# file: insitu_global_CH3Cl.txt # date: Wed, Sep 26, 2018 3:03:22 PM # # (CH3Cl) hemispheric and global monthly means from the NOAA/ESRL # Chromatograph for Atmospheric Trace Species data from baseline observatories (Barrow, Alaska; # Summit, Greenland; Niwot Ridge, Colorado; Mauna Loa, Hawaii; American Samoa; South Pole). # This work was funded in part by the Atmospheric Chemistry Project of NOAA's Climate and # Global Change Program. # # (PIs) Geoffrey S. Dutton, Dr. James W. Elkins, Dr. Bradley D. Hall # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GMD1 # Boulder, CO 80305-3328 # # Email: Geoff.Dutton@noaa.gov; James.W.Elkins@noaa.gov; Bradley.Hall@noaa.gov # Phone: (303) 497-6086 (303) 497-6224 (303) 497-7011 # Fax: (303) 497-6290 # # 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. Recent data (less # than 1.5 years) are considered preliminary. Please contact the PIs for more information. # # The data should be cited in presentations or publications as the flowing: data from # the NOAA/ESRL halocarbons in situ program. # # DOI: http://doi.org/10.7289/V5X0659V # # Calibration scale used: NOAA 2003 # # More information about the calibration scale can be found at: # http://www.esrl.noaa.gov/gmd/ccl/index.html # # The CATS GCs sample air once an hour. Global monthly data are provided in parts-per-trillion, ppt. # Abbreviations used: # yr=year, mon=month, m=monthly data; gc=type of sample--in situ GC data, sd=standard deviation of samples, # n=number of samples, brw=Pt. Barrow, Alaska, sum=Summit, Greenland, nwr= Niwot Ridge, Colorado # mlo=Mauna Loa, Hawaii, smo = American Samoa, spo=South Pole, Antarctica # NAN=not a number or no data, and space(s) is the delimiter. # # # The standard deviation (sd) reported is the estimate of insturmental precision. # insitu_CH3Cl_YYYY insitu_CH3Cl_MM insitu_NH_CH3Cl insitu_NH_CH3Cl_sd insitu_SH_CH3Cl insitu_SH_CH3Cl_sd insitu_Global_CH3Cl insitu_Global_CH3Cl_sd 1998 8 nan nan nan nan nan nan 1998 9 nan nan nan nan nan nan 1998 10 nan nan nan nan nan nan 1998 11 nan nan nan nan nan nan 1998 12 nan nan nan nan nan nan 1999 1 nan nan nan nan nan nan 1999 2 nan nan nan nan nan nan 1999 3 nan nan nan nan nan nan 1999 4 600.847 0.838 nan nan nan nan 1999 5 588.876 1.176 nan nan nan nan 1999 6 580.145 1.157 nan nan nan nan 1999 7 557.622 1.166 576.264 1.077 566.943 1.588 1999 8 539.930 1.805 578.470 1.134 559.200 2.132 1999 9 537.461 2.067 576.068 2.056 556.764 2.916 1999 10 547.781 8.853 569.757 5.173 558.769 10.254 1999 11 557.642 0.973 564.496 5.676 561.069 5.759 1999 12 561.368 0.872 558.789 3.922 560.079 4.018 2000 1 566.221 0.695 549.001 2.812 557.611 2.897 2000 2 573.055 0.862 547.198 2.015 560.127 2.192 2000 3 578.612 