# File: insitu_global_H1211.txt # Date: 2023-08-29 # # Data use policy see https://gml.noaa.gov/hats/hats_datause.html # # Halon-1211 (H1211) hemispheric and global monthly means from the NOAA/GML # Chromatograph for Atmospheric Trace Species (CATS) 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. # # Citation: # G.S. Dutton and B.D. Hall (2023), # Global Atmospheric Halon-1211 Hemispheric and Global Mean Dry Air Mole Fractions from the # NOAA GML Halocarbons in situ Network, 1998-2023, Version: 2023-08-29, # https://doi.org/10.7289/V5X0659V # # For contact information see https://gml.noaa.gov/about/stafflist.html # # Calibration scale used: NOAA 2006 # More information about the calibration scale can be found at: https://gml.noaa.gov/ccl/ # # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # 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 (unc) reported is the estimate of insturmental precision. # The standard deviation (sd) reported is the estimate of insturmental precision and atmospheric variablity. # insitu_H1211_YYYY insitu_H1211_MM insitu_NH_H1211 insitu_NH_H1211_sd insitu_SH_H1211 insitu_SH_H1211_sd insitu_Global_H1211 insitu_Global_H1211_sd 1998 2 nan nan nan nan nan nan 1998 3 nan nan nan nan nan nan 1998 4 nan nan nan nan nan nan 1998 5 nan nan nan nan nan nan 1998 6 nan nan nan nan nan nan 1998 7 nan nan nan nan nan nan 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 4.057 0.018 nan nan nan nan 1999 1 4.039 0.017 nan nan nan nan 1999 2 4.061 0.017 nan nan nan nan 1999 3 4.080 0.023 3.835 0.026 3.958 0.035 1999 4 4.081 0.034 3.853 0.031 3.967 0.046 1999 5 4.076 0.023 3.867 0.031 3.971 0.039 1999 6 4.052 0.024 3.881 0.029 3.966 0.038 1999 7 4.019 0.022 3.872 0.024 3.946 0.033 1999 8 4.013 0.020 3.869 0.023 3.941 0.031 1999 9 4.040 0.022 3.867 0.025 3.954 0.033 1999 10 4.088 0.022 3.865 0.029 3.977 0.036 1999 11 4.106 0.026 3.874 0.027 3.990 0.038 1999 12 4.097 0.017 3.915 0.029 4.006 0.034 2000 1 4.067 0.026 3.943 0.027 4.005 0.037 2000 2 4.077 0.022 3.952 0.033 4.014 0.039 2000 3 4.105 0.023 3.951 0.030 4.028 0.038 2000 4 4.114 0.025 3.966 0.026 4.040 0.037 2000 5 4.122 0.027 3.960 0.031 4.041 0.042 2000 6 4.141 0.033 3.958 0.024 4.050 0.041 2000 7 4.153 0.008 3.981 0.026 4.067 0.028 2000 8 4.136 0.010 3.988 0.029 4.062 0.031 2000 9 4.168 0.007 3.993 0.031 4.081 0.032 2000 10 4.197 0.010 4.001 0.017 4.099 0.020 2000 11 4.202 0.017 4.019 0.018 4.110 0.025 2000 12 4.208 0.021 4.026 0.024 4.117 0.032 2001 1 4.221 0.015 4.043 0.021 4.132 0.026 2001 2 4.225 0.016 4.054 0.022 4.139 0.027 2001 3 4.226 0.014 4.062 0.025 4.144 0.029 2001 4 4.240 0.012 4.050 0.022 4.145 0.025 2001 5 4.222 0.042 4.059 0.014 4.140 0.044 2001 6 4.216 0.038 4.077 0.018 4.147 0.042 2001 7 4.217 0.032 4.083 0.021 4.150 0.038 2001 8 4.219 0.031 4.080 0.018 4.149 0.036 2001 9 4.240 0.024 4.086 