# file: spo_N2O_MM.dat # # Nitrous Oxide (N2O) data from hourly in situ samples analyzed on # a gas chromatograph located at South Pole (SPO) station Antarctica # (89.98 S, 24.80 W, elevation: 2810 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 # N2OritsSPOyr N2OritsSPOmon N2OritsSPOm N2OritsSPOsd N2OritsSPOn 1988 2 306.414 2.262 67 1988 3 305.536 1.362 219 1988 4 305.234 0.854 93 1988 5 nan nan 0 1988 6 nan nan 0 1988 7 305.584 3.463 201 1988 8 306.728 2.330 56 1988 9 nan nan 0 1988 10 nan nan 0 1988 11 nan nan 0 1988 12 nan nan 0 1989 1 306.656 1.763 69 1989 2 307.193 0.535 36 1989 3 306.913 0.638 264 1989 4 306.879 0.647 322 1989 5 307.276 1.445 168 1989 6 307.464 0.736 296 1989 7 307.500 0.674 139 1989 8 307.853 0.566 109 1989 9 307.780 0.596 33 1989 10 308.093 0.609 143 1989 11 308.305 1.174 285 1989 12 307.940 1.302 218 1990 1 307.803 1.138 62 1990 2 307.986 1.063 254 1990 3 308.056 1.330 527 1990 4 308.009 0.772 243 1990 5 307.890 0.797 53 1990 6 308.064 0.869 409 1990 7 307.945 1.055 578 1990 8 308.449 1.673 725 1990 9 308.073 4.688 659 1990 10 308.402 8.930 513 1990 11 308.121 6.498 644 1990 12 308.374 2.294 207 1991 1 309.195 1.988 397 1991 2 309.448 2.811 487 1991 3 309.550 3.265 525 1991 4 307.452 5.645 66 1991 5 309.166 1.496 441 1991 6 309.105 1.345 627 1991 7 309.296 1.544 594 1991 8 309.727 1.257 566 1991 9 310.378 1.087 679 1991 10 309.834 0.927 517 1991 11 309.979 0.948 213 1991 12 309.812 1.023 62 1992 1 309.862 0.763 299 1992 2 309.789 0.679 540 1992 3 309.635 0.682 506 1992 4 309.752 0.832 387 1992 5 310.083 1.006 188 1992 6 309.774 0.675 639 1992 7 309.823 0.685 393 1992 8 309.900 0.718 681 1992 9 309.975 0.707 523 1992 10 310.115 0.762 594 1992 11 310.049 0.702 151 1992 12 310.075 0.749 36 1993 1 310.618 1.204 462 1993 2 311.177 0.751 615 1993 3 310.887 0.708 620 1993 4 310.550 0.763 685 1993 5 310.727 0.736 715 1993 6 310.635 0.739 672 1993 7 310.975 0.725 718 1993 8 311.060 0.815 693 1993 9 311.244 1.037 664 1993 10 311.236 1.034 432 1993 11 311.283 0.988 453 1993 12 311.306 1.037 680 1994 1 310.358 0.967 267 1994 2 310.364 0.795 491 1994 3 310.279 0.727 389 1994 4 310.285 0.661 606 1994 5 310.279 0.776 694 1994 6 310.554 0.615 628 1994 7 310.607 0.618 503 1994 8 311.060 0.651 724 1994 9 311.168 0.638 633 1994 10 311.129 0.657 522 1994 11 311.106 0.621 713 1994 12 310.908 0.744 707 1995 1 311.178 2.203 528 1995 2 311.079 0.590 631 1995 3 311.036 0.589 494 1995 4 310.925 0.563 696 1995 5 310.837 0.539 680 1995 6 310.946 0.473 704 1995 7 311.075 0.512 690 1995 8 311.203 0.486 723 1995 9 311.422 0.500 705 1995 10 311.502 0.575 639 1995 11 311.438 0.489 687 1995 12 311.354 0.583 703 1996 1 311.428 0.516 582 1996 2 311.519 0.584 685 1996 3 311.459 0.538 732 1996 4 311.275 0.516 711 1996 5 311.369 0.486 733 1996 6 311.307 0.535 675 1996 7 311.439 0.525 738 1996 8 311.571 0.518 737 1996 9 311.719 0.552 696 1996 10 311.943 1.008 727 1996 11 311.915 0.558 691 1996 12 311.660 0.527 730 1997 1 311.510 0.700 552 1997 2 311.951 1.751 605 1997 3 311.889 1.350 732 1997 4 311.692 2.689 670 1997 5 311.576 3.929 695 1997 6 311.491 3.187 669 1997 7 312.143 2.663 730 1997 8 311.822 1.946 713 1997 9 311.978 1.685 635 1997 10 312.038 1.565 512 1997 11 311.504 1.538 634 1997 12 311.438 2.292 690 1998 1 310.858 3.785 631 1998 2 311.696 3.537 572 1998 3 311.905 2.836 732 1998 4 312.284 2.376 712 1998 5 312.270 2.353 731 1998 6 312.224 2.384 711 1998 7 312.470 1.670 712 1998 8 312.559 1.743 667 1998 9 312.647 1.564 712 1998 10 312.911 1.249 639 1998 11 312.771 2.278 593 1998 12 311.937 2.567 680 1999 1 312.213 2.358 669 1999 2 312.600 2.656 611 1999 3 312.885 2.388 704 1999 4 312.684 3.182 611 1999 5 312.344 1.852 697 1999 6 312.353 1.643 710 1999 7 313.106 2.233 718 1999 8 313.094 2.467 700 1999 9 313.257 2.131 690 1999 10 313.220 2.244 730 1999 11 313.282 1.994 691 1999 12 313.353 2.266 738 2000 1 313.163 2.088 735 2000 2 313.280 3.144 645 2000 3 313.241 2.560 726 2000 4 314.255 2.937 679 2000 5 313.663 5.878 733 2000 6 314.017 2.290 710 2000 7 314.256 3.093 720 2000 8 314.463 3.369 619 2000 9 314.402 2.857 709 2000 10 314.684 2.307 733 2000 11 314.512 1.780 663