File: H2402_(GCMS)_1998.dat Mean, dry, mole fractions of atmospheric levels of Halon- 2402 (dibromtetrafluoroethane) at remote stations in the NOAA/CMDL Flask Program. Values given are means of flask pairs as measured by gas chromatography with mass spectrometric detection (GCMS). Flasks are routinely collected at these remote sites through a cooperative effort between NOAA/CMDL, University of Colorado, Atmospheric Environment Service (AES), Commonwealth Scientific and Industrial Research Organization (CSIRO), and Cape Grim Baseline Air Pollution Station (CGBAPS). Personnel: James H. Butler, Stephen A. Montzka, James W. Elkins National Oceanic and Atmospheric Administration (NOAA) Climate Monitoring and Diagnostics Laboratory (CMDL) 325 Broadway, Mail Stop R/E/CG1 Boulder, CO 80303 U.S.A. Internet e-mail address: jbutler@cmdl.noaa.gov; smontzka@cmdl.noaa.gov; jelkins@cmdl.noaa.gov; Phone: jhb: (303) 497-6898 sam: (303) 497-6657; jwe: (303) 497-6224 FAX: (303) 497-6290 A. D. Clarke Cooperative Institute for Research in the Environmental Sciences (CIRES); University of Colorado Boulder, C0 80309 U.S.A. Internet e-mail address: aclarke@cmdl.noaa.gov; Phone: (303) 497-6013 FAX: (303) 497-6290 Daniel J. Endres National Oceanic and Atmospheric Administration (NOAA) NOAA/CMDL--Point Barrow Observatory Pouch 8888 Barrow, AK 99723 U.S.A. Phone: (907) 852-6500 FAX: (907) 852-4622 Alan M. Yoshinaga, Russell C. Schnell National Oceanic and Atmospheric Administration (NOAA) NOAA/CMDL Mauna Loa Observatory P.O. Box 275 Hilo, HI 96720 U.S.A. Phone: (808) 961-3788 FAX: (808) 961-3789 National Oceanic and Atmospheric Administration (NOAA) NOAA/CMDL Samoa Observatory Pago Pago, American Samoa 96799 U.S.A. Phone: 011 (684) 622-7455 FAX: 011 (684) 699-4440 National Oceanic and Atmospheric Administration (NOAA) c/o NOAA/CMDL South Pole Observatory (Relayed messages through CMDL Boulder) 325 Broadway Boulder, CO 80303 U.S.A. Phone: (303) 497-6733 FAX: (303) 497-6290 Internet e-mail address: tjacobs@cmdl.noaa.gov Mark V. Losleben University of Colorado Mountain Research Station (MRS) 818 County Rd 116 Nederland, CO 80466 U.S.A. Phone: (303) 492-8841 FAX: (303) 492-6388 Internet e-mail address: losleben_m@cubldr.colorado.edu Neil B. A. Trivett, Doug E. J. Worthy, Victoria Hudec, and Valerie Chorney Atmospheric Environment Service (AES) 4605 Dufferin Street Downsview, Ontario M3H 5T4, Canada Phone: (416) 739-4462 FAX: (416) 739-4664 Internet e-mail address: arqmgen@cid.aes.doe.ca Paul J. Fraser Division of Atmospheric Research (DAR) Commonwealth Scientific and Industrial Research Organization (CSIRO) Private Bag No. 1, Mordialloc Victoria 3195, Australia Phone: 011 (613) 586-7666 FAX: 011 (613) 586-7600 Internet e-mail address: pjf@atmos.dar.csiro.au Laurence W. Porter Cape Grim Baseline Air Pollution Station (CGBAPS) P.O. Box 346 Smithton, Tasmania 7330, Australia Phone: 011 61 04 521629 FAX: 011 61 04 522600 Internet e-mail address: /G=GRIM/S=BAPS/O=MET.BUREAU/@telememo.au ******************************************************** If