0.017 4.163 0.029 2001 10 4.275 0.026 4.088 0.021 4.181 0.034 2001 11 4.306 0.057 4.085 0.023 4.196 0.061 2001 12 4.323 0.083 4.103 0.028 4.213 0.087 2002 1 4.344 0.114 4.117 0.025 4.230 0.117 2002 2 4.364 0.078 4.132 0.020 4.248 0.080 2002 3 4.358 0.091 4.122 0.019 4.240 0.093 2002 4 4.338 0.053 4.108 0.016 4.223 0.055 2002 5 4.360 0.040 4.103 0.016 4.232 0.043 2002 6 4.375 0.039 4.110 0.017 4.242 0.042 2002 7 4.364 0.033 4.123 0.017 4.244 0.037 2002 8 4.339 0.035 4.139 0.019 4.239 0.040 2002 9 4.356 0.036 4.155 0.016 4.256 0.039 2002 10 4.364 0.051 4.157 0.015 4.261 0.053 2002 11 4.360 0.044 4.151 0.015 4.256 0.046 2002 12 4.335 0.075 4.157 0.020 4.246 0.077 2003 1 4.337 0.043 4.155 0.021 4.246 0.048 2003 2 4.335 0.076 4.162 0.023 4.248 0.080 2003 3 4.364 0.036 4.166 0.017 4.265 0.040 2003 4 4.381 0.029 4.168 0.018 4.274 0.034 2003 5 4.406 0.030 4.158 0.014 4.282 0.033 2003 6 4.398 0.027 4.167 0.011 4.283 0.029 2003 7 4.371 0.025 4.174 0.016 4.273 0.029 2003 8 4.347 0.033 4.178 0.017 4.263 0.037 2003 9 4.365 0.032 4.187 0.017 4.276 0.036 2003 10 4.379 0.046 4.184 0.018 4.281 0.050 2003 11 4.368 0.044 4.193 0.018 4.280 0.048 2003 12 4.355 0.046 4.201 0.022 4.278 0.051 2004 1 4.366 0.044 4.204 0.026 4.285 0.051 2004 2 4.375 0.055 4.206 0.017 4.291 0.058 2004 3 4.399 0.044 4.210 0.020 4.305 0.048 2004 4 4.411 0.031 4.210 0.023 4.311 0.039 2004 5 4.416 0.036 4.211 0.019 4.314 0.041 2004 6 4.406 0.039 4.212 0.016 4.309 0.042 2004 7 4.394 0.015 4.214 0.015 4.304 0.021 2004 8 4.380 0.017 4.223 0.014 4.301 0.022 2004 9 4.381 0.028 4.224 0.016 4.303 0.032 2004 10 4.405 0.019 4.225 0.016 4.315 0.025 2004 11 4.420 0.023 4.225 0.019 4.323 0.030 2004 12 4.415 0.014 4.237 0.019 4.326 0.023 2005 1 4.400 0.016 4.232 0.019 4.316 0.025 2005 2 4.409 0.015 4.236 0.022 4.322 0.027 2005 3 4.431 0.018 4.238 0.021 4.334 0.028 2005 4 4.435 0.017 4.230 0.019 4.333 0.025 2005 5 4.434 0.016 4.215 0.017 4.324 0.023 2005 6 4.415 0.016 4.210 0.015 4.312 0.022 2005 7 4.393 0.013 4.221 0.017 4.307 0.021 2005 8 4.374 0.013 4.230 0.013 4.302 0.019 2005 9 4.383 0.018 4.239 0.015 4.311 0.023 2005 10 4.398 0.026 4.231 0.014 4.315 0.030 2005 11 4.417 0.023 4.230 0.016 4.323 0.028 2005 12 4.419 0.022 4.229 0.017 4.324 0.028 2006 1 4.407 0.015 4.250 0.021 4.329 0.026 2006 2 4.396 0.013 4.255 0.019 4.326 0.023 2006 3 4.395 0.021 4.234 0.018 4.315 0.027 2006 4 4.399 0.015 4.217 0.016 4.308 0.022 2006 5 4.397 0.015 4.223 0.019 4.310 0.024 2006 6 4.389 0.015 4.221 0.016 4.305 0.021 2006 7 4.374 0.028 4.221 0.015 4.298 0.031 2006 8 4.366 0.010 4.228 0.015 4.297 0.018 2006 9 4.367 0.010 4.230 0.013 4.298 0.016 2006 10 4.378 0.010 4.224 0.013 4.301 0.016 2006 11 4.385 0.010 4.220 0.013 4.303 0.017 2006 12 4.385 0.009 4.211 0.014 4.298 0.017 2007 1 4.380 0.010 4.213 0.016 4.296 0.019 2007 2 4.374 0.010 4.221 0.016 4.297 0.019 2007 3 4.372 0.010 