1.039 551.120 2.433 564.866 2.645 2000 4 574.086 2.098 558.884 2.676 566.485 3.400 2000 5 565.935 3.491 563.812 2.120 564.874 4.084 2000 6 552.574 3.745 570.090 2.120 561.332 4.303 2000 7 539.004 2.401 571.176 1.849 555.090 3.031 2000 8 528.092 3.747 568.320 1.072 548.206 3.897 2000 9 529.765 0.854 562.102 0.547 545.933 1.014 2000 10 534.068 1.219 555.808 1.123 544.938 1.657 2000 11 544.079 1.028 549.047 1.459 546.563 1.785 2000 12 523.781 2.949 540.953 1.324 532.367 3.233 2001 1 551.501 2.377 535.316 1.056 543.408 2.601 2001 2 560.831 2.749 537.092 1.554 548.961 3.157 2001 3 561.659 2.500 540.040 3.346 550.850 4.176 2001 4 563.442 2.397 542.063 2.096 552.752 3.184 2001 5 557.642 3.140 546.492 1.708 552.067 3.574 2001 6 552.547 2.734 554.637 1.132 553.592 2.959 2001 7 537.717 2.463 556.834 0.921 547.276 2.630 2001 8 525.396 5.305 554.633 3.148 540.015 6.168 2001 9 521.926 3.706 552.067 3.988 536.996 5.444 2001 10 532.174 3.834 548.179 4.580 540.177 5.973 2001 11 545.359 5.145 539.911 1.333 542.635 5.314 2001 12 554.950 4.856 533.188 3.157 544.069 5.792 2002 1 562.916 6.383 529.410 3.352 546.163 7.209 2002 2 568.373 1.677 527.754 2.028 548.064 2.631 2002 3 575.662 1.653 526.340 2.109 551.001 2.680 2002 4 576.840 5.681 532.459 2.209 554.650 6.096 2002 5 569.888 5.852 544.454 1.094 557.171 5.954 2002 6 nan nan 558.366 0.984 nan 5.799 2002 7 nan nan 562.175 0.417 nan 6.104 2002 8 nan nan 559.791 0.772 nan 7.449 2002 9 nan nan 557.099 1.742 nan 9.470 2002 10 nan nan 555.401 1.982 nan 6.520 2002 11 nan nan 548.593 1.720 nan 8.046 2002 12 nan nan 537.330 1.487 nan 10.390 2003 1 563.946 6.017 531.572 1.534 547.759 6.210 2003 2 576.709 8.002 535.032 0.988 555.871 8.063 2003 3 583.571 7.161 537.237 0.814 560.404 7.207 2003 4 588.219 5.840 536.511 1.234 562.365 5.969 2003 5 581.808 5.562 536.874 1.455 559.341 5.750 2003 6 568.196 2.569 544.734 1.744 556.465 3.105 2003 7 545.931 2.927 555.338 0.702 550.634 3.010 2003 8 534.327 2.571 559.759 1.379 547.043 2.917 2003 9 533.548 3.741 556.160 2.232 544.854 4.356 2003 10 538.515 3.718 553.422 0.951 545.968 3.837 2003 11 549.473 3.439 545.931 1.365 547.702 3.700 2003 12 563.985 1.950 535.222 3.754 549.604 4.230 2004 1 572.045 1.942 533.399 0.536 552.722 2.015 2004 2 575.170 1.700 531.424 2.361 553.297 2.909 2004 3 578.206 2.070 528.718 4.845 553.462 5.269 2004 4 581.925 3.045 532.851 2.900 557.388 4.205 2004 5 573.206 3.988 540.184 0.893 556.695 4.087 2004 6 558.655 4.008 544.839 2.083 551.747 4.517 2004 7 545.450 3.318 548.579 2.635 547.014 4.237 2004 8 537.093 2.154 549.102 1.708 543.097 2.749 2004 9 530.875 1.374 549.613 1.137 540.244 1.784 2004 10 534.862 1.589 547.773 2.744 541.318 3.171 2004 11 544.238 1.439 538.732 2.770 541.485 