you use these data in a publication or report, NOAA and CDIAC policy require that you contact the principal investigators first and discuss your interests. By including these data here in electronic form, we are trying to encourage scientific interaction. Furthermore, if you use the data in any presentation or publication, you must give credit to the National Oceanic and Atmospheric Administration (NOAA)/Climate Monitoring and Diagnostics Laboratory (CMDL) in Boulder, CO as a source of the data. Measurements of Halons from the NOAA CMDL Flask Sampling Network have appeared in the following articles: Butler, J.H., J. W. Elkins, B. D. Hall, S. O. Cummings, S. A. Montzka. 1992. A decrease in the growth rates of atmospheric halon concentrations. Nature 359:403-405. Butler, J.H., J.W. Elkins, B.D. Hall, S.A. Montzka, S.O. Cummings, P.J. Fraser, and L.W. Porter. 1994. Recent trends in the global atmospheric mixing ratios of Halon-1301 and Halon-1211. In Baseline Atmospheric Program Australia, 1991, edited by J. L. G. S.R. Wilson. Melbourne, Australia: Commonwealth Scientific and Industrial Research Organization. Montzka, S.A., J. H. Butler, R. C. Myers, T. M. Thompson, T. H. Swanson, A. D. Clarke, L. T. Lock, and J. W. Elkins. 1996. Decline in the tropospheric abundance of halogen from halocarbons: Implications for stratospheric ozone depletion. Science 272:1318-1322. | Butler, J. H., S. A. Montzka, A.D. Clarke, Jurgen M. Lobert, and J.W. Elkins. 1998. Growth and distribution of halons in the atmosphere. Journal of Geophysical Research 103(D1): 1503-1511. ******************************************************** NOAA/CMDL Halocarbon Flask Network, ppt=parts per trillion by mole fraction (pmol/mol) for flask pair or individual flask ALT=Alert, North West Territories, Canada (82.5N, 62.3W) (Atmospheric Environment Service Site); BRW=Pt. Barrow, Alaska, USA (71.3N, 156.6W); NWR= Niwot Ridge, Colorado, USA (40.052N, 105.585W) (University of Colorado site); MLO=Mauna Loa, Hawaii, USA (19.5N, 155.6W); SMO=Cape Matatula, American Samoa (14.3S, 170.6W); CGO=Cape Grim, Tasmania, Australia (40.7S, 144.8E) (CSIRO/Australia site); SPO=South Pole (90S); Principal Investigators: Stephen A. Montzka NOAA/CMDL (303) 497-6657 or James H. Butler NOAA/CMDL (303) 497-6898 or James W. Elkins NOAA/CMDL (303) 497-6224. Internet E-mail address: smontzka@cmdl.noaa.gov, jbutler@cmdl.noaa.gov, jelkins@cmdl.noaa.gov This file was most recently updated on 15 January 1998. H2402 Measurements by GCMS from flasks collected at NOAA/CMDL Observatories and Cooperating Sites Green = NWR Archive Cylinders Year Year H2402 s.d. ALERT 1995.126 95.126 0.504 0.004 ALERT 1995.282 95.282 0.522 0.001 ALERT 1995.356 95.356 0.519 0.006 ALERT 1995.627 95.627 0.511 0.020 ALERT 1995.655 95.655 0.497 0.005 ALERT 1995.666 95.666 0.501 0.010 ALERT 1995.858 95.858 0.526 0.006 ALERT 1995.934 95.934 0.520 0.004 ALERT 1996.068 96.068 0.523 0.006 ALERT 1996.126 96.126 0.504 0.004 ALERT 1996.189 96.189 0.505 0.026 ALERT 1996.260 