# file: smo_N2O_MM.dat # # Nitrous Oxide (N2O) 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 Radiatively Important Trace # Species (RITS) program. The RITS program started in 1983 and continued # until 2000. A detailed history of the RITS program can be found at # http://www.esrl.noaa.gov/gmd/hats/insitu/insitu.html # # PIs: Dr. James W. Elkins, Dr. Bradley D. Hall, J. David Nance # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GMD1 # Boulder, CO 80305-3328 # # 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. 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. # # Calibration scale used: NOAA 2006 # # More information about the calibration scale can be found at: # http://www.esrl.noaa.gov/gmd/ccl/ # # The RITS GCs sampled once per hour from the early 1990s onward. # Monthly-averaged data are provided in parts-per-billion (ppb). # # Abbreviations: # yr year # mon month # min minute # m daily/monthly median concentration (or hourly value) # sd standard deviation # n number of samples # brw Barrow, Alaska # nwr Niwot Ridge, Colorado # mlo Mauna Loa, Hawaii # smo Cape Matatula, American Samoa # spo South Pole, Antarctica # nan not-a-number (missing data) # # year, mon, concentration in ppb, std. dev, number of samples # N2OritsSMOyr N2OritsSMOmon N2OritsSMOm N2OritsSMOsd N2OritsSMOn 1987 6 305.917 0.937 22 1987 7 305.602 0.884 112 1987 8 305.908 0.844 6 1987 9 305.843 0.897 165 1987 10 305.788 0.841 228 1987 11 306.169 0.757 177 1987 12 306.138 0.728 174 1988 1 306.329 0.780 133 1988 2 306.625 0.592 84 1988 3 306.258 0.730 161 1988 4 306.472 0.816 126 1988 5 306.032 0.844 187 1988 6 305.952 0.886 206 1988 7 306.054 0.892 199 1988 8 306.072 0.988 242 1988 9 305.914 0.956 232 1988 10 306.528 1.005 211 1988 11 307.044 0.910 149 1988 12 307.180 0.724 144 1989 1 307.308 0.841 154 1989 2 307.501 0.808 191 1989 3 307.411 0.841 187 1989 4 307.296 0.775 252 1989 5 307.422 0.883 303 1989 6 307.155 0.694 305 1989 7 307.258 0.862 346 1989 8 307.301 0.724 322 1989 9 307.486 0.819 336 1989 10 307.733 0.833 349 1989 11 307.827 0.896 317 1989 12 308.491 0.857 169 1990 1 308.255 0.912 348 1990 2 308.246 0.823 267 1990 3 308.407 0.914 265 1990 4 308.159 0.936 354 1990 5 308.128 0.792 676 1990 6 308.293 0.791 701 1990 7 308.248 0.837 557 1990 8 308.418 1.053 450 1990 9 308.648 0.806 555 1990 10 308.592 0.732 569 1990 11 308.916 0.637 267 1990 12 308.974 0.886 325 1991 1 309.238 0.623 338 1991 2 309.400 0.623 171 1991 3 309.220 0.659 526 1991 4 309.095 0.636 357 1991 5 309.091 0.750 492 1991 6 309.067 1.107 665 1991 7 308.786 0.929 714 1991 8 308.816 0.917 493 1991 9 308.971 0.762 591 1991 10 309.158 0.716 712 1991 11 309.184 0.790 620 1991 12 309.197 0.763 270 1992 1 nan nan 0 1992 2 309.830 2.177 429 1992 3 309.626 0.679 722 1992 4 309.470 0.792 337 1992 5 309.250 0.920 207 1992 6 309.221 0.739 672 1992 7 309.392 0.651 741 1992 8 309.656 0.644 648 1992 9 309.626 0.603 716 1992 10 309.596 0.655 744 1992 11 309.539 0.725 718 1992 12 309.961 0.861 704 1993 1 309.882 0.991 708 1993 2 309.882 0.978 670 1993 3 310.332 0.859 742 1993 4 310.073 0.939 701 1993 5 309.260 0.994 554 1993 6 309.508 0.895 600 1993 7 309.499 0.840 501 1993 8 309.854 0.909 682 1993 9 309.789 0.994 369 1993 10 309.596 0.982 554 1993 11 309.812 1.039 524 1993 12 310.043 1.199 624 1994 1 310.087 1.034 586 1994 2 310.193 0.941 497 1994 3 310.431 1.059 688 1994 4 310.643 1.078 682 1994 5 310.645 1.163 689 1994 6 310.850 1.018 706 1994 7 310.839 1.197 639 1994 8 310.277 1.586 402 1994 9 310.813 1.111 493 1994 10 311.213 1.542 691 1994 11 311.379 2.111 681 1994 12 312.418 2.436 676 1995 1 312.035 2.718 603 1995 2 311.394 2.557 564 1995 3 310.810 1.966 548 1995 4 310.693 1.853 536 1995 5 310.547 1.794 271 1995 6 310.259 1.229 582 1995 7 310.092 0.675 629 1995 8 309.959 0.709 532 1995 9 310.205 1.010 669 1995 10 310.220 1.093 628 1995 11 310.529 1.004 669 1995 12 310.920 1.059 583 1996 1 312.301 1.129 637 1996 2 311.044 1.151 640 1996 3 311.031 1.409 695 1996 4 310.577 1.436 496 1996 5 310.616 1.351 693 1996 6 310.700 1.260 594 1996 7 310.911 1.010 520 1996 8 310.719 1.591 645 1996 9 311.094 1.528 626 1996 10 310.821 1.554 464 1996 11 311.532 1.285 659 1996 12 311.616 1.520 705 1997 1 311.830 1.838 679 1997 2 311.861 1.551 538 1997 3 312.029 1.176 659 1997 4 311.813 1.119 485 1997 5 311.612 1.131 619 1997 6 311.478 1.307 667 1997 7 311.769 1.126 536 1997 8 311.724 1.031 692 1997 9 311.877 1.307 555 1997 10 312.156 1.159 411 1997 11 312.207 0.947 522 1997 12 311.941 0.900 99 1998 1 312.558 1.475 482 1998 2 312.293 1.179 582 1998 3 312.346 1.301 641 1998 4 312.193 1.374 500 1998 5 312.256 1.209 525 1998 6 312.374 0.870 525 1998 7 312.040 2.384 68 1998 8 312.347 2.730 309 1998 9 312.721 1.002 669 1998 10 312.714 0.683 724 1998 11 313.313 0.796 691 1998 12 314.139 1.403 666 1999 1 314.678 1.355 618 1999 2 314.170 1.622 512 1999 3 313.705 1.411 717 1999 4 313.817 1.266 623 1999 5 313.507 1.424 637 1999 6 313.920 1.721 645 1999 7 314.039 1.377 523 1999 8 313.954 1.317 547 1999 9 314.157 1.555 619 1999 10 314.526 1.852 687 1999 11 315.026 1.661 623 1999 12 315.141 1.416 591 2000 1 315.482 1.830 544 2000 2 315.516 2.306 579 2000 3 315.412 2.802 553 2000 4 315.041 2.564 532 2000 5 315.317 2.975 588