# file: smo_F11_MM.dat # # Chlorofluorocarbon-11 (F11) 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: # Chlorofluorocarbon-11 data from the NOAA/ESRL halocarbons in situ program. # # Calibration scale used: NOAA 2016 # # 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-trillion (ppt). # # 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 ppt, std. dev, number of samples # F11ritsSMOyr F11ritsSMOmon F11ritsSMOm F11ritsSMOsd F11ritsSMOn 1989 4 243.000 1.561 317 1989 5 243.788 1.649 304 1989 6 242.764 1.420 322 1989 7 243.429 1.325 349 1989 8 244.134 1.235 322 1989 9 245.058 1.214 338 1989 10 246.520 1.573 365 1989 11 247.093 1.991 352 1989 12 247.817 2.788 204 1990 1 250.089 1.519 359 1990 2 250.661 2.263 265 1990 3 252.004 2.208 278 1990 4 252.176 1.576 356 1990 5 252.262 0.987 690 1990 6 253.292 1.082 716 1990 7 253.439 1.153 555 1990 8 254.501 1.511 579 1990 9 256.019 1.587 628 1990 10 256.044 1.386 631 1990 11 257.374 1.629 264 1990 12 257.844 2.317 675 1991 1 259.084 1.516 355 1991 2 261.087 2.307 190 1991 3 260.099 1.662 684 1991 4 258.365 1.557 390 1991 5 258.416 1.580 614 1991 6 257.890 1.450 667 1991 7 258.261 1.620 670 1991 8 258.516 1.751 497 1991 9 258.673 1.335 602 1991 10 259.254 1.346 715 1991 11 260.109 1.387 675 1991 12 260.079 1.550 271 1992 1 260.490 1.349 303 1992 2 262.893 2.298 505 1992 3 262.649 1.767 722 1992 4 262.776 1.936 643 1992 5 262.768 1.751 736 1992 6 262.740 1.701 675 1992 7 263.364 1.655 741 1992 8 264.041 1.693 642 1992 9 264.104 1.627 717 1992 10 264.480 1.624 744 1992 11 263.848 1.597 717 1992 12 265.086 1.765 702 1993 1 265.007 1.664 706 1993 2 264.803 1.787 666 1993 3 265.678 1.561 742 1993 4 265.196 1.468 708 1993 5 264.057 1.830 550 1993 6 264.850 1.572 598 1993 7 264.580 1.421 743 1993 8 265.564 1.694 678 1993 9 265.417 1.753 316 1993 10 264.049 0.963 132 1993 11 264.418 1.114 528 1993 12 265.255 1.313 628 1994 1 265.341 1.311 588 1994 2 265.832 1.217 498 1994 3 265.480 1.240 693 1994 4 265.444 1.341 679 1994 5 264.907 1.155 691 1994 6 264.553 1.271 709 1994 7 264.793 1.053 648 1994 8 264.278 1.126 570 1994 9 265.066 1.271 659 1994 10 265.701 1.232 692 1994 11 265.151 1.338 666 1994 12 265.700 1.207 667 1995 1 264.799 1.271 592 1995 2 265.954 1.280 546 1995 3 265.550 1.424 380 1995 4 265.538 1.375 422 1995 5 265.925 1.824 121 1995 6 264.804 1.807 527 1995 7 264.859 1.665 510 1995 8 264.510 1.442 328 1995 9 264.999 1.732 615 1995 10 264.811 1.805 559 1995 11 265.048 2.010 668 1995 12 264.880 1.908 581 1996 1 266.114 2.116 638 1996 2 265.542 2.095 638 1996 3 265.494 2.439 696 1996 4 264.556 2.091 555 1996 5 264.538 1.616 606 1996 6 264.626 1.323 597 1996 7 264.212 1.229 494 1996 8 264.108 1.258 674 1996 9 263.964 1.203 626 1996 10 263.935 1.193 579 1996 11 264.310 1.138 659 1996 12 264.295 1.236 705 1997 1 264.345 1.358 677 1997 2 264.034 1.160 536 1997 3 264.489 1.175 658 1997 4 264.138 1.195 487 1997 5 263.485 1.282 635 1997 6 263.165 1.284 674 1997 7 263.603 1.318 545 1997 8 263.244 1.283 685 1997 9 263.213 1.253 545 1997 10 262.990 1.277 412 1997 11 262.841 1.170 520 1997 12 262.615 1.217 100 1998 1 263.846 1.271 318 1998 2 262.710 1.161 555 1998 3 262.573 1.141 595 1998 4 261.882 1.016 674 1998 5 261.872 0.994 672 1998 6 261.947 1.100 633 1998 7 261.586 1.110 631 1998 8 261.658 1.352 616 1998 9 261.560 1.360 692 1998 10 261.530 1.415 726 1998 11 261.884 3.046 511 1998 12 262.109 2.122 613 1999 1 261.057 1.755 94 1999 2 261.783 1.949 274 1999 3 261.141 1.431 721 1999 4 260.964 1.417 627 1999 5 260.512 1.450 638 1999 6 260.402 1.201 647 1999 7 260.671 1.078 531 1999 8 260.864 1.026 545 1999 9 260.409 1.195 619 1999 10 260.183 1.173 660 1999 11 260.350 1.134 651 1999 12 260.556 1.105 495 2000 1 260.555 1.094 546 2000 2 260.254 1.167 586 2000 3 260.277 1.320 626 2000 4 260.152 1.352 454