96.260 0.493 0.003 ALERT 1996.352 96.352 0.513 0.000 ALERT 1996.432 96.432 0.514 0.009 ALERT 1996.470 96.470 0.509 0.016 ALERT 1996.527 96.527 0.511 0.003 ALERT 1996.642 96.642 0.503 0.004 ALERT 1996.661 96.661 0.504 0.004 BARROW 1995.151 95.151 0.533 0.003 BARROW 1995.227 95.227 0.512 0.006 BARROW 1995.299 95.299 0.530 0.008 BARROW 1995.334 95.334 0.497 0.003 BARROW 1995.373 95.373 0.509 0.017 BARROW 1995.436 95.436 0.515 0.000 BARROW 1995.474 95.474 0.502 0.011 BARROW 1995.512 95.512 0.482 0.015 BARROW 1995.592 95.592 0.499 0.009 BARROW 1995.630 95.630 0.491 0.004 BARROW 1995.668 95.668 0.506 0.000 BARROW 1995.718 95.718 0.499 0.008 BARROW 1995.819 95.819 0.507 0.009 BARROW 1995.926 95.926 0.524 0.007 BARROW 1996.016 96.016 0.532 0.012 BARROW 1996.087 96.087 0.521 0.009 BARROW 1996.156 96.156 0.509 0.007 BARROW 1996.186 96.186 0.519 0.004 BARROW 1996.262 96.262 0.503 0.000 BARROW 1996.292 96.292 0.504 0.011 BARROW 1996.339 96.339 0.506 0.002 BARROW 1996.377 96.377 0.511 0.018 BARROW 1996.443 96.443 0.509 0.004 BARROW 1996.492 96.492 0.487 0.004 BARROW 1996.522 96.522 0.482 0.012 BARROW 1996.568 96.568 0.505 0.005 BARROW 1996.658 96.658 0.501 0.008 BARROW 1996.705 96.705 0.499 0.006 BARROW 1996.740 96.740 0.522 0.002 BARROW 1996.779 96.779 0.510 0.003 CAPE_GRIM 1995.107 95.107 0.451 0.007 CAPE_GRIM 1995.184 95.184 0.446 0.006 CAPE_GRIM 1995.233 95.233 0.450 0.002 CAPE_GRIM 1995.340 95.340 0.455 0.010 CAPE_GRIM 1995.397 95.397 0.457 0.003 CAPE_GRIM 1995.447 95.447 0.442 0.012 CAPE_GRIM 1995.532 95.532 0.440 0.006 CAPE_GRIM 1995.584 95.584 0.453 0.001 CAPE_GRIM 1995.625 95.625 0.452 0.013 CAPE_GRIM 1995.775 95.775 0.459 0.002 CAPE_GRIM 1995.838 95.838 0.460 0.004 CAPE_GRIM 1995.871 95.871 0.456 0.001 CAPE_GRIM 1996.038 96.038 0.461 0.007 CAPE_GRIM 1996.156 96.156 0.462 0.022 CAPE_GRIM 1996.183 96.183 0.462 0.000 CAPE_GRIM 1996.249 96.249 0.464 0.004 CAPE_GRIM 1996.347 96.347 0.452 0.004 CAPE_GRIM 1996.404 96.404 0.461 0.013 CAPE_GRIM 1996.429 96.429 0.459 0.002 CAPE_GRIM 1996.560 96.560 0.466 0.004 CAPE_GRIM 1996.593 96.593 0.469 0.017 CAPE_GRIM 1996.601 96.601 0.467 0.007 CAPE_GRIM 1996.716 96.716 0.467 0.007 CAPE_GRIM 1996.735 96.735 0.480 0.005 KUMUKAHI 1995.907 95.907 0.492 0.006 KUMUKAHI 1995.942 95.942 0.478 0.018 KUMUKAHI 1996.046 96.046 0.497 0.014 KUMUKAHI 1996.079 96.079 0.480 0.017 KUMUKAHI 1996.117 96.117 0.486 0.023 KUMUKAHI 1996.213 96.213 0.479 0.003 KUMUKAHI 1996.232 96.232 0.497 0.009 KUMUKAHI 1996.251 96.251 0.471 0.006 KUMUKAHI 1996.290 96.290 0.479 0.004 KUMUKAHI 1996.347 96.347 0.474 0.014 KUMUKAHI 1996.366 96.366 0.475 0.011 KUMUKAHI 1996.443 96.443 0.483 0.004 KUMUKAHI 1996.462 96.462 0.495 0.003 KUMUKAHI 1996.478 96.478 0.486 0.001 KUMUKAHI 1996.516 96.516 0.490 0.018 KUMUKAHI 1996.538 96.538 0.505 0.002 KUMUKAHI 1996.593 96.593 0.490 0.027 KUMUKAHI 1996.634 96.634 0.485 0.001 KUMUKAHI 1996.689 96.689 0.501 0.000 KUMUKAHI 1996.727 96.727 0.491 0.002 KUMUKAHI 1996.749 96.749 0.492 0.001 MAUNA_LOA 1995.195 95.195 0.465 0.003 MAUNA_LOA 1995.214 95.214 0.468 0.020 