4.222 0.014 4.297 0.018 2007 4 4.372 0.011 4.206 0.015 4.289 0.018 2007 5 4.371 0.010 4.196 0.016 4.284 0.019 2007 6 4.357 0.010 4.191 0.013 4.274 0.016 2007 7 4.353 0.011 4.194 0.013 4.273 0.017 2007 8 4.344 0.017 4.200 0.013 4.272 0.021 2007 9 4.342 0.014 4.201 0.013 4.272 0.019 2007 10 4.339 0.012 4.202 0.013 4.270 0.018 2007 11 4.350 0.014 4.196 0.015 4.273 0.020 2007 12 4.353 0.011 4.198 0.014 4.275 0.018 2008 1 4.353 0.011 4.190 0.017 4.272 0.020 2008 2 4.343 0.009 4.176 0.013 4.259 0.016 2008 3 4.335 0.010 4.155 0.013 4.245 0.016 2008 4 4.338 0.011 4.154 0.012 4.246 0.016 2008 5 4.340 0.018 4.155 0.014 4.247 0.023 2008 6 4.330 0.010 4.156 0.013 4.243 0.016 2008 7 4.312 0.017 4.154 0.012 4.233 0.021 2008 8 4.293 0.026 4.155 0.012 4.224 0.029 2008 9 4.292 0.046 4.152 0.012 4.222 0.048 2008 10 4.301 0.012 4.146 0.011 4.224 0.017 2008 11 4.305 0.010 4.148 0.012 4.226 0.015 2008 12 4.295 0.009 4.152 0.014 4.223 0.017 2009 1 4.285 0.010 4.151 0.013 4.218 0.017 2009 2 4.279 0.013 4.144 0.013 4.211 0.019 2009 3 4.273 0.012 4.134 0.013 4.203 0.018 2009 4 4.262 0.011 4.125 0.014 4.194 0.018 2009 5 4.253 0.011 4.117 0.013 4.185 0.017 2009 6 4.241 0.019 4.106 0.013 4.173 0.024 2009 7 4.227 0.010 4.101 0.011 4.164 0.015 2009 8 4.217 0.013 4.107 0.014 4.162 0.019 2009 9 4.214 0.017 4.108 0.015 4.161 0.022 2009 10 4.215 0.008 4.100 0.015 4.158 0.017 2009 11 4.218 0.008 4.091 0.016 4.154 0.018 2009 12 4.215 0.011 4.087 0.014 4.151 0.018 2010 1 4.213 0.039 4.077 0.017 4.145 0.042 2010 2 4.212 0.015 4.065 0.016 4.139 0.022 2010 3 4.206 0.011 4.059 0.014 4.133 0.018 2010 4 4.195 0.011 4.061 0.015 4.128 0.018 2010 5 4.183 0.014 4.053 0.008 4.118 0.016 2010 6 4.163 0.015 4.044 0.011 4.104 0.019 2010 7 4.139 0.015 4.045 0.014 4.092 0.021 2010 8 4.125 0.013 4.048 0.014 4.087 0.019 2010 9 4.127 0.011 4.046 0.016 4.087 0.020 2010 10 4.140 0.008 4.044 0.017 4.092 0.019 2010 11 4.140 0.007 4.039 0.018 4.090 0.020 2010 12 4.133 0.009 4.032 0.016 4.083 0.018 2011 1 4.128 0.008 4.023 0.019 4.075 0.021 2011 2 4.122 0.007 4.007 0.016 4.065 0.017 2011 3 4.116 0.009 3.987 0.017 4.051 0.019 2011 4 4.115 0.039 3.978 0.015 4.047 0.042 2011 5 4.112 0.008 3.978 0.017 4.045 0.019 2011 6 4.097 0.011 3.978 0.015 4.037 0.018 2011 7 4.076 0.011 3.974 0.018 4.025 0.021 2011 8 4.067 0.009 3.973 0.022 4.020 0.024 2011 9 4.070 0.008 3.970 0.024 4.020 0.025 2011 10 4.073 0.007 3.965 0.024 4.019 0.025 2011 11 4.072 0.006 3.957 0.023 4.015 0.024 2011 12 4.070 0.007 3.950 0.025 4.010 0.026 2012 1 4.062 0.008 3.940 0.027 4.001 0.028 2012 2 4.048 0.009 3.934 0.029 3.991 0.030 2012 3 4.042 0.009 3.924 0.030 3.983 0.032 2012 4 4.040 0.014 3.914 0.021 3.977 0.026 2012 5 4.030 0.011 3.903 0.018 3.966 0.022 2012 6 4.008 0.043 3.895 0.022 3.951 0.048 2012 7 3.991 0.009 3.882 0.021 3.936 0.023 2012 8 3.982 0.011 3.882 0.021 3.932 0.023 2012 9 3.978 