.51 1.14 618 2020 12 331.44 1.82 1.25 525 2021 1 331.60 1.75 1.75 643 2021 2 331.64 1.46 1.55 640 2021 3 331.61 1.68 2.05 141