MAUNA_LOA 1995.274 95.274 0.466 0.000 MAUNA_LOA 1995.310 95.310 0.485 0.015 MAUNA_LOA 1995.348 95.348 0.480 0.004 MAUNA_LOA 1995.414 95.414 0.490 0.016 MAUNA_LOA 1995.444 95.444 0.472 0.001 MAUNA_LOA 1995.482 95.482 0.478 0.002 MAUNA_LOA 1995.540 95.540 0.477 0.006 MAUNA_LOA 1995.559 95.559 0.482 0.014 MAUNA_LOA 1995.597 95.597 0.469 0.031 MAUNA_LOA 1995.616 95.616 0.473 0.013 MAUNA_LOA 1995.636 95.636 0.478 0.021 MAUNA_LOA 1995.732 95.732 0.465 0.003 MAUNA_LOA 1995.808 95.808 0.486 0.003 MAUNA_LOA 1995.885 95.885 0.477 0.001 MAUNA_LOA 1995.962 95.962 0.473 0.005 MAUNA_LOA 1996.115 96.115 0.469 0.007 MAUNA_LOA 1996.219 96.219 0.476 0.004 MAUNA_LOA 1996.238 96.238 0.472 0.003 MAUNA_LOA 1996.410 96.410 0.481 0.001 MAUNA_LOA 1996.421 96.421 0.492 0.005 MAUNA_LOA 1996.516 96.516 0.483 0.006 MAUNA_LOA 1996.555 96.555 0.481 0.000 MAUNA_LOA 1996.612 96.612 0.485 0.006 MAUNA_LOA 1996.678 96.678 0.492 0.003 MAUNA_LOA 1996.765 96.765 0.484 0.001 NIWOT 1987.036 87.036 0.320 -9.000 NIWOT 1988.628 88.628 0.330 -9.000 NIWOT 1988.760 88.760 0.420 -9.000 NIWOT 1988.817 88.817 0.320 -9.000 NIWOT 1988.891 88.891 0.360 -9.000 NIWOT 1988.891 88.891 0.370 -9.000 NIWOT 1989.989 89.989 0.390 -9.000 NIWOT 1990.384 90.384 0.390 -9.000 NIWOT 1991.778 91.778 0.430 -9.000 NIWOT 1992.385 92.385 0.440 -9.000 NIWOT 1992.975 92.975 0.450 -9.000 NIWOT 1992.975 92.975 0.410 -9.000 NIWOT 1993.860 93.860 0.480 -9.000 NIWOT 1994.241 94.241 0.440 -9.000 NIWOT 1995.121 95.121 0.487 0.012 NIWOT 1995.255 95.255 0.482 0.006 NIWOT 1995.293 95.293 0.488 0.004 NIWOT 1995.351 95.351 0.472 0.015 NIWOT 1995.427 95.427 0.489 0.011 NIWOT 1995.562 95.562 0.485 0.004 NIWOT 1995.619 95.619 0.482 0.012 NIWOT 1995.696 95.696 0.496 0.007 NIWOT 1995.773 95.773 0.496 0.005 NIWOT 1995.868 95.868 0.486 0.003 NIWOT 1996.022 96.022 0.490 0.005 NIWOT 1996.098 96.098 0.485 0.004 NIWOT 1996.137 96.137 0.493 0.003 NIWOT 1996.270 96.270 0.492 0.010 NIWOT 1996.347 96.347 0.484 0.001 NIWOT 1996.423 96.423 0.495 0.030 NIWOT 1996.462 96.462 0.481 0.011 NIWOT 1996.519 96.519 0.504 0.000 NIWOT 1996.557 96.557 0.477 0.012 NIWOT 1996.596 96.596 0.509 0.020 NIWOT 1996.615 96.615 0.483 0.002 NIWOT 1996.672 96.672 0.507 0.006 NIWOT 1996.730 96.730 0.506 0.017 NIWOT 1996.787 96.787 0.497 0.004 SAMOA 1995.118 95.118 0.466 0.000 SAMOA 1995.293 95.293 0.455 0.003 SAMOA 1995.389 95.389 0.457 0.006 SAMOA 1995.619 95.619 0.456 0.002 SAMOA 1995.740 95.740 0.465 0.001 SAMOA 1995.773 95.773 0.457 0.006 SAMOA 1995.852 95.852 0.466 0.002 SAMOA 1995.984 95.984 0.477 0.004 SAMOA 1996.063 96.063 0.467 0.003 SAMOA 1996.230 96.230 0.461 0.011 SAMOA 1996.249 96.249 0.470 0.002 SAMOA 1996.268 96.268 0.463 0.011 SAMOA 1996.369 96.369 0.458 0.010 SAMOA 1996.404 96.404 0.479 0.005 SAMOA 1996.421 96.421 0.461 0.013 SAMOA 1996.440 96.440 0.484 0.010 SAMOA 1996.519 96.519 0.456 0.015 SAMOA 1996.596 96.596 0.474 0.013 SAMOA 1996.653 96.653 0.471 0.011 SAMOA 1996.672 96.672 0.471 0.004 SAMOA 1996.691 96.691 0.464 0.003 SAMOA 1996.754 96.754 0.464 0.005 SOUTH_POLE 1995.795 95.795 0.448 0.007