3.122 2004 12 557.007 2.048 531.831 2.064 544.419 2.908 2005 1 570.125 1.950 536.223 2.046 553.174 2.827 2005 2 577.686 1.335 538.638 4.526 558.162 4.718 2005 3 579.755 1.447 538.945 4.190 559.350 4.432 2005 4 582.883 1.453 541.803 7.224 562.343 7.369 2005 5 566.663 2.723 553.876 6.072 560.269 6.655 2005 6 549.552 8.033 558.888 6.534 554.220 10.355 2005 7 530.426 8.922 557.516 7.430 543.971 11.610 2005 8 509.357 4.352 554.163 8.043 531.760 9.145 2005 9 493.066 2.965 555.551 7.335 524.309 7.911 2005 10 514.041 4.104 553.305 7.048 533.673 8.156 2005 11 540.630 6.500 547.642 8.112 544.136 10.395 2005 12 558.357 6.872 540.447 8.332 549.402 10.800 2006 1 564.791 5.882 540.662 7.097 552.726 9.218 2006 2 573.653 3.991 540.089 7.117 556.871 8.160 2006 3 583.594 4.596 535.362 2.659 559.478 5.310 2006 4 581.494 3.760 536.077 1.722 558.785 4.135 2006 5 566.708 3.318 548.620 0.928 557.664 3.446 2006 6 548.635 1.025 556.029 1.218 552.332 1.592 2006 7 535.103 0.751 555.993 1.709 545.548 1.867 2006 8 518.905 0.573 552.009 1.469 535.457 1.577 2006 9 517.384 1.996 548.191 1.635 532.787 2.580 2006 10 532.373 2.316 539.200 1.780 535.786 2.921 2006 11 553.594 2.210 534.744 2.995 544.169 3.722 2006 12 562.984 3.171 528.764 4.023 545.874 5.122 2007 1 575.464 5.227 529.454 5.957 552.459 7.925 2007 2 587.660 5.207 533.719 2.272 560.690 5.681 2007 3 601.265 4.292 535.886 1.620 568.575 4.588 2007 4 604.421 1.752 536.640 3.922 570.531 4.295 2007 5 590.050 2.256 547.861 1.658 568.956 2.800 2007 6 567.805 9.848 555.961 2.208 561.883 10.093 2007 7 546.073 7.995 553.025 0.966 549.549 8.054 2007 8 525.230 4.821 549.808 0.938 537.519 4.912 2007 9 517.659 2.925 547.855 0.933 532.757 3.070 2007 10 535.869 4.194 544.236 0.982 540.052 4.307 2007 11 550.511 2.057 539.618 6.292 545.064 6.620 2007 12 555.102 1.715 534.204 5.683 544.653 5.936 2008 1 566.060 1.936 524.843 2.743 545.452 3.358 2008 2 581.417 7.946 516.894 2.073 549.156 8.211 2008 3 591.412 8.548 516.406 0.818 553.909 8.587 2008 4 588.698 8.292 524.101 0.763 556.400 8.327 2008 5 582.849 9.380 533.625 0.515 558.237 9.394 2008 6 577.193 1.219 541.510 0.475 559.352 1.308 2008 7 565.012 2.084 543.097 0.534 554.055 2.152 2008 8 545.921 2.024 539.312 0.531 542.616 2.092 2008 9 537.255 0.777 533.330 0.567 535.292 0.962 2008 10 539.354 1.259 527.413 0.652 533.384 1.418 2008 11 534.348 3.605 518.854 0.723 526.601 3.677 2008 12 544.869 8.713 511.708 0.802 528.288 8.750 2009 1 568.341 8.695 508.321 1.298 538.331 8.791 2009 2 586.149 4.030 515.250 2.522 550.700 4.754 2009 3 594.059 2.165 522.300 3.597 558.180 4.198 2009 4 600.805 1.579 531.501 3.419 566.153 3.766 2009 5 594.918 1.444 541.048 1.463 567.983 2.055 2009 6 577.736 1.677 547.544 0.582 562.640 1.775 