# file: brw_N2O_MM.dat # # 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/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 # N2OritsBRWyr N2OritsBRWmon N2OritsBRWm N2OritsBRWsd N2OritsBRWn 1987 8 306.438 1.724 189 1987 9 306.481 1.657 204 1987 10 307.717 1.330 241 1987 11 307.945 1.700 187 1987 12 307.660 1.727 232 1988 1 308.209 1.999 228 1988 2 308.366 1.836 205 1988 3 308.294 1.314 238 1988 4 308.408 1.153 238 1988 5 308.169 1.081 190 1988 6 308.183 1.114 204 1988 7 308.062 0.978 124 1988 8 307.432 0.909 238 1988 9 307.723 0.823 235 1988 10 308.131 0.752 201 1988 11 308.364 0.784 221 1988 12 308.716 0.988 195 1989 1 309.153 0.834 214 1989 2 309.122 0.846 168 1989 3 309.264 0.684 244 1989 4 309.309 0.654 159 1989 5 309.302 0.730 233 1989 6 309.130 0.688 230 1989 7 309.054 0.890 247 1989 8 308.849 1.043 141 1989 9 308.907 0.576 79 1989 10 309.175 0.719 257 1989 11 309.421 0.748 334 1989 12 309.680 0.738 229 1990 1 310.086 0.815 362 1990 2 310.380 0.854 288 1990 3 310.537 0.881 284 1990 4 310.168 0.881 343 1990 5 309.986 0.782 674 1990 6 309.649 1.674 540 1990 7 309.430 1.561 518 1990 8 309.363 1.121 519 1990 9 309.442 0.748 671 1990 10 309.872 0.753 733 1990 11 310.287 0.745 592 1990 12 310.749 0.725 707 1991 1 311.108 0.773 499 1991 2 311.116 0.878 563 1991 3 310.987 0.999 588 1991 4 311.033 0.833 568 1991 5 310.800 0.621 145 1991 6 310.534 0.794 221 1991 7 310.643 0.780 573 1991 8 310.098 0.725 573 1991 9 310.057 0.532 488 1991 10 310.601 0.635 508 1991 11 310.839 0.524 469 1991 12 311.263 0.498 510 1992 1 311.353 0.570 464 1992 2 311.426 0.543 565 1992 3 311.489 0.613 387 1992 4 311.486 0.514 592 1992 5 311.245 0.458 704 1992 6 310.857 0.481 671 1992 7 310.589 0.737 622 1992 8 310.404 0.549 725 1992 9 310.364 0.541 659 1992 10 310.693 0.464 646 1992 11 310.845 0.502 623 1992 12 310.599 0.544 554 1993 1 311.326 0.477 551 1993 2 311.838 0.528 562 1993 3 311.827 0.445 662 1993 4 311.608 0.447 645 1993 5 311.536 0.466 669 1993 6 311.114 0.558 664 1993 7 310.833 0.597 671 1993 8 311.438 0.583 688 1993 9 311.628 0.521 685 1993 10 311.896 0.529 642 1993 11 312.026 0.701 619 1993 12 312.184 0.878 641 1994 1 312.419 0.896 678 1994 2 312.347 0.824 645 1994 3 312.656 0.713 544 1994 4 313.058 0.644 24 1994 5 313.014 0.856 689 1994 6 312.225 0.840 604 1994 7 311.474 3.755 687 1994 8 311.392 5.252 709 1994 9 310.981 4.140 608 1994 10 310.867 4.924 566 1994 11 311.176 8.070 671 1994 12 311.312 11.685 546 1995 1 311.373 5.475 646 1995 2 311.201 1.055 659 1995 3 311.319 1.261 619 1995 4 nan nan 0 1995 5 nan nan 0 1995 6 311.770 0.946 321 1995 7 311.881 0.814 692 1995 8 311.472 0.876 665 1995 9 311.331 0.818 656 1995 10 311.454 0.830 739 1995 11 311.774 0.801 596 1995 12 312.009 0.879 598 1996 1 312.220 1.175 665 1996 2 312.542 4.010 322 1996 3 313.086 1.018 710 1996 4 313.079 0.838 695 1996 5 313.090 0.802 640 1996 6 312.726 0.892 615 1996 7 312.439 0.809 686 1996 8 311.868 0.796 654 1996 9 311.713 1.201 635 1996 10 311.806 1.111 645 1996 11 312.426 0.998 667 1996 12 312.866 1.192 568 1997 1 313.442 1.142 673 1997 2 313.297 1.052 609 1997 3 313.290 1.170 623 1997 4 312.001 1.424 278 1997 5 311.851 1.837 735 1997 6 312.574 1.917 681 1997 7 312.493 1.273 694 1997 8 312.438 0.875 674 1997 9 313.273 1.248 603 1997 10 313.731 0.753 736 1997 11 313.720 0.761 414 1997 12 nan nan 0 1998 1 314.105 0.894 190 1998 2 314.125 1.064 664 1998 3 314.008 1.019 738 1998 4 313.086 0.993 708 1998 5 314.269 0.866 711 1998 6 314.394 1.015 619 1998 7 314.248 1.124 707 1998 8 314.074 0.822 730 1998 9 314.043 0.780 703 1998 10 314.486 0.725 705 1998 11 314.582 0.602 552 1998 12 314.918 0.661 689 1999 1 315.248 0.620 699 1999 2 315.187 0.682 401