0.029 3.880 0.027 3.929 0.040 2012 10 3.982 0.026 3.869 0.019 3.926 0.033 2012 11 3.981 0.011 3.850 0.019 3.916 0.022 2012 12 3.971 0.015 3.843 0.017 3.907 0.022 2013 1 3.961 0.009 3.837 0.020 3.899 0.022 2013 2 3.957 0.009 3.832 0.020 3.895 0.022 2013 3 3.945 0.042 3.821 0.017 3.883 0.046 2013 4 3.933 0.039 3.815 0.009 3.874 0.040 2013 5 3.919 0.012 3.811 0.018 3.865 0.022 2013 6 3.900 0.019 3.812 0.018 3.856 0.026 2013 7 3.883 0.038 3.811 0.015 3.847 0.041 2013 8 3.875 0.008 3.810 0.016 3.843 0.018 2013 9 3.869 0.013 3.800 0.017 3.834 0.022 2013 10 3.865 0.012 3.784 0.017 3.825 0.021 2013 11 3.866 0.009 3.775 0.016 3.820 0.018 2013 12 3.857 0.009 3.762 0.017 3.810 0.019 2014 1 3.845 0.009 3.750 0.017 3.798 0.020 2014 2 3.837 0.009 3.740 0.017 3.788 0.019 2014 3 3.834 0.009 3.727 0.017 3.781 0.019 2014 4 3.826 0.008 3.706 0.016 3.766 0.017 2014 5 3.814 0.008 3.699 0.016 3.756 0.018 2014 6 3.794 0.011 3.701 0.017 3.748 0.021 2014 7 3.776 0.010 3.702 0.015 3.739 0.018 2014 8 3.773 0.016 3.692 0.013 3.732 0.020 2014 9 3.780 0.012 3.687 0.013 3.734 0.017 2014 10 3.776 0.014 3.687 0.012 3.731 0.019 2014 11 3.770 0.009 3.675 0.011 3.722 0.015 2014 12 3.765 0.009 3.660 0.012 3.713 0.015 2015 1 3.758 0.011 3.653 0.014 3.706 0.018 2015 2 3.743 0.010 3.647 0.013 3.695 0.016 2015 3 3.734 0.010 3.636 0.013 3.685 0.016 2015 4 3.730 0.009 3.625 0.012 3.677 0.015 2015 5 3.719 0.016 3.617 0.012 3.668 0.020 2015 6 3.699 0.016 3.616 0.014 3.657 0.021 2015 7 3.681 0.015 3.615 0.014 3.648 0.021 2015 8 3.666 0.028 3.610 0.012 3.638 0.031 2015 9 3.655 0.012 3.600 0.013 3.627 0.017 2015 10 3.654 0.012 3.585 0.012 3.620 0.017 2015 11 3.656 0.014 3.567 0.012 3.612 0.019 2015 12 3.645 0.020 3.556 0.012 3.600 0.023 2016 1 3.630 0.017 3.541 0.011 3.586 0.021 2016 2 3.615 0.008 3.529 0.013 3.572 0.015 2016 3 3.603 0.009 3.518 0.013 3.560 0.016 2016 4 3.595 0.008 3.512 0.014 3.553 0.016 2016 5 3.585 0.006 3.501 0.012 3.543 0.014 2016 6 3.568 0.006 3.494 0.012 3.531 0.014 2016 7 3.550 0.006 3.491 0.012 3.520 0.014 2016 8 3.536 0.009 3.492 0.009 3.514 0.013 2016 9 3.527 0.008 3.487 0.012 3.507 0.014 2016 10 3.529 0.006 3.474 0.011 3.501 0.012 2016 11 3.527 0.009 3.462 0.011 3.495 0.014 2016 12 3.522 0.008 3.453 0.013 3.487 0.015 2017 1 3.512 0.006 3.446 0.014 3.479 0.015 2017 2 3.500 0.007 3.435 0.013 3.467 0.015 2017 3 3.491 0.006 3.423 0.012 3.457 0.014 2017 4 3.486 0.007 3.409 0.013 3.448 0.015 2017 5 3.477 0.005 3.403 0.012 3.440 0.013 2017 6 3.464 0.006 3.401 0.012 3.432 0.013 2017 7 3.450 0.009 3.399 0.010 3.425 0.013 2017 8 3.441 0.006 3.395 0.012 3.418 0.013 2017 9 3.433 0.005 3.388 0.011 3.410 0.012 2017 10 3.432 0.005 3.385 0.010 3.408 0.012 2017 11 3.427 0.005 3.375 0.011 3.401 0.012 2017 12 3.422 0.004 3.359 0.009 3.391 0.010 2018 1 3.413 0.005 3.339 0.009 3.376 0.010 2018 2 3.406 0.005 3.327 0.015 3.366 0.016 