2009 7 555.845 3.002 544.953 7.418 550.399 8.003 2009 8 542.629 2.955 537.210 6.699 539.920 7.322 2009 9 532.223 4.527 549.207 7.126 540.715 8.442 2009 10 531.124 6.168 561.851 10.208 546.487 11.927 2009 11 539.804 5.427 557.804 4.984 548.804 7.368 2009 12 554.900 3.335 549.395 4.699 552.147 5.762 2010 1 565.993 1.652 547.291 6.802 556.642 7.000 2010 2 574.965 2.520 540.887 6.991 557.926 7.431 2010 3 576.641 1.912 531.947 5.555 554.294 5.875 2010 4 575.540 1.702 534.181 8.512 554.860 8.680 2010 5 567.853 2.054 545.419 11.638 556.636 11.818 2010 6 558.301 2.564 574.366 6.396 566.334 6.891 2010 7 547.532 2.827 565.752 10.524 556.642 10.897 2010 8 540.289 3.597 545.059 15.000 542.674 15.425 2010 9 539.796 2.847 538.949 9.999 539.373 10.396 2010 10 548.075 0.972 552.661 5.602 550.368 5.686 2010 11 553.787 1.007 556.744 4.113 555.266 4.234 2010 12 559.276 1.543 553.951 4.884 556.614 5.122 2011 1 566.358 0.792 541.271 7.750 553.815 7.791 2011 2 571.669 0.703 536.956 11.380 554.312 11.402 2011 3 577.540 2.254 542.688 11.337 560.114 11.559 2011 4 573.727 5.583 544.140 10.735 558.933 12.100 2011 5 571.867 7.780 552.351 11.400 562.109 13.802 2011 6 578.922 5.907 559.965 12.766 569.443 14.066 2011 7 580.465 1.082 557.946 10.639 569.206 10.694 2011 8 566.584 1.014 553.053 10.996 559.818 11.043 2011 9 564.161 1.344 547.749 10.772 555.955 10.855 2011 10 575.751 1.199 545.024 3.635 560.387 3.828 2011 11 572.638 4.110 541.515 3.106 557.077 5.152 2011 12 566.898 6.574 535.772 2.505 551.335 7.035 2012 1 569.554 4.287 526.885 3.333 548.219 5.430 2012 2 579.198 2.277 534.311 3.983 556.755 4.588 2012 3 584.511 1.196 545.671 8.712 565.091 8.794 2012 4 589.078 1.225 552.645 11.374 570.861 11.440 2012 5 582.182 1.438 560.743 11.960 571.463 12.047 2012 6 561.516 1.035 571.076 12.385 566.296 12.428 2012 7 540.078 1.468 569.945 10.717 555.011 10.818 2012 8 526.672 2.477 564.722 7.834 545.697 8.216 2012 9 522.353 2.404 562.887 7.180 542.620 7.572 2012 10 536.887 5.263 560.189 7.233 548.538 8.945 2012 11 554.554 7.549 554.602 7.523 554.578 10.658 2012 12 567.954 6.450 555.708 6.676 561.831 9.283 2013 1 571.610 3.964 557.707 3.974 564.659 5.613 2013 2 575.096 1.474 566.306 6.552 570.701 6.716 2013 3 572.785 1.630 566.211 8.572 569.498 8.726 2013 4 574.295 1.109 565.650 9.544 569.973 9.608 2013 5 568.161 1.050 573.319 2.899 570.740 3.083 2013 6 553.471 1.418 588.820 2.072 571.146 2.511 2013 7 543.502 1.533 580.492 3.825 561.997 4.121 2013 8 541.595 1.399 567.456 5.676 554.526 5.846 2013 9 543.754 1.088 563.646 3.764 553.700 3.918 2013 10 548.405 1.156 563.477 0.890 555.941 1.459 2013 11 554.960 0.938 556.621 0.396 555.791 1.018 2013 12 570.994 6.045 549.955 0.429 560.475 6.060 2014 1 562.485 13.043 