2018 3 3.399 0.007 3.320 0.018 3.359 0.019 2018 4 3.394 0.005 3.314 0.014 3.354 0.015 2018 5 3.383 0.006 3.307 0.014 3.345 0.015 2018 6 3.370 0.009 3.308 0.014 3.339 0.017 2018 7 3.353 0.004 3.309 0.014 3.331 0.015 2018 8 3.337 0.005 3.303 0.013 3.320 0.014 2018 9 3.331 0.004 3.296 0.013 3.313 0.013 2018 10 3.339 0.004 3.288 0.012 3.314 0.013 2018 11 3.342 0.005 3.281 0.012 3.312 0.013 2018 12 3.335 0.005 3.268 0.012 3.302 0.013 2019 1 3.321 0.008 3.250 0.010 3.285 0.012 2019 2 3.310 0.007 3.230 0.011 3.270 0.013 2019 3 3.303 0.007 3.215 0.020 3.259 0.021 2019 4 3.299 0.005 3.203 0.015 3.251 0.015 2019 5 3.283 0.005 3.195 0.016 3.239 0.017 2019 6 3.260 0.007 3.190 0.015 3.225 0.017 2019 7 3.241 0.006 3.187 0.015 3.214 0.016 2019 8 3.233 0.006 3.184 0.015 3.208 0.016 2019 9 3.225 0.006 3.179 0.013 3.202 0.014 2019 10 3.228 0.006 3.170 0.010 3.199 0.012 2019 11 3.230 0.007 3.160 0.013 3.195 0.014 2019 12 3.223 0.008 3.150 0.011 3.186 0.014 2020 1 3.208 0.008 3.141 0.011 3.175 0.014 2020 2 3.199 0.008 3.131 0.011 3.165 0.013 2020 3 3.192 0.008 3.116 0.010 3.154 0.012 2020 4 3.179 0.007 3.102 0.010 3.141 0.013 2020 5 3.164 0.009 3.094 0.010 3.129 0.013 2020 6 3.149 0.007 3.090 0.011 3.119 0.013 2020 7 3.139 0.006 3.085 0.013 3.112 0.014 2020 8 3.130 0.006 3.087 0.014 3.109 0.015 2020 9 3.129 0.006 3.090 0.017 3.109 0.018 2020 10 3.127 0.006 3.075 0.017 3.101 0.018 2020 11 3.120 0.007 3.056 0.019 3.088 0.020 2020 12 3.117 0.008 3.049 0.011 3.083 0.014 2021 1 3.114 0.012 3.044 0.011 3.079 0.016 2021 2 3.104 0.006 3.030 0.012 3.067 0.014 2021 3 3.093 0.008 3.014 0.012 3.053 0.015 2021 4 3.090 0.009 2.997 0.013 3.044 0.016 2021 5 3.082 0.008 2.983 0.013 3.032 0.016 2021 6 3.064 0.009 2.977 0.014 3.021 0.017 2021 7 3.051 0.011 2.974 0.014 3.012 0.018 2021 8 3.044 0.012 2.974 0.015 3.009 0.019 2021 9 3.040 0.014 2.973 0.016 3.006 0.021 2021 10 3.028 0.015 2.967 0.015 2.998 0.021 2021 11 3.022 0.018 2.955 0.016 2.989 0.024 2021 12 3.022 0.005 2.945 0.016 2.984 0.017 2022 1 3.023 0.004 2.937 0.017 2.980 0.018 2022 2 3.009 0.005 2.922 0.012 2.966 0.013 2022 3 2.996 0.007 2.908 0.012 2.952 0.014 2022 4 2.980 0.006 2.905 0.022 2.943 0.022 2022 5 2.967 0.006 2.875 0.023 2.921 0.023 2022 6 2.950 0.005 2.861 0.022 2.905 0.023 2022 7 2.935 0.007 nan nan nan nan 2022 8 2.920 0.006 nan nan nan nan 2022 9 2.923 0.009 nan nan nan nan 2022 10 2.926 0.008 nan nan nan nan 2022 11 2.936 0.018 nan nan nan nan 2022 12 2.949 0.007 nan nan nan nan 2023 1 2.946 0.058 nan nan nan nan 2023 2 2.930 0.006 nan nan nan nan 2023 3 2.931 0.006 nan nan nan nan 2023 4 nan nan nan nan nan nan 2023 5 nan nan nan nan nan nan 2023 6 nan nan nan nan nan nan 2023 7 nan nan nan nan nan nan 2023 8 nan nan nan nan nan nan 2023 9 nan nan nan nan nan nan 2023 10 nan nan nan nan nan nan 2023 11 nan nan nan nan nan nan 2023 12 nan nan nan nan nan nan