545.654 9.312 554.070 16.026 2014 2 544.155 14.004 547.431 9.764 545.793 17.072 2014 3 535.409 7.665 550.221 11.995 542.815 14.235 2014 4 544.091 2.364 551.865 11.064 547.978 11.314 2014 5 544.253 3.531 560.538 9.886 552.395 10.498 2014 6 551.107 2.640 568.876 8.174 559.992 8.590 2014 7 541.755 2.466 564.809 12.276 553.282 12.521 2014 8 521.020 2.982 555.434 13.734 538.227 14.054 2014 9 511.450 1.539 550.192 13.853 530.821 13.939 2014 10 519.163 2.078 545.105 15.521 532.134 15.660 2014 11 533.663 3.007 540.521 16.527 537.092 16.798 2014 12 546.336 2.327 536.753 15.084 541.544 15.263 2015 1 547.587 0.739 532.595 8.754 540.091 8.785 2015 2 545.862 1.484 531.965 10.316 538.913 10.422 2015 3 548.913 2.079 534.846 13.800 541.880 13.955 2015 4 552.750 2.544 538.209 13.141 545.479 13.384 2015 5 537.529 4.614 546.200 10.256 541.864 11.246 2015 6 513.014 5.098 550.117 10.327 531.565 11.517 2015 7 492.719 3.327 547.571 9.636 520.145 10.194 2015 8 484.148 1.811 541.949 9.654 513.049 9.823 2015 9 481.440 0.950 535.795 9.132 508.618 9.181 2015 10 493.142 0.586 525.897 9.097 509.519 9.116 2015 11 508.320 1.546 518.658 9.029 513.489 9.160 2015 12 524.600 2.695 517.839 9.234 521.220 9.619 2016 1 539.841 2.332 510.467 7.964 525.154 8.298 2016 2 549.887 0.592 508.004 9.246 528.945 9.265 2016 3 556.382 0.973 507.746 7.968 532.064 8.027 2016 4 561.229 1.109 513.224 7.277 537.226 7.361 2016 5 550.394 0.647 513.102 6.497 531.748 6.529 2016 6 526.762 1.144 524.403 5.299 525.583 5.421 2016 7 505.833 0.937 528.222 5.776 517.027 5.851 2016 8 494.374 0.662 527.910 3.877 511.142 3.933 2016 9 492.750 1.006 519.886 3.826 506.318 3.956 2016 10 503.887 2.328 518.211 3.556 511.049 4.250 2016 11 510.718 4.492 509.352 4.162 510.035 6.124 2016 12 516.786 5.175 503.670 4.021 510.228 6.553 2017 1 523.086 6.355 501.073 2.076 512.080 6.685 2017 2 530.754 2.691 499.957 1.036 515.355 2.884 2017 3 533.796 2.140 502.300 4.411 518.048 4.902 2017 4 534.818 2.119 511.321 4.625 523.069 5.087 2017 5 528.979 2.358 524.030 5.192 526.505 5.703 2017 6 516.414 1.078 526.820 1.356 521.617 1.732 2017 7 497.058 0.614 508.849 0.623 502.953 0.874 2017 8 477.360 1.188 509.672 0.557 493.516 1.312 2017 9 471.175 0.468 500.133 0.495 485.654 0.681 2017 10 475.560 0.425 nan nan nan nan 2017 11 481.591 0.424 nan nan nan nan 2017 12 493.760 0.447 nan nan nan nan 2018 1 501.383 0.413 nan nan nan nan 2018 2 nan nan nan nan nan nan 2018 3 nan nan nan nan nan nan 2018 4 nan nan nan nan nan nan 2018 5 nan nan nan nan nan nan 2018 6 nan nan nan nan nan nan 2018 7 nan nan nan nan nan nan 2018 8 nan nan nan nan nan nan 2018 9 nan nan nan nan nan nan 2018 10 nan nan nan nan nan nan 2018 11 nan nan nan nan nan nan 2018 12 nan nan nan nan nan nan